Or, vice versa? From Reuters:
Shares of leading Web search company Google Inc. (GOOG.O: Quote, Profile, Research) jumped 8 percent in after-hours trading after Standard & Poor’s said the company’s stock listing would be added to the S&P 500 Index on March 31.
Actually, now it’s up more than 35 bucks. Fickle, fickle, fickle. Of course, when a company makes the S&P, it makes the index buyers, and that drives demand, and demand drives the stock up.