JP2003030562A - System and method for purchasing stocks and bonds - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and method for purchasing stocks and bonds capable of reducing a huge time and labor which used to be required for applying for stocks and bonds-secured loan by a customer in a conventional manner by allowing a stock company to deposit stocks and bonds owned by the customer as a security according to an instruction from the customer, and to instantaneously load the customer according to the security estimated value. SOLUTION: This system for purchasing stocks and bonds enabling purchase of new stocks and bonds by using stocks and bonds as a security is provided with a security processing means for setting a security on the stocks and bonds selected to the customer among the stocks and bonds owned by the customer and an adding means for adding a sum equivalent to the security estimated value of the stocks and bonds subjected to the security processing to a stock buyable sum.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a securities purchase system and purchase method.

[0002]

2. Description of the Related Art Conventionally, in order to raise funds with securities such as stocks and credits as collateral, securities brought to securities institutions such as securities mortgage loans are brought in and securities are applied. Had to do.

[0003]

[Problems to be Solved by the Invention] However, it is a great deal of time and effort for a customer to bring in securities held by a financial institution such as securities finance that handles securities collateral loans and apply for a loan. Takes.

The present invention has been made in view of the above circumstances. According to an instruction from a customer, securities owned by the customer are deposited as collateral by a securities company that manages the securities, and the collateral is evaluated. An object of the present invention is to provide a securities purchasing system and a purchasing method capable of reducing the enormous amount of time and labor conventionally required for a customer to apply for a securities mortgage loan, since an instant loan is made according to the amount. And

[0005]

In order to achieve the above object, the present invention is a securities purchase system that enables a customer to purchase new securities with securities as collateral. Of these, there is provided collateral processing means for setting collateral on securities selected by the customer, and addition means for adding the same amount as the collateral valuation value of the securities subjected to the collateral processing to the stock purchase possible amount. It is characterized by

[0006] Further, among the securities for which collateral has been set by the collateral processing means, collateral clearing brand selection means for allowing a customer to select the brand and quantity of any securities for clearing collateral, and the collateral clearing brand selection The total amount of collateral clearing processing means for liquidating the collateral of the securities selected by the means and the total amount of the collateral price and interest of the securities whose collateral has been cleared by the collateral clearing processing means is deducted from the stock purchase possible amount. And a deduction means.

[0007] Further, among the securities for which collateral has been set by the collateral processing means, sale clearing issue selection means for allowing the customer to select the issue and quantity of any securities for which collateral is cleared by sale, and the sale clearing If you wish to liquidate the collateral of securities collateralized by the stock selection means, the amount you wish to sell the collateralized securities, and the collateral price of the securities plus interest and transaction fees. As a result of the comparison by the first comparing means for comparing with the first comparing means, if the desired amount of sale of securities desired to be sold and cleared of collateral is larger, the sale of the securities designated by the customer If the order processing means for placing an order in the market and the sell order made by the order processing means are executed within the valid period of the order, the transaction is settled, and the collateral price is calculated from the contract sales amount. And characterized in that it comprises a means for adding the amount obtained by subtracting the interest and trading commission to stock possible purchase amount.

Further, as a result of the comparison by the first comparison means, when the desired sale amount of the securities for which the collateral is sold and cleared is smaller, the desired sale amount of the securities for which the collateral is sold and cleared and the The second comparison means for comparing the sum of the securities purchaseable amount of the customer and the sum of the collateral price of the securities with the interest and the sales transaction fee, and the second comparison means. As a result, if the sum of the amount of securities desired to be sold for collateral clearing and the customer's available share buy-back amount is larger, an order to sell the securities specified by the customer is placed in the market. The order processing means for performing the order and the sell order made by the order processing means are
If the contract is executed within the valid period, the transaction is settled, and the amount obtained by subtracting the amount obtained by adding the interest amount and the transaction transaction fee to the collateral price is subtracted from the amount obtained by adding the contract execution amount and the stock purchase possible amount. It is characterized by comprising means for calculating and displaying on the stock purchase possible amount.

