Blood-thinner study shakes Big Pharma stocks By: MarketWatch June 23, 2011 at 11:33 AM EDT Big Pharma stocks are moving on the release of a key study for Bristol-Myers Squibb and Pfizer’s new blood thinner apixaban. Read More >> Related Stocks: Bayer Aktienges ADR Bristol-Myers Squibb Johnson & Johnson Pfizer Sanofi-Aventis S.A. ADR