Walmart  (WMT) - Get Walmart Inc. Report is running a new price-comparison test at at least 1,200 of its U.S. stores, sources told Reuters, as the company looks to put pressure on U.S. grocery rivals Aldi and Kroger Co. (KR) - Get Kroger Co. (KR) Report

Walmart is launching the price tests across 11 Midwest and Southeastern states. 

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