Medco Health Solutions Inc (MHS.N) believes the U.S. pharmacy benefit manager has a "very good chance" of renewing its contract with UnitedHealth Group Inc (UNH.N), Medco's biggest account, the company's chief executive officer said on Thursday. The UnitedHealth contract, which represents about 17 percent of Medco's overall revenue and a "mid-to-high" single digit percentage of profits, is scheduled to lapse in January 2013. Wall Street is closely watching the contract, and some analysts speculate the health insurer may end its arrangement with Medco in order to bring more pharmacy services in house.
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