JP7770752B2 - Chart System - Google Patents

Description

The present invention relates to a chart system that displays the prices of financial products, such as stock prices.

Chart systems are used to buy and sell financial products such as securities. Chart systems display time-series changes in the price (opening price, closing price (current price), lowest price, highest price) of the target financial product on a chart (diagram), helping investors make decisions about buying and selling financial products. An example of a financial product is a security (stock) traded on a stock exchange such as the Tokyo Stock Exchange, in which case the chart system displays time-series changes in the stock price. Charts displayed by chart systems include candlestick charts, which represent the four values (opening price, closing price (current price), highest price, lowest price) using the body and wicks of a candle, and line charts, which represent the four values using a vertical bar with left and right protrusions.

In addition to the four-digit values, the chart system can also display technical indicators calculated from past four-digit values. Technical indicators include moving averages, Bollinger bands, RSI (Relative Strength Index), stochastics, etc.

Furthermore, chart systems may not only display four-digit prices and technical indicators, but also have the ability to issue buy and sell instructions for financial instruments. The chart system is connected via an internet line to a server of a financial institution that mediates the buying and selling of financial instruments, and can send buy and sell instruction messages to that server. For example, the chart system accepts buy and sell instructions from a user on a chart and sends messages to the server to buy or sell the financial instrument corresponding to the displayed chart.

In this way, the chart system can visually and instantly convey the four price levels and technical indicators of financial products to investors, supporting their trading decisions and supporting the instantaneous execution of trading of financial products based on their trading decisions. An example of a chart system is described in Patent Document 1.
JP 2015-156188 A

While chart systems are useful for instantly providing visual information on four-digit prices and technical indicators that aid in financial product trading decisions and for issuing buy and sell orders instantly, there is still room for improvement. For example, there are systems known as price limits and circuit breakers, which temporarily or for the duration of a day restrict trading when prices fluctuate significantly beyond a specified price range. However, the price ranges associated with these trading restrictions are not reflected on the charts. Furthermore, charts include multiple charts with different time scales, such as daily charts showing daily price changes, weekly charts showing weekly price changes, 30-minute charts showing 30-minute price changes, and 5-minute charts showing 5-minute price changes. However, comparing these charts requires switching the display and redisplaying the charts. Furthermore, when issuing buy and sell orders for financial products, users must specify the desired buy/sell price (limit order or market order) and the lot size (e.g., the number of shares for stocks). However, users must calculate the price and lot size based on their own trading budget, making it difficult to issue buy and sell orders quickly.

The present invention aims to provide a chart system that can more visually and instantly support investors in making trading decisions and executing trades.

One aspect of the present invention provides a chart system that visually displays price fluctuations over time for a selected financial instrument, and draws a chart for the financial instrument using multiple candlesticks in a first time unit, and draws auxiliary information related to one of the multiple candlesticks in the first time unit on the chart, in association with that candlestick. The auxiliary information includes quote information indicating the quote price of the financial instrument before the opening of the market on that day, and the chart system may draw the quote information in association with one of the multiple candlesticks in the first time unit that indicates the closing price of the previous day. The auxiliary information may include first gap information indicating the difference between the previous day's closing price and the current day's bid price before the current day's opening of the financial product, and second gap information indicating the difference between the previous day's closing price and the current day's opening price after the current day's opening of the financial product, and the chart system may plot the first gap information in association with a candlestick indicating the previous day's closing price among the plurality of candlesticks of the first hour unit before the current day's opening of the financial product, and plot the second gap information in association with a current day's candlestick among the plurality of candlesticks of the first hour unit after the current day's opening of the financial product. The auxiliary information may include average gap information indicating an average gap value which is an average value of gaps indicating the difference between the previous day's closing price and the next day's opening price over a predetermined period, and the chart system may plot the average gap information in association with a candlestick indicating the previous day's closing price among the plurality of candlesticks of the first hour unit before the current day's opening of the financial product, and plot the average gap information in association with a current day's candlestick among the plurality of candlesticks of the first hour unit after the current day's opening of the financial product. The auxiliary information may include an average gap value, which is the average value of each gap indicating the difference between the closing price of the previous day and the opening price of the next day over a predetermined period, and deviation rate information, which indicates the deviation rate between the gap indicated by the difference between the closing price of the previous day and the opening price of the next day before the opening of the day of the financial product, and the gap indicated by the difference between the closing price of the previous day and the opening price of the current day of the financial product, before the opening of the day of the financial product, the chart system may draw the deviation rate information in association with a candlestick indicating the closing price of the previous day among the plurality of candlesticks of the first time unit. The auxiliary information may include an average gap value, which is the average value of each gap indicating the difference between the closing price of the previous day and the opening price of the next day over a predetermined period, and deviation rate information, which indicates the deviation rate between the gap indicated by the difference between the closing price of the previous day and the opening price of the current day of the financial product after the opening of the day of the financial product, and the chart system may draw the deviation rate information in association with a candlestick of the current day among the plurality of candlesticks of the first time unit. The deviation rate information may be quotations price information showing the current day's quote price in a display format that varies depending on the deviation rate. The auxiliary information may include price range information indicating the current day's price limit range determined based on the previous day's closing price of the financial product. Before the current day's opening of the financial product, the chart system may draw the price range information in association with a candlestick showing the previous day's closing price among the multiple candlesticks of the first time unit, and after the current day's opening of the financial product, the chart system may draw the price range information in association with a current day's candlestick among the multiple candlesticks of the first time unit. The auxiliary information may be PTS price information showing the PTS price of the financial product. The chart system may accept a user selection operation to select an arbitrary candlestick from the multiple candlesticks of the first time unit, and the auxiliary information may include multiple candlesticks of a second time unit shorter than the first time unit that correspond to the candlestick of the first time unit selected by the user selection operation. The chart system may draw the auxiliary information in association with the candlestick selected in response to the user selection operation.

Another aspect of the present invention provides a chart system that visually displays the price fluctuations over time of a selected financial instrument, which draws a chart for the financial instrument using multiple candlesticks in a first time unit, and accepts a user instruction on the chart to place a buy order for the financial instrument, the user instruction including a desired purchase price for the financial instrument, and in response to the user instruction, automatically generates a market buy order to purchase the financial instrument based on the desired purchase price and the daily price limit for the financial instrument. Alternatively, a chart system that visually displays the price fluctuations over time of a selected financial instrument, which draws a chart for the financial instrument using multiple candlesticks in a first time unit, and accepts a user instruction on the chart to place a buy order for the financial instrument, the user instruction including a limit price and a desired purchase price for the financial instrument, and in response to the user instruction, automatically generates a limit buy order to purchase the financial instrument based on the limit price and the desired purchase price. Alternatively, a chart system that visually displays price fluctuations over time for a selected financial product draws a chart for the financial product using multiple candlesticks in a first time unit, and accepts a user instruction to place a buy order for the financial product on the chart, the user instruction including an instruction indicating a deviation from the upper limit of the price range limit for the day for the financial product, and automatically determines a limit price based on the deviation in response to the user instruction and generates a limit order to purchase the financial product.

This invention provides a chart system that can more visually and instantly support investors' buying and selling decisions.

