Abstract: The present invention provides a net trade advice system in which not only data such as stock prices is presented, but also asset management advice can be obtained as if a user is served by a professional adviser at the window, and transactions can be made. The present invention provides an asset management advice system that comprises a database storing purchase and sale signals relating to assets to be traded, which signals are calculated based on data such as stock prices, foreign exchange market prices and commodities-futures prices, the amount of remains (such as the amount of issuance of securities and the amount of existence of commodities), and the volume of business (such as trading volume and purchase and sale prices) of assets to be traded.