In addition, in a securities purchasing method that enables new securities to be purchased with securities as collateral, collateral processing for setting collateral on securities selected by the customer among securities held by the customer. A security out of the securities with collateral set by the collateral processing procedure, which includes a procedure and an addition procedure for adding an amount equal to the collateral evaluation value of the collateralized securities to the stock purchase possible amount. The collateral clearing issue selection procedure that allows the customer to select the issue and quantity of any securities to be cleared, the collateral clearing processing procedure that clears the collateral of the securities selected by the collateral clearing issue selection procedure, and the collateral clearing procedure The collateral is set up by the collateral processing procedure, including a deduction procedure for subtracting the total amount of the collateral price and interest of securities whose collateral has been settled by the processing procedure from the stock purchase possible amount Of the securities that have been collateralized by the sale-clearing issue selection procedure and the sale-clearing issue selection procedure that allows the customer to select the issue and quantity of any desired securities to be liquidated When the liquidation of sale is desired, the first comparison procedure for comparing the desired amount of sale of securities with collateral and the amount of collateral price of the securities plus interest and trading transaction fee,
As a result of the comparison by the first comparison procedure, if the desired amount of sale of securities desired to be sold and cleared of collateral is larger, an order processing procedure for placing a sell order of securities designated by the customer in the market, If the sell order made by the order processing procedure is executed within the valid period of the order, the transaction is settled, and the amount of the contract is deducted from the collateral price, interest and trading transaction fee And a step of adding to the possible amount, the result of the comparison by the first comparison procedure,
If the desired amount of securities sold for liquidation of collateral is smaller than the desired amount of securities sold, the amount of securities desired for liquidation of collateral plus the amount of securities available for purchase by the customer and A second comparison procedure for comparing the collateral price of the securities with an amount obtained by adding interest and a transaction transaction fee, and as a result of the second comparison procedure, the desired sale amount of the securities for which collateral sale and liquidation are desired and its If the sum of the customer's share purchase possible amount is larger, the order processing procedure for placing a sell order for securities specified by the customer in the market, and the sell order made by the order processing procedure However, if the contract is executed within the valid period of the order, the transaction is settled, and the amount obtained by adding the selling contract amount and the stock purchase possible amount is subtracted from the amount obtained by adding the interest and the transaction transaction fee to the collateral price. Calculate the amount and stock And characterized in that it comprises the steps to be displayed on the attached amount.

According to the present invention, the securities owned by the customer are held as collateral by the customer's instruction as collateral, and the loan is instantly provided according to the valuation value of the collateral. In the past, the amount of time and labor required for customers to apply for securities-backed loans will be reduced. On the other hand, securities companies can expect interest income from securities collateral financing in addition to securities transaction commission income.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a securities purchasing system and a purchasing method according to the present invention.
The securities purchase system and purchase method according to the present embodiment are
The customer information terminals 10-1 to 10-n, the securities settlement server 20, and the stock market 30 are included.

The information terminals 10-1 to 10-n of each customer are
It is connected to the securities settlement server 20 via a data transmission line such as a public line network.

The securities settlement server 20 is connected to one or a plurality of securities trading servers installed in the stock market 30 via a data transmission line such as a private line or a public line network.

Next, the flow of the embodiment of the present invention will be described with reference to the flowcharts of FIGS. FIG. 2 is a diagram showing a flow of a collateral process for receiving a loan with securities held as collateral in the embodiment of the present invention.

First, when a customer presses a securities mortgage loan application button using a customer information terminal connected to a securities settlement server via a data transmission line such as a public line network (step S501), The securities settlement server displays the collateral securities selection screen of FIG. 7 in which the securities name, securities code, trading market, quantity, market value, and collateral evaluation amount of securities held by the customer are described (step S
502).

When the customer selects any of the securities displayed on the collateral security selection screen, the securities settlement server determines the number of securities to be collateralized this time within the quantity of securities held by the customer. The customer is requested to input the personal identification number (step S503).

Therefore, when the number of securities to be collateralized this time and the security code of the brand selected by the customer are input,
The securities settlement server displays a confirmation screen for confirming whether the input content is correct, and when the customer confirms the content confirmation button is pressed (step S50).
4) The securities settlement server performs collateral processing to set collateral on securities designated by the customer (step S).
505).

According to the collateral evaluation rate and the interest rate table shown in FIG. 6, collateral evaluation at the time of collateral processing is based on the TSE 2 stocks selected on the collateral stock selection screen (stock code 7573, Tsuruha).
Since it is a stock of the department, it is 70% of the market price (1720 yen), and the collateral evaluation amount when 1000 shares are set as collateral is 1
000 shares x 1720 yen x 0.7 = 1204000 yen, and interest will be 4% (annual interest) of the collateral price.

