Catamaran revenue miss, contract concerns weigh on shares

(Reuters) – Pharmacy benefit manager Catamaran Corp’s first-quarter revenue miss and concerns about the renewal of a major contract sent its shares down as much as 11 percent. Investors were looking for clarity on Catamaran’s contract with Medicare provider HealthSpring, which was acquired by U.S. health insurer Cigna Corp . The contract, which brought in about a third of Catamaran’s 2012 revenue of $9.94 billion, is up for renewal this year. …