Midday Movers: WMT, HRB, OCZ & More By: CNBC.com News October 10, 2012 at 12:06 PM EDT Take a look at some of Wednesday's midday movers: Read More >> Related Stocks: Amarin Corp ADR Cummins Darling International Inc Esco Technologies Inc H&R Block Helen of Troy Ltd Skywest Inc Wabco Holdings Inc Wal-Mart Stores, Inc.