Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga June 16, 2015 at 08:24 AM EDT Avalanche Biotechnologies Inc (NASDAQ: AAVL) shares declined 45.47 percent to $21.20 in pre-market trading following mixed AVA-101 ... Read More >> Related Stocks: Barrick Gold Corp Dbv Technologies ADR Transocean Ltd Twitter, Inc.