Same day shares slid 4% following a slashed profit forecast from its U.S. parent WMT.N. Updates with additional information MEXICO CITY, July 26 (Reuters) - Walmart's Mexico unit on Tuesday said its second-quarter net profit rose 11.55% from the year-earlier period, citing "sustainable growth" across all regions and outdoing analyst expectations at a time of swelling inflation. In Mexico, the retailer has vowed to work with suppliers and use other strategies to drive prices down as inflation ticks up, and analysts said they expected costs to put pressure on margins.