The collateral valuation rate and interest can be arbitrarily set by the securities company, and are not limited to the valuation rate and interest rate shown in FIG. 6, and may be any rate set for each market or the same rate.

[0020] In addition, securities which cannot be set as collateral among securities (for example, par value shares, some stocks, etc.) may be provided due to the circumstances of a securities company.

After that, the securities that have been collateralized are
As shown in the image of the portfolio overview screen in Fig. 8, the owned stock column is moved to the collateral stock column, and the stock name, stock code, trading market, quantity, fair value, collateral price, interest, collateral price and interest Is displayed (step S5
06).

Then, the same amount as the collateral evaluation amount of the securities for which collateral processing has been performed is added to the stock purchase possible amount, as shown in the image of portfolio overview screen in FIG.
The collateral evaluation amount is displayed in the form of cyber money in () at the bottom of the available share purchase amount column (step S
507).

Since cyber money is a fund for purchasing securities, the customer may not be able to withdraw the cyber money. In this case, the amount that can be withdrawn is the amount obtained by subtracting the amount of cyber money from the amount that can be purchased.

Therefore, in this case, the cyber money is
Used only for the purchase of securities.

Further, securities purchased using cyber money may not be provided as collateral.

Next, FIG. 3 is a diagram showing a flow of securities purchase processing in the embodiment of the present invention.

First, when the customer purchase application button is pressed by the customer's information terminal connected to the securities settlement server via a data transmission line such as a public line network (step S508), The securities settlement server displays a purchase brand search screen which can be designated by the customer by inputting the brand name or brand code of the brand desired to be purchased and pressing the search button (step S509).

When the customer inputs any stock name or stock code on the purchase stock search screen and presses the search button, the securities settlement server searches for the entered stock (step S510). Displays the stock name, stock code, trading market, current price, yesterday's close, yesterday's closing price, ask price, ask price, bid price, bid quantity, open price, high price, low price, volume of the stock specified by the customer At the same time, the purchase amount, purchase conditions (limit price / market, execution conditions, etc.) and the customer's personal identification number are requested to be input (step S511).

Therefore, when the customer inputs the purchase quantity, the purchase condition (limit price / market, execution condition, etc.) and the personal identification number,
The securities settlement server displays a confirmation screen for confirming whether the input content is correct, and when the customer confirms the content confirmation button (step S51).
2) The securities settlement server performs ordering processing for placing an order to buy a securities specified by the customer in the market (step S513).

After that, the buy order subjected to the order processing is, as shown in the stock order status screen image diagram of FIG. 9, until the contract, the brand name, brand code, trading conditions, Order quantity, limit order price, contract quantity, order date and time,
The order effective date, market, reception number, and status are displayed (step S514). If contracted, move to the executed column. If not executed within the order effective period, move to canceled / expired column. .

Then, the total amount of the purchase order amount and the trading transaction fee is reduced from the stock purchase possible amount (step S
515).

At this time, the total amount of the purchase order amount and the trading transaction fee is also reduced from the cyber money amount in the lower part () of the stock purchase possible amount column.

However, when the amount of cyber money is negative in the calculation due to this reduction processing, it is displayed as 0 yen.

The securities server settles the transaction if the order processing (step S513) is executed within the valid period of the order, and if not executed, the buy order is invalidated and reduced. Restore the stock purchase possible amount.

At this time, the reduced cyber money amount is also restored.

FIG. 4 is a diagram showing the flow of the collateral clearing process when the collateral is cleared without selling the collateral stock in the embodiment of the present invention.

First, when the customer presses a collateral clearing application button using the customer's information terminal connected to the securities settlement server via a data transmission line such as a public line network (step S516), securities settlement is performed. The server stores each stock name, stock code, trading market, quantity, market value collateral valuation amount, collateral price, interest, total amount of collateral price and interest, market value collateral valuation value of securities collateralized by the customer. A collateral clearing screen in which the difference from the total amount is described is displayed (step S517).

When the customer selects any of the issues displayed on the collateral clearing screen (step S518),
The securities settlement server requests input of the number of securities to be settled this time and the personal identification number of the customer within the quantity of securities pledged by the customer (step S519).