FIG. 1 shows an example of a system including a chart system 100 according to an embodiment of the present invention. FIG. 2 shows an example of a GUI in which the chart system 100 according to the embodiment of the present invention includes a drawing chart. FIG. 3 shows an example in which quote information and gap information are displayed on a daily chart in the chart system 100 according to an embodiment of the present invention. FIG. 4 shows an example in which market indication information and gap information are displayed on a weekly chart in the chart system 100 according to an embodiment of the present invention. FIG. 5 shows the display transition after the opening of a daily chart in the chart system 100 according to an embodiment of the present invention. FIG. 6 shows the display transition after the opening of a weekly chart in the chart system 100 according to an embodiment of the present invention. FIG. 7 shows an example in which average gap information is displayed on a daily chart before the opening price in the chart system 100 according to an embodiment of the present invention. FIG. 8 shows an example of plotting average gap information together with quote information in the chart system 100 according to the embodiment of the present invention. FIG. 9 shows an example in which average gap information is displayed on a daily chart after the opening price in the chart system 100 according to an embodiment of the present invention. FIG. 10 shows an example of plotting average gap information superimposed on the plot of the candlesticks of the day in the chart system 100 according to the embodiment of the present invention. FIG. 11 shows an example of setting information for setting different colors according to a plurality of deviation rates in the chart system 100 according to the embodiment of the present invention. FIG. 12 shows an example of displaying deviation rate information as numerical values in the chart system 100 according to the embodiment of the present invention. FIG. 13 shows an example of displaying deviation rate information as numerical values in the chart system 100 according to the embodiment of the present invention. FIG. 14 shows an example of price range information held in the chart system 100 according to an embodiment of the present invention. FIG. 15 shows an example in which trading restriction information is displayed on a daily chart in the chart system 100 according to an embodiment of the present invention. FIG. 16 shows an example in which trading restriction information is displayed on a daily chart after the opening price in the chart system 100 according to an embodiment of the present invention. FIG. 17 shows an example in which trading restriction information is displayed on a weekly chart in the chart system 100 according to an embodiment of the present invention. FIG. 18 shows an example in which quote information, gap information, and trading limit information are superimposed and displayed on a daily chart in the chart system 100 according to an embodiment of the present invention. FIG. 19 shows a weekly chart with a chart-in-chart display function in the chart system 100 according to an embodiment of the present invention. FIG. 20 shows an example of drawing a corresponding daily chart superimposed on a weekly candlestick using the chart-in-chart display function in the chart system 100 according to an embodiment of the present invention. FIG. 21 shows an example of drawing a corresponding daily chart within a weekly candlestick using the chart-in-chart display function in the chart system 100 according to an embodiment of the present invention. FIG. 22 shows an example of drawing a daily chart corresponding to the vicinity of a weekly candlestick using the chart-in-chart display function in the chart system 100 according to an embodiment of the present invention. FIG. 23 shows an example of displaying a buy order UI in the chart system 100 according to an embodiment of the present invention. FIG. 24 shows an example of displaying a limit order UI in the chart system 100 according to an embodiment of the present invention. FIG. 25 shows an example of displaying a market order UI in the chart system 100 according to an embodiment of the present invention. FIG. 26 shows an example of displaying a limit order UI in the chart system 100 according to an embodiment of the present invention. FIG. 27 shows an example of a comparison between trading hours at the exchange 30 and trading hours at the PTS. FIG. 28 shows an example in which PTS information is displayed as candlesticks on a daily chart before the opening in the chart system 100 according to an embodiment of the present invention. FIG. 29 shows an example in which PTS information is displayed as a bar on a daily chart before the opening in the chart system 100 according to an embodiment of the present invention. FIG. 30 shows an example in which PTS information is displayed as candlesticks on a daily chart after the opening in the chart system 100 according to an embodiment of the present invention. FIG. 31 shows an example in which PTS information is displayed as bars on a daily chart after the opening in the chart system 100 according to an embodiment of the present invention. FIG. 32 shows an example in which, before the opening of a market, all of the bid/ask information, gap information, average gap information, deviation rate information, trading limit information, and PTS price information are simultaneously displayed in the chart system 100 according to an embodiment of the present invention. FIG. 33 shows an example in which, in the chart system 100 according to an embodiment of the present invention, all of the bid/ask information, gap information, average gap information, deviation rate information, trading limit information, and PTS price information are simultaneously displayed during the intraday session after the opening of the market. FIG. 34 is a block diagram showing the configuration of a computer that realizes the chart system in the chart system 100 according to an embodiment of the present invention.

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a diagram of a system including a chart system 100 according to an embodiment. The chart system 100 is stored on a computer 10. The computer 10 may be any computer capable of executing an application program (app) on a processor, such as a smartphone, tablet, or personal computer (PC). The chart system 100 is stored in storage within the computer 10. For example, the chart system 100 is installed on storage and executed on an operating system (OS). The chart system 100 primarily has the function of displaying, in charts (diagrams), time-series changes in the prices (opening price, closing price (current price), low price, and high price) of financial products such as stocks, stock index futures, and commodity futures, and the function of placing buy and sell orders for financial products whose prices are displayed on charts. As shown in FIG. 1, the computer 10 is connected to a trading server 20. The trading server 20 is a server operated by a financial institution, such as a securities company, that trades financial products. The trading server 20 is connected to a wide area network such as the Internet, and the computer 10 and trading server 20 are connected via the wide area network. The chart system 100 is configured to be able to communicate with the trading server 20. As shown in FIG. 1, the trading server 20 is also connected to an exchange 30. The exchange 30 is an exchange such as the Tokyo Stock Exchange or the Tokyo Commodity Exchange that determines the prices of financial products and executes trades. The trading server 20 is connected to the computer of the exchange 30 via a wide area network such as the Internet.

The trading server 20 obtains the current price of a financial product from the exchange 30's computer and transmits it to the chart system 100. The trading server 20 also transmits the past prices of the financial product to the chart system 100. The chart system 100 draws a chart showing price fluctuations of the financial product based on the received current and past prices. Meanwhile, the chart system 100 accepts user instructions to buy or sell financial products from the chart, generates a buy or sell instruction message indicating the accepted buy or sell instruction, and transmits it to the trading server 20. The trading server 20 transmits buy or sell instructions corresponding to the buy or sell instruction message to the exchange 30's computer, causing the exchange 30's computer to execute the buy or sell.

The computer 10 has a display means such as an LCD display, or is connected to a display means. The computer 10 has an input means such as a mouse or keyboard, or is connected to an input means. The display means and input means may be integrated into a touch panel. The chart system 100 draws and displays charts on the display means. The chart system 100 accepts buy and sell instructions from the user using the input means.

Exchange 30 may be a public exchange such as the Tokyo Stock Exchange or the Tokyo Commodity Exchange, or a private exchange operated by a securities company such as Goldman Sachs. Financial products traded on exchange 30 include stocks, stock index futures, commodity futures, options, warrants, etc.

Figure 2 shows an example of a GUI (graphical user interface) including a chart that is drawn and provided by the chart system 100. In this embodiment, as an example, a GUI provided by the chart system 100 that displays stock prices (share prices) as financial products and issues instructions for buying and selling stocks will be described. The GUI includes a chart display 101 that displays a chart. The GUI includes a stock input 102. The stock input 102 is a GUI element that accepts user input for entering stock names for which a stock price chart is to be displayed in the chart display 101. User input includes input of stock names, stock codes (securities codes), ticker codes, etc. The stock input 102 includes an icon, and the entered stock is displayed. In the example of Figure 2, the stock with stock code 2671 is entered and displayed.

The GUI includes a time bar selection 103. The time bar selection 103 is a GUI element that accepts a user selection to select which of multiple charts generated at different time intervals to draw in the stock price chart drawn on the chart display 101. Examples include monthly charts based on monthly time bars, weekly charts based on weekly time bars, daily charts based on daily time bars, and minute charts based on predetermined minute intervals such as 1 minute or 5 minutes. As shown in FIG. 2, the time bar selection 103 includes multiple icons corresponding to monthly, weekly, daily, and minute time bars. User selection is accepted by selecting an icon, and the display mode (color, etc.) of the icon corresponding to the selected time bar changes. In the example of FIG. 2, a daily chart is selected. On the chart display 101, bullish and bearish candlesticks are distinguished and drawn; for example, the body of a bullish candlestick is drawn in white, and the body of a bearish candlestick is drawn in black. Additionally, the chart display 101 displays ruled lines 104 according to stock prices, with the corresponding prices displayed at the ends of each ruled line (in the example of Figure 2, eight ruled lines 104 are displayed, with prices ranging from 350 yen to 650 yen in 50 yen increments). Each candlestick is displayed at a predetermined distance from the others.

