The present invention relates to management of transactions of securities or the like. More specifically, the present invention relates to a social trading method and a social trading system applying ranking information which enables a plurality of users to have relationship with each other through a social network and to perform an order after receiving trading information of a user who obtained a good result, determines a certain ranking with respect to leader traders who provide trading information to other users, and provides the ranking, and to enables trading information of leader traders who had good results to be included. According to the present invention, order information is transmitted from a client terminal, connected to a server of a securities company through a network, to the server of the securities company. Trading information in accordance with trading in a stock exchange market connected to the server of the securities company is provided by the server of the securities company and is displayed on a screen of the client terminal. The client terminal of a leader trader, a user providing trading information to other users, transmits the trading information of the leader trader to a social trading information providing server. The social trading information providing server transmits the trading information of the leader trader to another client terminal of a user who requests the trading information of the leader trader.;COPYRIGHT KIPO 2017
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