PBMs: Zero sum big swings in the PBM world

If you’ve been reading THCB for a while you’ll know that I’m not overall bullish on PBMs. But of course in any market if you win an account from your competitor that’s responsible for over 14% of the competitors’ earnings, your stock will go up and theirs will go down! So when Caremark won the Blue Cross Blue Shield Federal Employees’ contract away from Medco, forcing Medco to lower its 2004 outlook, Caremark stock went up 5%, while Medco’s stock is down 10%.

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