The chart display 101 is a chart of the stock entered in stock input 102, and draws and displays a chart of the time unit interval selected in interval selection 103. The chart display 101 draws the four stock price values (open price, low price, high price, closing price (current price)) as candlesticks based on past stock prices, current stock prices, and quotes received from the trading server. In the example of Figure 2, a daily chart of the stock price of stock code 2671 is drawn. The chart system 100 draws candlesticks showing past stock price trends on the chart display 101 based on stock price information previously received from the trading server 20, regardless of whether it is during or outside trading hours. During trading hours, the chart system 100 updates the drawing of the candlesticks for the day on the chart display 101 at any time based on the current stock prices received from the trading server 20 at predetermined time intervals. Outside trading hours, from a predetermined time before the start of trading (for example, 15 minutes before) until the closing, the chart system 100 displays quote information and gap information (described below) on the chart display 101 based on quotes received from the trading server 20.

(1. Quote information and gap information)
The following describes the quote price information and gap information displayed on the chart display 101 outside trading hours, from a predetermined time before the start of trading to the market opening. FIG. 3 shows an example of quote price information and gap information displayed on a daily chart. Because it is before the start of trading, the chart display 101 displays candlesticks of stock prices up to yesterday (16 candlesticks in the example of FIG. 3). Here, the chart system 100 draws quote price information 111 based on quote price information received from the trading server 200 at any time. The quote price information 111 is displayed at a position corresponding to the quote price after trading begins (i.e., a predetermined interval from the most recent candlestick 110). The quote price information 111 is a symbol on a line drawn at a position corresponding to the quote price, and is updated in accordance with changes in the received quote price. Furthermore, the chart system 100 renders the quote information 111 in different display modes (e.g., different colors, different hues, different contrasts, etc.) depending on whether the quote price is an increased or decreased price compared to the closing price indicated by the most recent candlestick 110. For example, the quote information 111 is rendered in a first color when the quote price is higher than the closing price indicated by the most recent candlestick, and in a second color when the quote price is lower than the closing price indicated by the most recent candlestick. When the quote price and the closing price indicated by the most recent candlestick are the same, the quote information 111 is displayed in the first color, the second color, or a different third color. This helps to visually and instantly grasp whether the stock is likely to open higher than the previous day's closing price (likely to gap up) or lower than the previous day's closing price (likely to gap down).

Furthermore, to help users visually and instantly grasp whether the stock is likely to gap up or down from the previous day's closing price, the chart system 100 displays gap information 112 on the chart display 101. The chart system 100 draws gap information 112 indicating the difference between the closing price indicated by the most recent candlestick 110 and the quote price indicated by the quote price information 111 based on the two prices. As an example, the gap information 112 is a rectangular symbol drawn at least between the closing price of the candlestick 110 and the quote price information 111 in a manner that fills the difference between the two prices. The chart system 100 draws the gap information 112 in different display formats (e.g., different colors, different hues, different contrast, etc.) depending on whether the quote price is a higher or lower price compared to the closing price indicated by the most recent candlestick 110. For example, gap information 112 is drawn in a first color if the quote price is higher than the closing price indicated by the most recent candlestick, and in a second color if the quote price is lower than the closing price indicated by the most recent candlestick. If the quote price and the closing price indicated by the most recent candlestick are the same, the gap information 112 is displayed in the first color, the second color, or a third color. This helps users visually and instantly grasp whether the stock is likely to open higher than the previous day's closing price (likely to gap up) or lower than the previous day's closing price (likely to gap down). Furthermore, if the quote price and the closing price indicated by the most recent candlestick are the same, there is no gap, and chart system 100 does not need to draw gap information 112.

Even in the case of a weekly chart, if the current week's candlestick has not yet been drawn before the opening time of the first trading day of the week, the current week's candlestick has not yet been drawn. Therefore, just as with daily charts, the closing price indicated by the most recent candlestick (the previous week's candlestick) can be compared with the quote value, and quote information 111 and gap information 112 can be drawn at a position where the current week's candlestick will be drawn, a predetermined distance from the most recent candlestick. On the other hand, if the current week's candlestick has already been drawn before the opening time of trading on or after the first trading day of the week, the display format will be different from that of daily charts. Figure 4 shows an example of quote information and gap information displayed on a weekly chart. The example in Figure 4 shows quote information and gap information displayed before the opening time of trading on the third day of the week. The chart system 100 draws the quote information 111 and the gap information 112 at the display position of the candlestick 113 based on a comparison between the closing price and the quote price indicated by the candlestick 113 for the current week. The quote information 111 and the gap information 112 are displayed superimposed on the candlestick 113. Even in the case of monthly chart cheating, if the trading time is before the start of trading on the first trading day of the month, the candlestick for the current month has not yet been drawn. Therefore, as with daily charts, the quote information 111 and the gap information 112 can be displayed at the position where the candlestick for the current month, a predetermined interval from the most recent candlestick, is to be drawn by comparing the closing price and the quote price indicated by the most recent candlestick (the candlestick for the previous month). On the other hand, if the trading time is before the start of trading on or after the first trading day of the month, the candlestick for the current month has already been drawn. Therefore, the quote information 111 and the gap information 112 are drawn at the display position of the candlestick for the current month.

The chart system 100 draws candlesticks including the opening price of the day after the opening time of the stock. That is, there is a seamless transition from drawing quote information to drawing candlesticks including the opening price of the day. Accordingly, when the drawing of candlesticks begins at the opening, the chart system 100 continues to display gap information in the form of the price difference between the previous day's closing price and the opening price of the day. That is, there is a seamless transition from drawing gap information showing the price difference between the previous day's closing price and the quote price of the day to drawing gap information showing the price difference between the previous day's closing price and the opening price of the day. Before the opening, the drawing of gap information changes in response to changes in quote prices, but after the opening, the opening price is fixed and the drawing of gap information does not change until the end of trading. Figure 5 shows the display transition after the opening of the daily chart shown in Figure 3. As shown in FIG. 5, after the opening of a daily chart, the chart system 100 continues to draw gap information 112 representing the price difference between the previous day's closing price and the current day's opening price while drawing candlesticks 114 for that day according to the current stock price received from the trading server 20. Even if the gap is filled due to a change in the current price, as shown in FIG. 5, the gap information 112 is displayed so that it is not completely hidden by the candlesticks 114. For example, as shown in FIG. 5, it is preferable that the gap information 112 be drawn wider than the main body of the candlesticks 114.

For weekly charts, the rendering of candlesticks after the opening of the first trading day of the week is similar to that of daily charts. The chart system 100 begins rendering new candlesticks for the current week and continues rendering gap information 112 in a format that represents the price difference between the previous week's closing price and the current week's opening price (i.e., the opening price of the current day). Meanwhile, since the current week's candlesticks have already been rendered, the chart system 100 updates the rendering of the current week's candlesticks based on the current stock prices received from the trading server 20 at any time after the opening of the first trading day of the week. Accordingly, when the rendering of candlesticks begins to be updated at the opening, the chart system 100 continues to display gap information in the display position of the current week's candlesticks, showing the price difference between the previous day's closing price and the current day's opening price. Figure 6 shows the display transition after the opening of the weekly chart shown in Figure 4. As shown in FIG. 6 , after the opening of a weekly chart on or after the first trading day of the week, the chart system 100 updates the rendering of the current week's candlesticks 113 according to the current stock prices received from the trading server, while continuing to render gap information 112 in a form that represents the price difference between the previous day's closing price and the current day's opening price. As shown in FIG. 6 , the candlesticks 113 and gap information 112 are displayed so that the gap information 112 does not obscure the display of stock price fluctuations in the candlesticks 113, and so that the display of stock price fluctuations in the candlesticks 113 does not obscure the display of the gap information 112. For example, as shown in FIG. 6 , the candlesticks 113 and gap information 112 are rendered overlapping each other, and the gap information 112 may be rendered narrower than the main body of the candlesticks 113.

