US stocks open higher on earnings; Merck up after results By: CNBC.com News April 29, 2014 at 09:30 AM EDT U.S. stocks climbed on Tuesday after a round of better-than-expected quarterly earnings from companies including Merck. Read More >> Related Stocks: AFLAC Actavis Plc Agnico-Eagle Mines Akamai Technologies American Tower Corp A Archer-Daniels-Midland Boston Beer Company Boston Scientific Bristol-Myers Squibb CVS Health Corp Cardinal Health Cigna Corp Cit Group Inc Coach ConocoPhillips Embraer-Empresa Brasileira DE Aeronautica ADR Estee Lauder Co Expedia Exxon Mobil Flextronics Intl Ltd Generac Holdings Inc Gsk Plc ADR International Paper Marathon Petroleum Martin Marietta Materials MasterCard Merck & Co MetLife Newell Rubbermaid Nokia Corp ADR Noodles & Company Royal Dutch Shell Cl B ADR Sanofi-Aventis S.A. ADR Seagate Technology Plc Sempra Energy Sentinelone Inc Cl A Shutterfly Inc Southern Co Thomson Reuters Corporation Time Warner TransCanada Corporation Twitter, Inc. Willis Towers Watson Public Ltd Wisconsin Energy Corp Yelp Inc eBay