GameStop Cuts Guidance By: MarketMinute.com Stock News January 07, 2010 at 12:47 PM EST GameStop Corp. (NYSE: GME) cut its earnings guidance for the fourth quarter as December same store sales tumbled due to continued weakness in the economy and product shortages. Shares of the video game products retailer plunged $3.82 to $20.22. Related Stocks: GameStop Corp