(2. Information on deviation rate from past average gap)
While the quote information 111 and gap information 112 allow the user to grasp the gap up or gap down from the previous day's closing price, it would also be useful to know how the magnitude of this gap up or gap down compares to the average gap up or gap down in the past. In other words, if a stock with a small average daily gap up or gap down suddenly experiences a large gap up or gap down, being able to instantly visually grasp this is useful for investment decisions. Therefore, the chart system 100 derives an average gap value by averaging the price range of the gap up or gap down over the past X days (e.g., the past 25 days), and plots average gap information indicating this average gap value and deviation rate information indicating the degree to which the current day's gap up or gap down deviates from the average gap value on the chart display 101. The value of X for the past X days may be preset, or the user may be able to arbitrarily specify it using the input means of the computer 10.

The chart system 100 derives the average gap value for the stock over the past X days on the chart display 101 and displays the average gap information and deviation rate information along with the quote information 111 and gap information 112. The average gap value is the average of the gap values, which are the difference between the previous day's closing price and the next day's opening price, over the past X days. For example, the average gap value for the past three days can be calculated by adding the difference between the closing price four days ago and the opening price three days ago (first gap value), the difference between the closing price three days ago and the opening price two days ago (second gap value), and the difference between the closing price two days ago and the opening price one day ago (the previous day) (third gap value), and dividing the sum by three. For example, if the first gap value is +50 yen, the second gap value is +100 yen, and the third gap value is -30 yen, the average gap value can be calculated as (50 yen + 100 yen - 30 yen) ÷ 3 = +40 yen. The chart system 100 displays average gap information, which visually represents the price range, which is the average gap value, so as to be visually comparable with the bid/ask information 111 and the gap information 112. FIG. 7 shows an example in which average gap information 115 is displayed on a daily chart before the stock opens. In the example shown in FIG. 7, the average gap information 115 is displayed as a strip-shaped or rectangular symbol corresponding to the price range of the average gap value, based on the position of the previous day's closing price indicated by the previous day's candlestick 110. The average gap information 115 may be displayed near the gap information 112 together with the gap information 112. The average gap information 115 may be displayed in a different display mode (e.g., a different color) from the gap information 112 so as to be distinguishable. Alternatively, as shown in FIG. 8, the average gap information 115 may be displayed together with the bid/ask information 111 without displaying the gap information 112. The chart system 100 may continue to display the average gap information 115 even after the stock opens. FIG. 9 shows an example in which average gap information 115 is displayed on a daily chart after the stock's opening. In the example shown in FIG. 9, average gap information 115 is drawn together with the current day's candlestick 114 and gap information 112. Even after the opening, as shown in FIG. 10, gap information 112 may not be displayed, and average gap information 115 may be drawn superimposed on the drawing of the current day's candlestick 114.

Before the stock opens, the chart system 100 derives a deviation rate based on the derived average gap value and bid/ask price, and displays the deviation rate information on the chart display 101. The deviation rate indicates how much the gap on that day deviates from the past average gap value. In the case of before the market opens, it indicates how much of a gap the opening price is likely to be based on the bid/ask price. The chart system 100 may continue to display deviation rate information based on the average gap value and the opening price on that day, even after the market opens. The deviation rate can be calculated by (bid/ask price or opening price - previous day's closing price) ÷ average gap value. For example, if the bid/ask price is 1,000 yen, the previous day's closing price is 940 yen, and the average gap value is 50 yen, then (1,000 yen - 940 yen) ÷ 50 yen = 1.2, and the deviation rate is +20%.

Before the opening, the chart system 100 may display the deviation rate by changing the display mode of the quote information 111. For example, as shown in FIG. 11, the chart system 100 may retain setting information 120 that sets different colors according to multiple deviation rates, and may refer to this setting information 120 to render the quote information 111 in a color corresponding to the derived deviation rate. For example, if the derived deviation rate is +20%, the chart system 100 may display the quote information 111 in color 4. The chart system 100 may also display the deviation rate by changing the display mode of the gap information 112 before and after the opening. In this case, as described above, the chart system 100 may refer to the setting information 120 to render the gap information 112 in a color corresponding to the derived deviation rate. The chart system 100 may also display the deviation rate information 116 as a numerical value on the chart display 101, as shown in FIGS. 12 and 13. As shown in FIG. 12, before the opening, the deviation rate information 116 may be displayed near the quote information 111. As shown in FIG. 13, after the opening, the deviation rate information 116 may be displayed near the current day's candlestick 114.

When deriving past average gap values, the chart system 100 may calculate them separately for gap-up cases (when the opening price of the next day rises from the closing price of the previous day) and gap-down cases (when the opening price of the next day rises from the closing price of the previous day). In this case, the chart system 100 separately derives the average gap-up value for X days of past gap-ups and the average gap-down value for X days of past gap-downs. When displaying average gap information 115 before the opening, the chart system 100 may selectively display average gap information 115 indicating the average gap-up value or the average gap-down value depending on whether the bid price is higher or lower than the closing price of the previous day (i.e., whether a gap-up or gap-down is likely to occur on that day). In other words, if a gap-up is likely to occur on that day, average gap information 115 indicating the range of the average gap-up value may be drawn, and if a gap-down is likely to occur on that day, average gap information 115 indicating the range of the average gap-down value may be drawn. Similarly, when displaying average gap information 115 after the opening, the chart system 100 may selectively display average gap information 115 indicating the average gap up value or average gap down value depending on whether the opening price of the day is higher or lower than the closing price of the previous day (i.e., whether there was a gap up or gap down on the day). In other words, if there was a gap up on the day, average gap information 115 indicating the price range of the average gap up value may be drawn, and if there was a gap down on the day, average gap information 115 indicating the price range of the average gap down value may be drawn.

Furthermore, the chart system 100 may also derive separate deviation rates for the average gap-up value and the average gap-down value. In this case, the chart system 100 selectively derives the gap-up deviation rate, which is the deviation rate from the average gap-up value, or the gap-down deviation rate, which is the deviation rate from the average gap-down value, depending on whether the quote price or the opening price of the day is higher or lower than the closing price of the previous day (i.e., whether a gap-up is likely (or has occurred) or a gap-down is likely (or has occurred)), and displays the corresponding deviation rate information. In other words, if a gap-up is likely or has occurred on the day, the gap-up deviation rate may be derived and displayed, and if a gap-down is likely or has occurred on the day, the gap-down deviation rate may be derived and displayed.

(3. Trading price limit range information)
Financial instruments traded on the exchange 30 may be subject to a system that restricts trading when prices fluctuate significantly beyond a specified price range. One example of such a system is a price limit system, in which a daily price range (available for trading) is set based on the previous day's closing price and trading at prices above that range is restricted. A price increase to the upper limit of the price range is sometimes called a stop-high, and a price decrease to the lower limit is sometimes called a stop-low. A system in which a daily price range is set, trading is halted for a certain period (e.g., 15 minutes) when the upper or lower limit of the price range is reached, and trading resumes at the same or an expanded price range after the period has elapsed is sometimes called a circuit breaker system. When such a price range is set, it is useful to display information about the price range on the chart in a visually recognizable manner. Therefore, the chart system 100 stores price range information regarding the price range within which a financial instrument can fluctuate and displays trading restriction information on the chart display 101 based on the price range information.

