
An automated trading system (ATS) is a computer trading program that automatically submits trades to an exchange. Automated trading systems are often used with other forms of electronic trading, such as electronic communication network, `dark pools` and algorithmic trading. As of the year 2010 more than 70% of the stock shares traded on the NYSE.....
Found on
http://en.wikipedia.org/wiki/Automated_trading_system

Screen-based trading system, facilitating a market in which participants can come together to buy and sell securities.
Found on
https://www.encyclo.co.uk/local/21550
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