A tradingsystem gives you a system to trade a stock. To trade a stock means to buy and sell this stock according to the underlying tradingsystem.
Many traders use tradingsystems in order to beat the stock market.
Using a tradingsystem for a stock doesn't guarantee big profit, but can help to increase the profit without a tradingsystem. Of course, trading stocks with a tradingsystem is no guarantee to make big profits. Tradingsystems based on artificial intelligence bring a new perspective in trading stocks. Artificial intelligence is used at AI-Trader to form a tradingsystem for stocks.