Midday movers: Hess, Twitter, Valero Eneregy & More By: CNBC.com News July 30, 2014 at 12:14 PM EDT Take a look at some of Wednesday's midday movers: Read More >> Related Stocks: C.H. Robinson Worldwide Facebook Goodyear Tire & Rub Hess Corp Huntsman Corp Michael Kors Holdings Regeneron Pharmaceuticals Sanofi-Aventis S.A. ADR Sodastream Int Ltd The Rubicon Project Inc Thomson Reuters Corporation Twitter, Inc. Valero Energy Yelp Inc