Therefore, when the number of securities to be cleared this time and the security code of the security selected by the customer are input,
The securities settlement server displays a confirmation screen for confirming whether the input content is correct, and when the customer confirms the content confirmation button is pressed (step S52).
0), the securities settlement server performs a collateral clearing process for clearing the collateral setting of the securities designated by the customer (step S521).

The collateral clearing process is a process of subtracting the total amount of the collateral price and interest from the stock purchase possible amount that does not include the amount of cyber money.

Securities that have undergone collateral clearing processing are shown in FIG.
The owned stock column shown in the portfolio overview screen image diagram is moved to the collateral stock column (step S522), and the amount in the stock purchase possible amount column is changed based on the collateral clearing process (step S523) and displayed.

In the collateral clearing process, a part of the collateral securities may be cleared, or may be cleared for each collateral process.

FIG. 5 is a diagram showing the flow of the collateral sale clearing process when the collateral stock is sold and the collateral is cleared in the embodiment of the present invention.

First, when the customer presses the collateral sale clearing application button using the information terminal of the customer connected to the securities settlement server via the data transmission line such as the public line network (step S524), the securities are sold. The payment server is the name of each security that is collateralized by the customer.
Displays the collateral sale clearing screen that shows the stock code, market, quantity, market price collateral valuation amount, collateral price, interest, total amount of collateral price and interest, and difference between market price collateral valuation amount and total amount ( Step S525).

When any of the stocks displayed on the collateral sale clearing screen is selected by the customer (step S52)
6) The securities settlement server requires the customer to input the number of securities that he / she wants to sell and clear the collateral within the quantity of securities collateral provided by the customer and the customer's personal identification number ( Step S527).

Therefore, when the customer inputs the number of securities to be liquidated for collateral sale and the security number of the selected stock, the securities settlement server causes the securities settlement server to sell the securities desired to be sold and cleared (collateral sale amount). A first comparison is performed to compare the limit X quantity) with the amount (collateral price + interest + sales transaction fee) obtained by adding interest and sales transaction fee to the collateral price of the securities (step S528).

As a result of the comparison by the first comparison, if the desired sale amount (selling limit X quantity) of the securities for which the collateral sale and settlement is desired is larger, the securities settlement server
When a confirmation screen for confirming whether the input content is correct is displayed and the customer confirms the content confirmation button is pressed (step S529), the selling order of the securities designated by the customer is placed in the market. An ordering process for placing an order is performed (step S530).

After that, when the sell order for which the order processing has been executed is contracted within the order valid period (step S531),
Settle the transaction, deduct the collateral price, interest and trading transaction fee from the contracted amount (contracted amount-collateral price-interest-selling transaction fee) and add the remaining amount to the available share purchase amount. (Step S532).

After that, the securities that have undergone collateral sale clearing processing are deleted from the collateral stock column shown in the portfolio overview screen image diagram of FIG. 8 (step S533).

If the sell order for which the order processing has been performed is not executed within the order valid period, the transaction is invalidated.

The securities settlement server sets the desired selling amount (selling limit X quantity) of securities desired to be sold and cleared by collateral,
The amount (collateral price + interest + transaction transaction fee) obtained by adding interest and transaction transaction fee to the collateral price of the securities is compared (step S528), and as a result of the first comparison, the interest rate is added to the collateral price. If the sum of the transaction price and the transaction transaction fee (collateral price + interest + transaction transaction fee) is larger, the securities settlement server then proceeds to sell the securities that you want to sell and clear the collateral (selling amount). Limit X quantity)
And the customer's available share purchase amount (selling limit X quantity + available share purchase amount), and the collateral price of the securities plus interest and trading transaction fee (collateral price +
A second comparison is performed to compare interest + sales transaction fee) (step S534).

As a result of the comparison by the second comparison, when the amount obtained by adding the interest and the transaction transaction fee to the collateral price (collateral price + interest + transaction transaction fee) is larger, the securities settlement server: A collateral sale clearing screen is displayed (step S525).

