Walgreen Company, d/b/a Walgreens, is an American company that operates as the second-largest pharmacy chain in the United States, behind CVS Health. In addition to filling prescriptions, the company offers health and wellness products, health information, and photo services. As of August 31, 2019, the company operated 9,277 stores in the United States. The company was founded in Chicago, Illinois, in 1901. Walgreens headquarters is in the Chicago suburb of Deerfield, Illinois. In 2014, the company agreed to purchase the remaining 55% of Alliance Boots that it did not already own in order to create a global business. In 2014, the two companies merged to form Walgreens Boots Alliance Inc., a new holding company. As a subsidiary of the new company, Walgreens retains its Deerfield headquarters and trades on the Nasdaq under the symbol WBA.