PREDICTION JUDGING METHOD, POINT CALCULATING METHOD, PREDICTION JUDGING DEVICE, POINT CALCULATING DEVICE, COMPUTER PROGRAM, AND RECORDING MEDIUM WHERE COMPUTER PROGRAM IS RECORDED

A large number of users easily participate in stock price prediction, and a portfolio concerning investment based on the prediction of each user. When a central server device (10) included in a stock price prediction evaluating system (1) receives prediction information on the user IDs, information specifying a brand whose price is to be predicted, and prediction information on variation of stock prices inputted through user terminal (U1 to Un) from Web sites installed over a network (NW), the central server device (10) start tracking the stock price of the prediction brand and creates personal pages of the users. On the basis of the stock prices acquired by the tracking, the central server device (10) calculates a point (or points) used as the precept of the objective comparative evaluation of the use's prediction contents, makes a ranking table in which the user's names are arranged in order of point, and creates a portfolio by using the ranking table that has been made.