at CNBC.com (Aug 15, 2012)
Express Scripts (ESRX +1.9%) and Medco Health (MHS +1.2%) are joining Walgreen (WAG +5.2%) in spiking higher on the rumor that Walgreen and Express Scripts will come to terms on a new prescription-claims deal. CVS (CVS -1.1%) has sold off slightly.
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