We recently published 10 Big Names With Painful Declines. Centene Corp. (NYSE:CNC) was one of the worst performers on Tuesday. Centene Corp. snapped a three-day winning streak on Tuesday, slashing 10.26 percent to finish at $41.53 apiece as investors soured on the 2027 Medicare Advantage payment updates, which saw flat funding for insurers. According to the Centers for Medicare and Medicaid Services (CMS), net average payment is projected to increase by only 0.09 percent, far lower than the 4 to 6 perce ...