When he sees a stock rise in price, he uses the computer to buy shares of the stock.

VOA: special.2009.04.26

If the price of shares of a stock hits bottom that might be the time to buy it.

VOA: special.2009.09.20

In seven months,the price of stock for the General Motors Corporation fell from sixty dollars to twenty-five.

VOA: special.2011.04.21

If the stock continues to rise in price in the next few minutes, the day trader sells the shares quickly to make a small profit.

VOA: special.2010.10.10

Under his leadership H-P stock doubled in price.

VOA: special.2010.08.13