Obama’s re-election rallied shares of HCA Holdings Inc., the largest for-profit hospital company, by 9.4 percent the day following the election, while Community Health Systems Inc., which owns Lutheran Health Network, and Tenet Healthcare Corp. also gained on prospects for millions of newly insured patients being added to their admission rolls. UnitedHealth, the largest U.S. medical insurer, fell 3.8 percent Nov. 7, and Indianapolis-based WellPoint Inc. and Humana Inc. declined as the industry faces profit limits and new taxes to help pay for the coverage expansion.