As of my last knowledge update in September 2021, JPMorgan Chase & Co. is one of the largest and most prominent companies headquartered in New York City. JPMorgan Chase is a multinational financial services and banking institution, IT company New York considered one of the “big four” banks in the United States. It offers a range of financial services, including investment banking, asset management, consumer banking, and more.

However, please note that the status of the largest company can change over time due to factors such as market fluctuations, mergers and acquisitions, and changes in business performance. It’s recommended to check current and reliable sources for the most up-to-date information on the largest companies in New York City.