Games Yup.Check this out but these dudes play games .What Is an Alternative Trading System (ATS)? An alternative trading system (ATS) is a trading venue that is more loosely regulated than an exchange. ATS platforms are often used to match large buy and sell orders among its subscribers. The most widely used type of ATS in the United States are electronic communication networks (ECNs)—computerized systems that automatically match buy and sell orders for securities in the market.