| 摘要 |
This invention proposes to make an online stock-market transaction tool available to users which will enable them to take the short term evolution of the stock market into consideration. The methodology of the invention is based on the monitoring of the evolution of two securities, one in view of the sale S 1 and the other in view of the purchase S 2 . When the value of the security to be sold develops positively as regards the security to purchase, in a proportion higher than a pre-defined threshold (S), the sale of the first security and the purchase of the second security are simultaneously carried out.
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