How can I set my computer to automatically buy stock when it drops to a certain price? Over the past few weeks, stocks have gone up a lot and I believe some are overpriced. I think a few of the ones I want will go down in price. I fear that when I want to buy stock, I won't be at a computer for most of the day. I was wondering if there is some way that I can set a price that I believe it will go down to and then automatically purchase it at that price? Yes. What you do is place a limit order over your online brokerage account. You put in a limit buy price and the number of shares you want to buy. When the stock hits your limit price your order to buy x number of shares is automatically executed. You may also want to consider a stop order. A stop order is just like a limit order except that if the price hits your stop price or goes under, then your buy order is executed. Now here is a great, guerilla stock buying strategy you can use with limit orders. This is a short term trading strategy. Try and execute 1 trade every 5 to 8 trading days. Set your limit order to sell when you make a profit of 8-15% on every trade. This is the Wade Cooke strategy. He invests in rolling stocks. Finding a stock that rolls 8-12% over a short period of time, alway repeating the highs and lows. I average 35 to 60% a year with this strategy. The work comes in finding the stocks that roll. I highly recommend Wade Cooke's book which details this strategy. His book is called Wall Street Money Machine, Volume 1