Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga June 03, 2015 at 08:11 AM EDT Synchronoss Technologies, Inc. (NASDAQ: SNCR) gained 17.56 percent to $50.00 in pre-market trading on rumor of potential sale. ... Read More >> Related Stocks: G-III Apparel Gp Gopro Inc Cl A Heron Therapeutics Synchronoss Technologies Inc