Many analysts view the combination of CVS and Aetna as a defensive move by the companies. CVS Health, which also recently signed an agreement with Anthem to help the insurer start its own internal pharmacy benefit manager, is looking to protect its business with Aetna as it fends off rivals like UnitedHealth Group’s OptumRx and others. Aetna, foiled in its attempt to buy Humana, is searching for new ways to expand its business.
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