Bank One Corporation

Mid State Level Public Record

Editorial estimate, not verified fact — Disclaimer

Major American commercial bank holding company (merged with JPMorgan Chase in 2004)

Data Confidence: 84% · Sources: 5 · Last Updated: Sep 18, 2026

Net Worth ▲: $58.0B
Reach ▲: 7.5M people
Power ▲: Prior to its 2004 merger, Bank One commanded approximately $290 billion in assets, operated over 1,800 branches across 14 states, and managed major consumer, commercial, and credit card banking operations nationwide.
Influence ▲: Bank One's expansion through key acquisitions like credit card giant First USA significantly impacted U.S. retail banking and payment processing standards.
Network ▲: Led by Wall Street veteran Jamie Dimon and former CEO John B. McCoy, Bank One possessed deep institutional ties across corporate America, major financial centers, and regulatory bodies.
Legacy ▲: The 2004 combination of Bank One and JPMorgan Chase created a $1.1 trillion banking institution and brought Jamie Dimon into the executive leadership of what became the world's largest bank by market capitalization.
Trajectory ▲: Stable — first assessment on record.

About

Bank One Corporation was a major American commercial bank holding company headquartered in Chicago, Illinois. Formed through the 1998 merger of Banc One Corporation and First Chicago NBD, it grew into the sixth-largest bank in the United States and a major credit card issuer. Under the leadership of CEO Jamie Dimon from 2000 to 2004, Bank One reorganized its operations before merging with JPMorgan Chase & Co. in a $58 billion transaction in July 2004.