Stock selling/purchasing system and stock selling/purchasing method

摘要

Means for calculating a market value of a stock, means for calculating a market value of a stock, means for calculating a total amount of a loan from a loan amount and interest, Means for calculating a retention rate of a stock in the total loan amount and market capitalization, means for storing a target retention rate of a stock, means for displaying the information when the retention rate is equal to or higher than a target retention rate, ), A purchaser terminal 2, and a communication network 3 connecting them, and a stock trading method using the same.