      This competition occurs most often in stocks that have largeoutstanding options positions. Often the price of a stock will move rightto the strike price and will close with an inside bid or ask price touchingthe strike price. The most volatile movement typically occurs in the lasttwo hours of trading, when stocks start to "run" for the strike price.Depending upon the cross currents, a stock can near one strike price, andthen take an about-face and race to a strike price five points away. Thisdoes happen, so be very careful if you decide to trade on a triple witchingday.