CVS Health Corp (NYSE:CVS) shares are trading lower Thursday following reports that Blue Shield of California plans to drop CVS's Caremark as its pharmacy benefit manager.<br /><br />What To Know: Blue Shield will drop CVS and begin working with Amazon.com Inc (NASDAQ:AMZN) and billionaire entrepreneur Mark Cuban's Cost Plus Drug Company, according to a Wall Street Journal report.<br /><br />#1 Morning Stock Show To Get You Ready For The Stock Market Open, PreMarket Gainers, Earnings This Week, Economic Data & More!<br /><br />Benzinga PreMarket Prep 8:00AM ET- 9:00AM ET BenzingaTV on YouTube.
