The Delaware Valley contains the headquarters of twelve Fortune 500 corporations, four of which are in Philadelphia proper. The Philadelphia Stock Exchange, acquired by NASDAQ in 2007, tracks the Philadelphia semiconductor Index, known in financial circles as the SOX.[ The city is home to the headquarters of cable television and internet service provider Comcast, insurance companies Cigna, Colonial Penn, and Independence Blue Cross, food services company Aramark, chemical makers FMC Corporation and Rohm and Haas, pharmaceutical companies GlaxoSmithKline, Amicus Therapeutics, Spark Therapeutics, apparel retailers Five Below and Urban Outfitters, and its subsidiary Anthropologie, automotive parts retailer Pep Boys, and stainless steel producer Carpenter Technology Corporation. Other corporation headquarters in the city include Crown Holdings and Brandywine Realty Trust. The headquarters of Boeing Rotorcraft Systems and its main rotorcraft factory are in the Philadelphia suburb of Ridley Park; The Vanguard Group and the U.S. headquarters of Siemens Healthineers are headquartered in Malvern, Pennsylvania, a Philadelphia suburb; healthcare conglomerate AmerisourceBergen is headquartered in suburban Conshohocken, Pennsylvania; and the Campbell Soup Company and automobile manufacturer Subaru USA are headquartered across the Delaware River in adjacent Camden, New Jersey.