US STOCKS-Wall St edges lower on UPS outlook, telecom shares rally By: Reuters: Company News July 29, 2014 at 14:50 PM EDT * Merck up as results beat expectations, but Pfizer slips Read More >> Related Stocks: AT&T Inc Aetna CenturyLink Corning Frontier Communications Herbalife Ltd Merck & Co Pfizer United Parcel Service Verizon Communications