The three biggest pharmacy retail chains in the US are CVS Caremark Corporation (NYSE:CVS), Walgreen Company (NYSE:WAG), and Rite Aid Corporation (NYSE:RAD), in that order. CVS Caremark Corporation (NYSE:CVS) and Walgreen Company (NYSE:WAG) are both highly profitable companies; they possess a polished balance sheet and are in healthy financial shape. Rite Aid Corporation (NYSE:RAD), on the other hand is in a dire financial state. The company made subsequent losses from 2007 up until the third quarter of FY 2012; the company also has negative stock holder equity and about $6 Billion in debt, which represents nearly 75% of its enterprise value.