Insurers choose partners, and dance floor shrinks By: CNBC.com News July 04, 2015 at 11:28 AM EDT One of the most significant eras of consolidation in the history of the health insurance sector is underway. Will this M&A wave spur more deals? Read More >> Related Stocks: Aetna Anthem Inc Centene Corp Cigna Corp Community Health Systems Community Healthcare Trust Inc Humana Lifepoint Health Tenet Healthcare