WellCare Health Plans Inc. (WCG US) increased 15 percent to $44.16, a two-month high. The managed-health-care provider said it will pay $35.2 million in connection with a Medicaid fraud investigation, according to a government filing of the agreement with U.S. prosecutors. The deal signals a "catastrophic outcome is very unlikely" for the company, Oppenheimer & Co. analyst Carl McDonald said.