Wal-mart de Mexico S A B de C V (NASDAQ:WMMVY) was downgraded by Zacks Investment Research from a “buy” rating to a “hold” rating in a report issued on Wednesday. According to Zacks, “WAL-MART de Mexico-ADR operates 587 commercial units, including self-service stores, department, and restaurants. “ Shares of Wal-mart de Mexico S A B […]