Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga December 21, 2015 at 08:48 AM EST Targa Resources Partners LP (NYSE: NGLS) shares dipped 8.62 percent to $14.00. Credit Suisse downgraded Targa Resources Partners ... Read More >> Related Stocks: Ambarella Inc Central EUR Med A Gopro Inc Cl A