The Walgreens Co. (NYSE: WAG) is the largest drugstore chain in the United States. The company operates over 8,200 locations in all 50 states, the District of Columbia, Puerto Rica, and Guam. Walgreens boasts an investment grade rating of BBB from Standard and Poor’s and a long term rating of Baa2 from Moody’s. The company sells prescription and non-prescription drugs as well as general merchandise, including household products, personal care, beauty care, photofinishing, and other health and wellness solutions. A typical Walgreens store is around 14,500 square feet and offers nearly 25,000 items for sale. On average, one store brings in $8.5 million in annual sales. Walgreens was founded in Chicago, Illinois in 1901 and is currently headquartered in Deerfield, Illinois.