PROBLEM TO BE SOLVED: To provide a convenient method and system for trading at a securities trading market enabling an unspecified number of investors of securities such as stocks to access the system at all times to freely debit and credit securities such as stocks.;SOLUTION: A creditor and a debtor are registered respectively for debit and credit to participate in a net market. On the net market, i.e., on computers, when a debtor-creditor relationship is automatically established, that is, when a deal is closed, the creditor and the debtor are connected on-line and an agent goes between them. After the deal is closed, the agent identifies the creditor and/or the debtor. After the identification, money is delivered through the agent. The agent not only delivers the money but also manages a series of operations related to the debit and credit of stocks from the credit to the return of the stocks.;COPYRIGHT: (C)2004,JPO
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