柜台交易市场是场外交易市场的一种,在国外简称OTC,它是指证券商在证券交易所之外直接与投资者买卖各种未上市的有价证券所形成的市场:在场外交易市场中,随着投资者目的的多样化,交易方式也趋于多样,如在一些经济和资本流通发达国家中迅速兴起的第三市场和第四市场的交易活动,既与柜台交易市场有区别,但又不在证券交易所的场内交易,因而它们都属于场外交易市场的范畴,所以柜台交易市场仅 OTC trading market is a kind of OTC market, Abbreviated OTC abroad, it refers to the securities firms in the stock exchange directly with investors trading in a variety of unlisted securities formed by the market: in the OTC market , With the diversification of investors’ purposes, the modes of transactions also tend to be diversified. For instance, the trading activities in the third and fourth markets which are rapidly emerging in some economically and capital-circulating developed countries are not only different from the counter market, But they are not traded in the stock exchange market, so they belong to the category of over-the-counter market, so the counter market