Figure 14 shows an example of price range information held by the chart system 100. The price range information 121 shown in Figure 14 is, as an example, price range information indicating price range limits determined according to the price range to which the previous day's closing price belongs. For example, if the previous day's closing price is between 1 yen and 100 yen, the price range for that day is limited to ±30 yen of the previous day's closing price, and if the previous day's closing price is between 700 yen and 1000 yen, the price range for that day is limited to ±150 yen.

The chart system 100 displays trading restriction information on the chart display 101 based on the previous day's closing price of the stock entered in stock input 102 (i.e., the stock whose chart is being displayed on the chart display 101) and price range information 121. Regardless of whether trading hours are inside or outside of trading hours, or at least either, the chart system 100 references the price range information 121 based on the previous day's closing price of the stock entered in stock input 102, and displays trading restriction information corresponding to the specified price limit range. The trading restriction information is, for example, a linear, band-shaped, or rectangular graphical symbol corresponding to the specified price limit range. Figure 15 shows, as an example, the display of trading restriction information 130 for the stock corresponding to the stock code "2671" entered in stock input 102. In the example of FIG. 15 , the chart system 100 determines a price limit range (±100 yen) based on the stock's closing price on the previous day (assuming it is 560 yen) by referring to the price range information 121, and applies the price limit range to the previous day's closing price to draw a band-shaped trading restriction information 130 with an upper limit of 660 yen and a lower limit of 460 yen. In the example of FIG. 15 , the trading restriction information 130 is displayed before the stock opens, at a predetermined distance from the stock's previous day's candlestick 110. FIG. 16 shows the trading restriction information 130 when the stock opens and the current day's candlestick 114 is being drawn. After the stock opens during trading hours, the chart system 100 draws the trading restriction information 130 while drawing the current day's candlestick 114. As shown in FIG. 16 , the trading restriction information 130 may be displayed superimposed on the current day's candlestick 114. The transaction restriction information 130 may be displayed in a strip or rectangle shape, wider than the candlestick 114.

For weekly charts, the drawing of candlesticks after the opening of the first trading day of the week is similar to that for daily charts. The chart system 100 draws the current week's (today's) candlesticks, along with the current day's bid/ask information 111 and the current week's (today's) candlesticks, and also draws trading restriction information 130 based on the previous day's closing price (the previous week's closing price) at least either before the start of drawing the candlesticks for the current week (before the stock's opening) or after the start of drawing the candlesticks for the current week (after the stock's opening). On the other hand, after the opening of the first trading day of the week or after the start of trading, the chart system 100 draws the current week's candlesticks 113 and also draws trading restriction information 130 based on the previous day's closing price. Figure 17 shows the trading restriction information 130 drawn together with the current week's candlesticks 113. As shown in Figure 17, the chart system 100 may display the trading restriction information 130 superimposed on the current week's candlesticks 113. The transaction restriction information 130 may be displayed in a strip or rectangle shape, wider than the candlestick 113.

Before the stock opens, the chart system 100 may display the quote information 111, gap information 112, and trading restriction information 130 superimposed on the chart display 101. Figure 18 shows an example in which the quote information 111, gap information 112, and trading restriction information 130 are superimposed on a daily chart. The gap information 112 and the trading restriction information 130 may be displayed in different colors. The gap information 112 and the trading restriction information 130 may be displayed in different widths.

(3. Chart-in-chart display)
Charts are available in different time units, such as daily, weekly, and minute charts. For example, daily charts are useful for understanding the price trend (whether it is an upward or downward trend) of a financial product over a period of several days to several tens of days, while minute charts are useful for understanding the price trend within a single day. To understand and analyze the price trend of a financial product in detail, charts with different time units may be compared for a given financial product. However, this requires switching the chart display. Switching the chart display makes it difficult to understand the relationship or connection between price trends that can be understood in charts with different time units (e.g., price trends that can be understood in a daily chart and price trends that can be understood in a minute chart). Therefore, the chart system 100 has a chart-in-chart display function that displays a chart of one time unit superimposed on a chart of another time unit on the chart display 101.

The chart system 100 accepts a user selection on the chart display 101 to select any candlestick (first unit time candlestick) in the first unit time chart (first unit time chart) being drawn. The user selection is accepted from the input means of the computer 10. In response to the selection of the first unit time candlestick, the chart system 100 draws a second unit time candlestick (second unit time candlestick) included in a chart of a second unit time (second unit time chart) different from the first unit time, which corresponds to the selected first unit time candlestick. Specifically, the chart system 100 draws multiple second unit time candlesticks included in the chart of a second unit time shorter than the first unit time, during the period of price fluctuation indicated by the first unit time candlestick. For example, while drawing a weekly chart in a weekly unit (first time unit), the chart system 100 accepts the selection of any weekly candlestick, and in response, draws multiple daily candlesticks within a daily chart in a daily unit (second time unit) for the price fluctuation period indicated by the selected weekly candlestick. For example, if a weekly candlestick representing price fluctuations over the five days from April 1 to April 5, 2020 is selected, multiple (five) daily candlesticks for the same five days from April 1 to April 5, 2020 are drawn. The chart system 100 may draw multiple second-unit-time candlesticks superimposed on the selected first-unit-time candlestick. The chart system 100 may draw the multiple second-unit-time candlesticks so that they overlap the selected first-unit-time candlestick but do not completely obscure the first-unit-time candlestick. The chart system 100 may associate multiple second-unit-time candlesticks with a selected first-unit-time candlestick and draw them near the selected first-unit-time candlestick. Figures 19 and 20 show an example in which, using the chart-in-chart display function, candlesticks from a daily chart are superimposed while a weekly chart of a stock (stock code 2671) entered in stock input 102 is being drawn. As shown in Figures 19 and 20, when a weekly candlestick 140 is selected in the weekly chart, the chart system 100 responsively draws multiple daily candlesticks 141 from the daily chart of the stock, which correspond to the price fluctuation period indicated by the weekly candlestick 140, superimposed on the weekly candlestick 140. In the examples of Figures 19 and 20, weekly candlesticks 140 for a certain five-day period are selected, and five daily candlesticks 141 from the same five-day period are drawn. In the case of a weekly chart, the five-day price fluctuations represented by a single weekly candlestick 140 can be grasped and analyzed in more detail using multiple daily candlesticks 141. When drawing the daily candlestick 141, the chart system 100 may draw the weekly candlestick 140 with a wider spacing between it and the adjacent weekly candlesticks 142 and 143 so that the drawing of the daily candlestick 141 does not overlap with the drawing of the weekly candlestick 140 and the adjacent weekly candlesticks 142 and 143. Furthermore, as shown in FIG. 21 , in response to the selection of a weekly candlestick 140, the chart system 100 may draw the selected weekly candlestick 140 with a wider width, and draw the daily candlestick 141 within the body of the weekly candlestick. As shown in FIG. 22, the charting system 100 may associate a daily candlestick 141 with the selected weekly candlestick 140 and render it adjacent to the weekly candlestick 140.

In the examples of Figures 19 to 22, a daily chart is depicted within a weekly chart. However, a minute chart (second time unit chart) can also be displayed within a daily chart (first time unit chart). In this case, the chart system 100 accepts the selection of a daily candlestick in the daily chart and, in response, draws multiple minute candlesticks (e.g., multiple 5-minute candlesticks from 9:00 to 15:00 on April 1, 2020) on the minute chart for the price fluctuation period indicated by the selected daily chart (e.g., from 9:00 to 15:00 on April 1, 2020). The chart system 100 may also execute the chart-in-chart display function during intraday trading hours. In this case, the chart system 100 accepts the selection of the first time unit candlestick for the current day, the drawing of which is being updated as needed, and, in response, draws second time unit candlesticks from the start of the price fluctuation period indicated by the first time unit candlestick to the current time. For example, while a daily chart is being drawn during the intraday session, if the selection of a daily candlestick for that day (e.g., April 1, 2020) is accepted at 10:00 during the intraday session, in response, multiple minute candlesticks from the minute chart will be drawn, covering the period from the start of the price fluctuation period indicated by the selected daily candlestick (e.g., the stock's opening time on April 1, 2020, 9:00) to the current time (10:00).

