UBS Analyst Michael Lasser Explains Why Wal-Mart Was Downgraded By: Benzinga via Benzinga December 04, 2014 at 17:44 PM EST Shares of Wal-Mart Stores, Inc. (NYSE: WMT) saw a major slump in early trading on Thursday after analysts at UBS downgraded the stock ... Read More >> Related Stocks: Wal-Mart Stores, Inc.