| 摘要 |
PROBLEM TO BE SOLVED: To provide a method, a device, and a system for investment which never exposes a customer's invested fund to danger such as falling below par corpus, can obtain large profit, and are attractive to both the customer and a financial institution. SOLUTION: By this investing method, part or the whole of interest that the financial institution set for the investment capital that the customer invests is allotted as an investment capital to a purchase of an option based upon the prediction of the customer to a specific phenomenon in a specific period and a purchase of an option is repeated in a specific predetermined period. |