(3. Order Function 1)
The chart system 100 has an order issuing function that allows users to issue orders to buy or sell financial products displayed on the chart display 101. Typically, when issuing a buy order to purchase a financial product, users must specify the desired unit price (limit price or market order) and the desired lot size (for stocks, the stock price). However, when issuing a buy order, users must calculate the unit price and lot size to match the total amount they wish to purchase, without exceeding the funds (purchasing capacity) deposited with the financial institution that operates the trading server 20. In other words, when issuing a buy order, users must calculate "unit price x lot size," which results in the total amount they wish to purchase (≤ purchasing capacity), and then issue the order. For example, if users wish to purchase 1 million yen worth of a certain stock at a limit price of 157 yen, they must calculate 1 million divided by 157 to confirm that they can purchase up to 6,369 lots, and then issue a buy order for 6,369 lots. Performing such calculations instantly to issue a buy order is a burden for users. Furthermore, when issuing a market order rather than a limit order, the calculation must be based on the upper limit price of the stock's price limit for that day, which makes the calculation even more complicated. Furthermore, if you want to buy up to your purchasing capacity, you also need to consider the fees set by financial institutions, making it difficult to instantly calculate how many lots you can order to buy. Therefore, the chart system 100 automatically calculates the purchase lot size based on the desired purchase amount for a certain stock and the stock price, and issues a buy order.

The chart system 100 accepts buy order instructions on the chart display 101 for the financial product displayed on the chart display 101 (i.e., the product entered in product input 102). Figures 23 to 25 show an example of accepting a buy order on the chart display 101. As shown in Figure 23, the chart system 100 accepts a user selection of the product on the chart display 101 and, in response, displays a buy order UI 150. The user selection is, for example, the selection of any candlestick on the depicted chart. The buy order UI 150 includes a limit order instruction UI element 150a and a market order instruction UI element 150b, both of which are selectable. When the chart system 100 accepts the selection of the limit order instruction UI element 150a, it displays a limit order UI 151. The limit order UI 151 includes a purchasing capacity display 151a, a desired purchase amount input 151b, and a limit price input 151c. The purchasing power display 151a presents the user with purchasing power, which is the total amount of money the user has deposited with the financial institution and can use to purchase financial products. The financial institution's trading server 20 manages purchasing power for each user's account, and the chart system 100 receives and stores information on purchasing power corresponding to the user's account from the trading server 20. The chart system 100 displays the purchasing power display 151a by referencing the stored information on the user's purchasing power. The desired purchase amount input 151b is a UI element that accepts input of the total amount desired to purchase the stock. The chart system 100 accepts input of the amount by the user using the input means of the computer 10 at the desired purchase amount input 151b. The limit price input 151c accepts input of the limit price, which specifies the unit price at which the stock is to be purchased. The chart system 100 accepts input of the amount by the user using the input means of the computer 10 at the limit price 151c. Meanwhile, when the chart system 100 accepts selection of the market order instruction UI element 150b, it displays the market order UI 152. The market order UI 152 includes a purchasing capacity display 152a and a desired purchase amount input 152b. The purchasing capacity display 152a is the same as the purchasing capacity display 151a displayed in the limit order UI 151. The desired purchase amount input 152b is the same as the desired purchase amount input 151b displayed in the limit order UI 151. The market order UI 152 does not have a UI element for specifying the unit price at which to purchase the target stock.

In the case of a limit order, the chart system 100 automatically derives the lot to purchase the stock based on the total desired purchase amount entered in the desired purchase amount input 151b and the limit price entered in the limit price input 151c, and generates a limit buy order instruction indicating the limit price entered in the limit price input 151c and the derived lot. For example, if the total desired purchase amount is 1,000,000 yen and the limit price is 158 yen, the chart system 100 calculates 1,000,000 divided by 158, which gives 6,329.113924..., indicating that up to 6,329 lots can be purchased. The chart system 100 then generates a limit buy order instruction indicating a limit price of 158 yen and a purchase lot of 6,329. Note that financial products may have a set lot unit for purchase. For example, in the case of stocks, the share unit (e.g., 1 share, 10 shares, 100 shares, etc.) is set. In such cases, it is advisable to further consider the share unit when deriving the lot. The chart system 100 receives and stores information regarding the purchase lot unit from the trading server 20. The chart system 100 may generate a buy order instruction based on the total desired purchase amount entered in the desired purchase amount input field 151b, the limit price entered in the limit price input field 151c, and the purchase lot unit. For example, if the total desired purchase amount is 1,000,000 yen and the limit price is 158 yen, and the purchase lot unit is 10 lots (e.g., 10 shares), rounding down to the nearest tenth indicates that 6,320 lots can be purchased, and a limit buy order instruction indicating a limit price of 158 yen and a purchase lot of 6,320 lots is generated. Furthermore, if the amount entered in the desired purchase amount input field 151b is greater than the amount displayed in the purchasing capacity display 151a, the chart system 100 may issue a warning to the user that a buy order cannot be placed. The warning may be displayed using a UI element. Furthermore, if a specified fee is required to purchase a financial product, that fee must also be taken into consideration. For this reason, the chart system 100 may receive information regarding fees from the buying and selling server 20, and may issue a warning to the user if the amount entered in the desired purchase amount input field 151b exceeds an upper limit equal to the amount displayed in the purchasing capacity display 151a minus the fees. Alternatively, the chart system 100 may display the amount minus the fees in advance in the purchasing capacity display 151a.

In the case of a market order, the chart system 100 automatically derives the lot to purchase the stock based on the total desired purchase amount entered in the desired purchase price 152b and the upper limit of the price range that can fluctuate on that day for the stock, and generates a market buy order instruction for the derived lot. Specifically, the chart system 100 refers to the price range information 121 based on the previous day's closing price for the stock, identifies the upper limit of the price range that can fluctuate on that day (upper limit of the price range limit), and calculates the lot based on this upper limit and the total desired purchase price. For example, if the previous day's closing price for the stock is 560 yen, referring to the price range information 121, the price range that can fluctuate on that day (upper limit of the price range limit) is ±100 yen, so 660 yen is identified as the upper limit. For example, if the total desired purchase amount is 1,000,000 yen, the chart system 100 divides 1,000,000 by 660. The answer is 1,515.1515..., which indicates that up to 1,515 lots can be purchased. The chart system 100 generates a market buy order indicating a purchase lot of 1,515. Note that financial products may have a set lot size for purchase. For example, in the case of stocks, the share size (e.g., 1 share, 10 shares, 100 shares, etc.) is set. In such cases, the lot size may be determined by taking the share size into consideration. The chart system 100 receives and stores information regarding the purchase lot size from the trading server 20. The chart system 100 generates a buy order instruction based on the total desired purchase amount entered in the desired purchase amount input 152b, the upper limit identified by reference to the price range information 121, and the purchase lot size. For example, if the total desired purchase amount is 1,000,000 yen and the specified upper limit is 660 yen, and the purchase lot size is 10 lots (e.g., 10 shares), rounding down to the nearest tenth reveals that 1,510 lots can be purchased, and a market buy order instruction is generated indicating a purchase lot size of 1,510. Furthermore, if the amount entered in the desired purchase amount input field 152b is greater than the amount displayed in the purchasing capacity display 152a, the chart system 100 may issue a warning to the user that a buy order cannot be placed. The warning may be displayed using a UI element. Furthermore, if a specified fee is required to purchase a financial product, the fee must also be taken into consideration. Therefore, the chart system 100 may receive information regarding fees from the trading server 20 and issue a warning to the user if the amount entered in the desired purchase amount input field 152b exceeds the upper limit, which is the amount displayed in the purchasing capacity display 152a minus the fee. Alternatively, the chart system 100 may display the amount from which the commission fee has been deducted in advance in the purchasing power display 152a.

