This occurs when a stock hits support in the form of an old high, a moving average, a trend line, or a combination of these, and moves up sharply. It is like dropping a ball onto a concrete sidewalk-the sidewalk is hard support and the ball bounces sharply. Not all support is strong enough for a bounce-we look for old tops (highs on the way up), breakout points (they act as resistance until the breakout-if the breakout is on good volume, it should act as support and give you a bounce). If money flow is good and the market is not tanking, we usually see a bounce off of this solid support.