XEC - Centene finishes first Coty last on S&P 500 for 2018 December, 31 2018 10:28 PM Cimarex Energy Co Health care firm Centene (NYSE:CNC) is 2018's biggest winner and beauty company Coty (NYSE:COTY) the biggest loser on the S&P 500 index. More news on: Centene Corporation, Coty Inc., Advanced Micro Devices, Inc., Read more ...