The chart system 100 sends the generated limit buy order instruction or market buy order instruction to the trading server 20. The buy order instruction includes information indicating the financial product (issue) for which a buy order is being placed (e.g., a stock code), information indicating the purchase lot, and, in the case of a limit buy order, information indicating the limit price. The trading server 20 executes the order by sending a buy order at the limit price or market price to the exchange 30 computer based on the buy order information.

(4. Order Function 2)
The chart system 100 has an order instruction function that allows users to place orders to buy or sell financial products displayed on the chart display 101. Typically, when placing a buy order to purchase a financial product, users must specify the desired purchase price (limit price or market order) and the desired lot (for stocks, the stock price). Similarly, when selling a financial product, users must specify the desired selling price and lot. However, users may wish to specify the desired purchase price not only as an absolute amount (e.g., a limit price of 500 yen) but also as a relative amount based on comparison with other factors. For example, users may want to place a limit buy order at a price within a range of the stock's daily fluctuations, within a few tens of percent of the upper limit of the range. This is the case when a day trader decides that "even if I purchase near the upper limit of the daily price range, there is little room for the stock to rise that day, so I shouldn't buy." Similarly, when placing a sell order for a stock that they have purchased, users may want to place a limit sell order at a price within a range of the stock's daily fluctuations, within a few percent of the upper limit of the range. This is the case when a day trader makes a decision such as, "I'll sell at a price where there is little room for further price increases." Therefore, the chart system 100 refers to the price range information 121 for a certain stock and enables buy and sell orders based on the price range that can fluctuate on that day for that stock.

When the chart system 100 accepts selection of the limit order instruction UI element 150a in the buy order UI 150 shown in FIG. 23, it displays the limit order UI 153 as shown in FIG. 26. The limit order UI 153 includes a purchasing power display 153a, price limit range information 153b, limit price amount input 153c, purchasable lot information 153d, and purchase price input 153e. Similar to the purchasing power display 151a, the purchasing power display 153a indicates the purchasing power, which is the total amount of money the user has deposited with a financial institution and can use to purchase financial products. The price limit range information 153b presents information indicating the price range within which the stock can fluctuate on that day; specifically, it displays a price range identified by reference to price range information 121 based on the previous day's closing price of the stock. In the example shown in FIG. 26 , the closing price of the stock (corresponding to stock code 2671) on the previous day was 560 yen. Referring to the price range information 121, the stock's price limit (price limit range) for that day is ±100 yen. Therefore, "460 yen to 660 yen" is displayed as the price limit range information 153b. The limit price input 153c is a UI element that accepts input of the unit price at which the user wishes to purchase the stock, and accepts the desired purchase price within the stock's available price range (price limit range) for that day. For example, as shown in FIG. 26 , the following instruction is accepted: a limit order price expressed as a percentage relative to the upper limit of the price limit range. The chart system 100 accepts user input (e.g., percentage input) using the input means of the computer 10 via the limit price input 153c. In addition to percentages, input may be made as a percentage, or a price directly indicating how much lower the price is from the upper limit of the price limit range. The chart system 100 automatically determines the price (limit price) for placing a limit order based on the information entered in the limit price input 153c. As an example, when the limit price range is 460 yen to 660 yen, if "10%" is entered in the limit price input 153c, the limit order amount may be determined to be 594 yen, which is calculated by subtracting 66 yen, which is 10% of 660 yen, from 660 yen (i.e., 594 yen as a price 10% lower than the upper limit price of 660 yen). As another example, when the limit price range is 460 yen to 660 yen, if "10%" is entered in the limit price input 153c, the limit order amount may be determined to be 600 yen, which is calculated by dividing 660 yen by 1.1 (i.e., 600 yen as a price that is expected to have a 10% upside potential after purchase from the upper limit price of 660 yen). As another example, when the price limit range is 460 yen to 660 yen and "50 yen" is entered in the limit price input 153c, the limit order amount may be determined to be 610 yen, which is 660 yen minus 50 yen. The chart system 100 calculates the number of lots available for limit orders based on the available purchase capacity displayed in the purchase balance display 153a and the limit order amount determined from the price entered in the limit price input 153c, and displays the calculated available limit order lot in the available purchase lot information 153d. Specifically, the calculation is made by dividing the available purchase capacity by the limit order amount. In the example shown in FIG. 26, 5,000 lots (5,000 shares) are displayed as the available purchase lot information 153d. The purchase price input 153e is a UI element that accepts input of the lot (number of shares) desired to purchase the stock, and accepts the specification of the purchase lot using a number equal to or less than the lot displayed in the available purchase lot information 153d. The chart system 100 accepts input from the user using the input means of the computer 10 in the purchase unit price input 153e.

The chart system 100 generates a limit buy order instruction indicating the limit price automatically determined based on the information entered in the limit price input 153c and the lot entered by the user in the purchase price input 153e. The chart system 100 sends the generated limit buy order instruction to the trading server 20. The buy order instruction includes information indicating the financial product (issue) for which a buy order is to be placed (e.g., a securities code), information indicating the purchase lot, and information indicating the limit price. The trading server 20 executes the order by sending a buy order at the limit price to the exchange 30 computer based on the buy order information.

(5. PTS Price Information)
The financial institution operating the trading server 20 may also operate a PTS (private trading system) and trade the same financial product both through the exchange 30 and on the PTS. In this case, the trading server 20 communicates with the public exchange 30 to obtain financial product prices and issue instructions for buying and selling the financial product, and also operates the PTS to issue instructions for buying and selling the financial product within the PTS. The trading server 20 transmits to the computer 10 quotes, current prices, and past prices for the same financial product traded on the exchange 30, and transmits quotes, current prices, and past prices for the same financial product traded on the PTS to the computer 10. The chart system 100 plots price information for the same financial product traded on the exchange 30 received from the trading server 20 on a chart, and plots price information for the same financial product traded on the PTS received from the trading server 20 on a chart. The chart system 100 has the function of, when drawing a chart of price information traded on the exchange 30 in the chart display 101, simultaneously drawing auxiliary price information that has been or is being traded on the related PTS.

Figure 27 is a diagram showing an example of the relationship between trading hours at the exchange 30 and trading hours at the PTS. As an example, the trading hours at the exchange 30 and the trading hours at the PTS are different, although there is some overlap. In the example shown in Figure 27, trading at the exchange 30 takes place in the morning session from 9:00 to 11:30 and the afternoon session from 12:30 to 15:00, while trading at the PTS takes place in a daytime session from 8:20 to 16:00 and a nighttime session from 16:30 to 23:59. Between the morning and afternoon sessions, trading can take place in the daytime session of the PTS in parallel.

The chart system 100 draws a chart by plotting multiple candlesticks based on the time-series prices of the financial product entered in the stock input 102 before the opening of trading on the exchange 30, and also plots PTS price information related to the PTS trading price of the same financial product. The PTS price information may be, for example, a candlestick showing the time-series price fluctuations in the daytime session before the opening of trading on the current day, a candlestick showing the time-series price fluctuations in the nighttime session of the previous day, or a candlestick showing the time-series price fluctuations from the nighttime session of the previous day to the daytime session before the opening of trading on the current day. Furthermore, the PTS price information may be, for example, a GUI element showing the latest price in the daytime session before the opening of trading on the current day, or a GUI element showing the latest price (closing price) in the nighttime session of the previous day.