On the other hand, as a result of the comparison by the second comparison,
If the sum of the desired sale price (selling price X quantity) of the securities desiring liquidation of collateral (selling limit X quantity) and the possible purchase price of the stock of the customer (selling limit X quantity + possible stock purchase price) is larger The securities settlement server displays a confirmation screen for confirming whether the input contents are correct, and when the contents confirmation button indicating that the contents have been confirmed is pressed by the customer (step S535), it is designated by the customer. Ordering processing is performed to place an order to sell securities on the market (step S536).

After that, when the sell order for which the order processing is performed is executed within the order valid period (step S537),
Settle the transaction and add interest and sales transaction fee to the collateral price from the sum of the contract sales amount and the stock purchase possible amount (sales contract amount + stock purchase possible amount) (collateral price + interest + Trading transaction fee) (subscription contract amount + stock trading fee-collateral price-interest-trading transaction fee), and the calculated amount is displayed in the stock purchase possible amount (step S5).
38).

After that, the securities that have undergone the collateral sale clearing process are deleted from the collateral stock column shown in the portfolio overview screen image diagram of FIG. 8 (step S533).

If the sell order for which the order processing has been performed is not executed within the order valid period, the transaction is invalidated.

In the collateral sale clearing process, a part of the collateral securities may be cleared, or may be cleared for each collateral process.

The customer's information terminal described in this embodiment is not limited to a personal computer, but may be an information terminal such as a mobile phone connectable to the Internet.

Further, the securities settlement server described in this embodiment displays a web page on the Internet,
It may be a web server for trading securities.

According to this embodiment, the securities owned by the customer are held as collateral by the customer's instruction as collateral, and the loan is instantly provided according to the valuation value of the collateral. It is possible to reduce the enormous amount of time and labor conventionally required for customers to apply for a securities mortgage loan.

Therefore, for the customer, there is a practical effect that the customer can receive a loan of the required amount at a necessary time and can use the fund for the purchase of new securities.

On the other hand, a securities company has a practical effect that interest income from securities collateral financing is included in addition to securities transaction commission income.

[0063]

As described above, according to the present invention, the securities owned by the customer are deposited as collateral by the customer's instruction as collateral, and the collateral valuation amount is applied in accordance with the collateral evaluation amount. Since the loan is made instantly, it is possible to reduce the enormous amount of time and labor conventionally required for the customer to apply for the securities mortgage loan. Therefore, the customer
You can get the necessary amount of money at the right time and use the money to purchase new securities.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a securities purchasing system and a purchasing method according to the present invention.

FIG. 2 is a diagram showing a flow of collateral processing for receiving a loan with collateral held by owned securities in an embodiment of the present invention.

FIG. 3 is a diagram showing a flow of securities purchase processing in an embodiment of the present invention.

FIG. 4 is a diagram showing a flow of collateral clearing processing when collateral clearing is performed without selling collateral shares in the embodiment of the present invention.

FIG. 5 is a diagram showing a flow of a collateral sale clearing process when the collateral shares are sold and the collateral is cleared in the embodiment of the present invention.

FIG. 6 is a collateral evaluation rate and an interest table in the example of the present invention.

FIG. 7 is an image diagram of a collateral issue selection screen on a securities trading website of a securities company in an embodiment of the present invention.

FIG. 8 is an image diagram of a portfolio overview screen of a securities trading website of a securities company in an embodiment of the present invention.

FIG. 9 is an image diagram of a stock order status screen of a securities trading website of a securities company in an embodiment of the present invention.

[Explanation of symbols]

10-1 to 10-n ... Customer information terminal 11-1 to 11-n ... Customers 20 ... Securities settlement server 21 ... Securities company 30 ... Stock market

Claims (5)

