GameStop Tumbles After Wal-Mart Cuts Prices By: MarketMinute.com Stock News December 02, 2009 at 17:51 PM EST Shares of video game retailer GameStop Corp. (NYSE: GME) tumbled $1.97 to close at $21.87 after Wal-Mart Stores Inc. (NYSE: WMT) cut prices on the top 25 video games. Wal-Mart stock slipped 18 cents to close at $54.57. Related Stocks: GameStop Corp Wal-Mart Stores, Inc.