T-Mobile, Yelp jump; Sony, Avon Products fall By: MarketWatch May 01, 2014 at 08:51 AM EDT Shares of T-Mobile US Inc. and Yelp Inc. jump in premarket trade Thursday while U.S.-listed shares of Sony Corp. and Avon Products Inc. decline. Read More >> Related Stocks: Avon Products Ford Motor Sony Corp Yelp Inc