Tesla was one of the best-performing stocks in the S&P 500 Monday. Centene (CNC), Elevance Health (ELV), and Molina Healthcare (MOH) shares all rose following reports President Trump would back a health care proposal extending Affordable Care Act subsidies. Carvana (CVNA) shares surged nearly 7% following an upgrade to "outperform" from "neutral" by analysts at Wedbush, who called the vehicle retailer the "new used car king.†Novo Nordisk (NVO) sank after the drugmaker said its latest drug trial was not e ...