| 摘要 |
The invention relates to a computer-implemented method of trading securities, a computer-readable medium carrying one or more sequences of instructions for trading securities, and a computer program product for use with a graphics display device. The program determines a reference price for the security, monitors the value of the security over time, and receives an input corresponding to a differential in the value of the security. A trigger price is determined for the security as a function of the differential and the reference price. The program liquidates the security after determining that the value of the security reaches or passes the trigger price in a first direction. After liquidating the security, the program automatically acquires at least one position in the security when the value of the security reaches or passes the trigger price in a second direction opposite to the first direction. The computer-implemented method and computer program may be modified in several ways, such as buying as many shares as possible from one account, maximizing the funds in an account with which to buy shares, enforcing a maximum allowable difference between a security's ask and bid price, or enforcing a maximum number of daily trades of a security.
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