Abstract: An apparatus, system, and method are disclosed for trading securities. Trading software 102 receives recent market data history from a market data stream via a broker having direct access to a securities market. A trading strategy determination module is comprised of a plurality of strategies which concurrently analyze the recent market data history. Each strategy independently determines potentially profitable security positions and communicates them to an order management module which places corresponding orders via the order placement interface with the broker. An exit all time allows a user to specify a time of day, typically the daily market close, when all open positions should be exited and the plurality of strategies shut down, which is specifically intended to facilitate day trading, in which no positions are held during market closure periods.