Key TakeawaysCentene grew its membership rolls and premium and service revenue in the third quarter, and shares surged Friday.The managed care and health insurance provider beat profit and sales estimates, and boosted its outlook.CEO Sarah London said the company navigated "a dynamic landscape" in the quarter. Centene (CNC) shares surged more than 10% Friday morning as the managed care and health insurance provider's third-quarter results easily beat estimates as it boosted its membership rolls and premium ...