 Shares of several health insurers rallied in trading on Friday after UnitedHealth Group Inc. UNH, 1.79 reported better-than-expected profit and revenue in the fourth quarter of 2022. Elevance Health Inc.s ELV, 2.52 stock was up 2.6, while shares of Cigna Corp. CI, 2.24 gained 2.2, and shares of CVS Health Corp. CVS, 1.21 , which owns Aetna, were up 1.1. 