Drug trials, upgrades boost health-care sector By: MarketWatch January 08, 2015 at 11:57 AM EST A stock rally lifted the fortunes of the health-care sector as many companies were in the black during Thursday’s trades. Read More >> Related Stocks: Actavis Plc Alexion Pharmaceuticals Biogen Idec Boston Scientific Pfizer Valeant Pharmaceuticals International, Inc. Zoetis