Short Sellers Betting Against These 6 U.S. Listed Stocks By: Benzinga via Benzinga September 10, 2015 at 17:02 PM EDT SunGard's Astec Analytics looks into short-selling activity. Ambarella Inc (NASDAQ: AMBA) is it’s top pick from a securities ... Read More >> Related Stocks: Ambarella Inc Chesapeake Energy Gopro Inc Cl A