[Claims] [Claim 1] A collateral process for setting collateral for securities selected by a customer, among securities held by a customer, in a securities purchase system capable of purchasing new securities with the securities as collateral. A securities purchase system comprising: means and an addition means for adding an amount equal to the collateral evaluation amount of the security-processed securities to the stock purchase possible amount. 2. The securities purchasing system according to claim 1, wherein the security that allows the customer to select the issue and quantity of any securities for which the collateral is settled among the securities for which collateral has been set by the collateral processing means. Total of collateral price and interest of securities for which collateral has been cleared by the collateral clearing processing means, clearing stock selection means, collateral clearing processing means for clearing collateral of securities selected by the collateral clearing stock selection means A securities purchase system comprising: a means for subtracting the amount of money from the stock purchase possible amount. 3. The securities purchasing system according to claim 1 or 2, wherein, of the securities with collateral set by the collateral processing means, the customer can select the issue and quantity of any securities desired to be liquidated by selling. If you want to clear the sale of securities collateralized by the sale-clearing issue selection means and the sale-clearing issue selecting means to be selected, the desired amount of sale of the collateralized securities and the As a result of the comparison by the first comparing means for comparing the collateral price with the amount of interest and the transaction transaction fee and the first comparing means, the desired sale amount of securities for which the collateral is sold and cleared is larger. In this case, when the order processing means for placing a sell order of securities designated by the customer in the market and the sell order made by the order processing means are executed within the order valid period. , Securities purchasing system that characterized in that it comprises means for the transaction to settle, adding the amount of money obtained by subtracting the collateral price and interest with the buying and selling transaction fee from the sales contract constant amount of money to the stock purchase amount available, the. 4. The securities purchase system according to claim 3, wherein, when the result of the comparison by the first comparison means is that the desired amount of securities to be sold and cleared is smaller, the collateral is further sold. The second amount which compares the amount obtained by adding the desired amount to sell the securities desired to be liquidated and the amount available for purchase of the securities of the customer and the amount obtained by adding the interest and the transaction fee to the collateral price of the securities. If the result of the comparison means and the second comparison means is that the sum of the desired sale amount of the securities desiring collateral sale clearing and the customer's available share purchase amount is larger, designated by the customer If the order processing means for placing a sell order for the sold securities in the market and the sell order made by the order processing means are executed within the valid period of the order, the transaction is settled and the sales contract amount is set. Available share purchase amount Securities purchase system that characterized in that it comprises means for displaying the calculated to stock possible purchase amount the amount of money obtained by subtracting the amount of money obtained by adding the interest and trading fees as collateral price from the amount obtained by adding the, the. 5. A collateral process for setting collateral for securities selected by a customer, among securities held by a customer, in a securities purchasing method that enables purchase of new securities with securities as collateral. Of the securities with collateral set by the collateral processing procedure, a procedure and an addition procedure of adding an amount equal to the collateral evaluation value of the collateralized securities to the stock purchase possible amount, A collateral clearing issue selection procedure that allows the customer to select the issue and quantity of any securities for which collateral is cleared, a collateral clearing processing procedure that clears the collateral of the securities selected by the collateral clearing issue selection procedure, and the collateral The collateral is set by the collateral processing procedure, including a deduction procedure for subtracting the total amount of the collateral price and interest of the securities whose collateral has been cleared by the liquidation processing procedure from the stock purchase possible amount. Of the securities that were collateralized by the sale-clearing issue selection procedure and the sale-clearing issue selection procedure that allows the customer to select the issue and quantity of any desired securities for which the collateral is cleared by sale. When the liquidation of sale is desired, the first comparison procedure for comparing the desired sale amount of securities with collateral and the collateral price of the securities plus interest and transaction fees, As a result of the comparison by the comparison procedure of 1, when the desired amount of sale of securities for which liquidation of collateral is desired to be settled is larger,
If the order processing procedure for placing a sell order for securities specified by the customer in the market and the sell order executed by the order processing procedure are executed within the valid period of the order, the transaction is settled and the sale is completed. A security that includes a procedure of adding an amount obtained by subtracting a collateral price, interest, and a transaction transaction fee from a contracted amount to a stock purchase possible amount, and as a result of the comparison by the first comparison procedure, desires to sell and clear collateral. If the desired amount to sell is smaller than the desired amount to sell the securities for which the collateral will be sold and liquidated, and the possible purchase amount of the securities of the customer, the interest on the collateral price of the securities will be calculated. As a result of the second comparison procedure of comparing the amount added with the sales transaction fee and the second comparison procedure, the desired amount of sale of securities desired to be liquidated for collateral sale and the possible share purchase amount of the customer Of the sum of Is large, the order processing procedure for placing a sell order for securities specified by the customer in the market, and the sell order made by the order processing procedure, if the contract is executed within the order valid period, Procedure to settle the transaction, calculate the amount obtained by subtracting the amount obtained by adding the interest and the transaction transaction fee to the collateral price from the amount obtained by adding the contract execution amount and the available share purchase amount, and displaying it in the available share purchase amount. A method for purchasing securities, comprising: