Gartner
gartner.com · Consulting & advisory · Advisory
Gartner, Inc. is a leading research and advisory firm based in Stamford, Connecticut. Founded in 1979, the company is publicly traded on the New York Stock Exchange and is a member of the S&P 500.
Company facts
| Founded | 1979 (47 years) |
| Market standing | Publicly traded (NASDAQ: IT) |
| Employees | 20,000 |
| Headquarters | Stamford, United States |
| Trusted networks on Proven | 2 investor, bank and government networks offer Gartner to their members |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
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Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.