Apple's U.S. Smartphone Market Share Grows; Facebook Top App By: Benzinga via Benzinga May 11, 2015 at 08:08 AM EDT ComScore, a global leader in digital media analytics, reported last week key data relating to the U.S. smartphone industry for March ... Read More >> Related Stocks: Amazon.com Apple Bio-Techne Corp Digital Turbine Facebook Google, Inc. Htc Purenergy Inc Microsoft Pandora Media Inc Samsung Electronics Ltd Twitter, Inc.