24 April 2017 - Pharmacy benefit manager Express Scripts Holding Co said Anthem Inc, its biggest customer and one that has sued the company over claims of being overcharged, was unlikely to renew its contract after it ends in 2019.
Express Scripts shares tumbled more than 15% in extended trading on Monday.
Anthem had sued Express Scripts in March last year, accusing it of charging too much for drugs and operational failures. It also sought the right to terminate the 10 year contract.