Figure 28 shows an example of PTS price information being drawn on a daily chart. In the example shown in Figure 28, the chart system 100 draws a chart with multiple daily candlesticks based on the time-series fluctuations in the trading price at the exchange 30 of the stock corresponding to the stock code 2671 entered in stock input 102 before the opening of the day, and draws PTS price information 160 near the most recent candlestick (a candlestick showing the four prices of the previous day) 110. The PTS price information 160 is, for example, a candlestick based on the trading price from the previous day's nighttime session to the current time of the day's daytime session. When the PTS price information 160 is a candlestick, it is drawn in a different display style (color, hue, contrast, etc.) than the candlestick 110. That is, when the bullish candlesticks 110 are displayed in the first display mode and the bearish candlesticks 110 are displayed in the second display mode, the bullish candlesticks of the PTS price information 160 are drawn in the third display mode, and the bearish candlesticks of the PTS price information 160 are drawn in the fourth display mode. FIG. 29 shows an example in which the PTS price information 160 is drawn as a bar-shaped GUI element. In the example shown in FIG. 29, the PTS price information 160 is drawn at the position of the latest price (current price in the daytime session) of the stock corresponding to the stock code 2671.

Figure 30 shows an example of a daily chart in which PTS price information 160 for a stock corresponding to stock code 2671 is drawn during the intraday session after the opening of the day. In the example shown in Figure 30, PTS price information 160 is drawn in a comparable manner near candlestick 114, along with candlestick 114 showing the trading price (four-digit price for the day) at exchange 30 for the day. PTS price information 160 is, for example, a candlestick based on the trading price from the previous day's nighttime session to the current time of the day's daytime session. When PTS price information 160 is a candlestick, it is drawn in a different display format (color, hue, contrast, etc.) than candlestick 114. That is, when the bullish candlesticks 114 are displayed in the first display mode and the bearish candlesticks 114 are displayed in the second display mode, the bullish candlesticks of the PTS price information 160 may be drawn in the third display mode, and the bearish candlesticks of the PTS price information 160 may be drawn in the fourth display mode. As before the opening, the PTS price information 160 after the opening may also be drawn as a bar-shaped GUI element as shown in FIG. 31.

By displaying PTS price information 160 on the chart display 101, the user can compare the post-opening quotes and post-opening trading prices on the exchange 30 for the day with the prices from the PTS nighttime session of the previous day and the daytime session of the current day, thereby providing more advanced support for the user's investment decisions. While the examples in Figures 28 to 30 illustrate the display of PTS price information 160 on a daily chart, PTS price information 160 can also be displayed on candlestick charts with different time frames, such as weekly charts. Furthermore, the chart system 100 may simultaneously display some or all of the above-mentioned quote information 111, gap information 112, average gap information 115, deviation rate information 116, trading restriction information 130, and PTS price information 160 on the chart display 101. FIG. 32 shows an example in which, before the opening of the stock corresponding to code 2671, quote price information 111, gap information 112, average gap information 115, deviation rate information 116, trading restriction information 130, and PTS price information 160 are all displayed side by side on the chart display 101. FIG. 33 shows an example in which, during the intraday session after the opening of the stock corresponding to code 2671, gap information 112, average gap information 115, deviation rate information 116, trading restriction information 130, and PTS price information 160 are all displayed side by side, along with the current day's candlestick 114. As shown in FIGS. 32 and 33, it is preferable to display each piece of information side by side so that it can be seen at a glance.

An example of the hardware configuration of the computer 10 and chart system 100 is described below. Figure 34 is a block diagram showing an example of the hardware configuration of the computer 10. The computer 10 is a computer such as a personal computer (PC), tablet, or workstation. The computer 10 includes a processor 11, a display unit 12, an input unit 13, a communication unit 14, and a memory 15. Each unit is interconnected by a bus.

Processor 11 is a control unit that controls each part, receiving and processing signals from each part and sending command signals to each part. Specifically, processor 11 includes a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). Processor 11 performs various functions by executing computer programs stored in memory 15.

The display unit 12 is a display including display elements such as liquid crystal or organic electroluminescence (EL), and displays images based on the video data output from the processor 11. The GUI including the chart display 101 described above is displayed on the display unit 12.

The input unit 13 is an input device that accepts user operations such as designations and selections and sends input signals to the processor 11. The input unit 13 may be, for example, a physical keypad, buttons, etc., or may include a touch sensor that detects contact with the user's finger or stylus. The display unit 12 and the input unit 13 may be integrated to form a touch panel. The input unit 13 accepts various operational inputs, such as user input operations in the stock input 102, user selection operations in the candlestick selection 103, candlestick selection operations on the chart display 101, and user input operations in the order UIs 150, 151, 152, and 153.

The communication unit 14 is a communication circuit for connecting to the trading server 20 and the exchange 30 computers via the Internet. The communication unit 14 may be a communication circuit for wired Internet communication via an Ethernet cable or the like, or a communication circuit for wireless Internet communication via a wireless LAN or the like.

Memory 15 is a storage medium that stores data, and may be ROM (Read Only Memory), RAM (Random Access Memory), or a combination thereof. Processor 11 can write and store various data in memory 15, as well as read and process data stored in memory 15. Memory 15 stores chart program 15a. Chart program 15a is a computer program containing instructions for executing the functions of the chart system 100 described above. Chart system 100 is realized when processor 11 executes chart program 15a.

The above describes an embodiment of the present invention using Figures 1 to 34, but this is for illustrative purposes only and not for limitation. It is clear that various modifications and changes can be made to the embodiment without departing from the spirit of the present invention as set forth in the claims.

10 Computer 11 Processor 12 Display unit 13 Input unit 14 Communication unit 15 Memory 20 Trading server 30 Exchange 100 Chart system 101 Chart display 102 Stock input 103 Bar selection 104 Chart line 110 Latest candlestick 111 Quote price information 112 Gap information 113 Current week's candlestick 114 Today's candlestick 115 Average gap information 116 Deviation rate information 120 Setting information 121 Price range information 130 Trading limit information 140 Candlestick 141 Candlestick 150 Buy order UI
151 Limit Order UI
152 Market Order UI
153 Limit Order UI
160 PTS Price Information

Claims (5)

A chart system that draws a chart showing the price fluctuations over time of a financial product of an input brand,
the chart displays candlesticks at different first time intervals in a rightward direction over time based on the trading price of the stock traded on a stock exchange,
configured to display auxiliary information related to the candlestick of the first time frame on the chart;
A chart system in which the display of the auxiliary information includes displaying a symbol indicating the trading price (PTS price) of the stock on a private exchange other than the stock exchange near the most recent candlestick among the candlesticks of the first hourly time frame, at a price position on the chart corresponding to the PTS price. 10. The chart system of claim 1,
the trading hours of the private exchange include a daytime session that at least partially overlaps with the trading hours of the securities exchange;
The display of the symbol includes (A) displaying a candlestick-shaped symbol indicating time-series price fluctuations in the daytime session of the current day, or (B) displaying a symbol indicating the latest price in the daytime session of the current day. 10. The chart system of claim 1,
the trading hours of the private exchange include a nighttime session after trading hours of the securities exchange;
A chart system in which the display of the symbol includes (A) displaying a candlestick-shaped symbol indicating time-series price fluctuations in the previous day's nighttime session, or (B) displaying a symbol indicating the closing price of the previous day's nighttime session. 10. The chart system of claim 1,
the trading hours of the private exchange include a daytime session that at least partially overlaps with the trading hours of the securities exchange and a nighttime session that follows the trading hours of the securities exchange;
The display of the symbols includes displaying candlestick-shaped symbols based on trading prices from the nighttime session of the previous day to the current time in the daytime session of the current day. 10. The chart system of claim 1,
the trading hours of the private exchange include a daytime session that at least partially overlaps with the trading hours of the securities exchange and a nighttime session that follows the trading hours of the securities exchange;
The display of the symbol includes displaying a candlestick-shaped symbol indicating the time-series price fluctuation of the stock from the nighttime session of the previous day to the daytime session before the opening of the stock on that day.