In 2021, the leading publicly traded company with headquarters in Pennsylvania was drug wholesale company AmerisourceBergen. That year, AmerisourceBergen topped the list with a revenue of about * billion U.S. dollars.
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Fortune. (June 2, 2021). Leading publicly traded companies in Pennsylvania in 2021, ranked by revenue (in billion U.S. dollars) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 31, 2026, from /statistics/315366/pennsylvania-s-top-companies-by-revenue/
Fortune. "Leading publicly traded companies in Pennsylvania in 2021, ranked by revenue (in billion U.S. dollars)." Chart. June 2, 2021. ÌÇÐÄÆÆ½â°æ. Accessed July 31, 2026. /statistics/315366/pennsylvania-s-top-companies-by-revenue/
Fortune. (2021). Leading publicly traded companies in Pennsylvania in 2021, ranked by revenue (in billion U.S. dollars). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 31, 2026. /statistics/315366/pennsylvania-s-top-companies-by-revenue/
Fortune. "Leading Publicly Traded Companies in Pennsylvania in 2021, Ranked by Revenue (in Billion U.S. Dollars)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 2 Jun 2021, /statistics/315366/pennsylvania-s-top-companies-by-revenue/
Fortune, Leading publicly traded companies in Pennsylvania in 2021, ranked by revenue (in billion U.S. dollars) ÌÇÐÄÆÆ½â°æ, /statistics/315366/pennsylvania-s-top-companies-by-revenue/ (last visited July 31, 2026)
Leading publicly traded companies in Pennsylvania in 2021, ranked by revenue (in billion U.S. dollars) [Graph], Fortune, June 2, 2021. [Online]. Available: /statistics/315366/pennsylvania-s-top-companies-by-revenue/