Gartner, Inc. (IT) Shareholders & Insider Trades
Gartner shareholders at a glance
The largest holder of Gartner stock is BAMCO, Inc., with 7.6 million shares (12.04% of the company), worth about $1.51 billion as of September 25, 2026. The 10 largest holders together own 63.4%.
In Q2 2026, 689 institutional holdings reports listed shares worth $9.78 billion.
Insiders reported 82 transactions in the last two years: 18 sales worth $7.82 million and 3 purchases. The newest one on file is from May 4, 2026 (Kim Thomas Sang, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 4, 2026.
Gartner, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Gartner shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BAMCO, Inc. | 7.6 million | 12.04% | $1.5B |
| Independent Franchise Partners LLP | 5.6 million | 8.84% | $1.1B |
| BlackRock Advisors LLC | 4.5 million | 7.09% | $888.0M |
| Vanguard Capital Management LLC | 4.3 million | 6.76% | $845.0M |
| AQR Capital Management LLC | 4.2 million | 6.61% | $827.0M |
| Vanguard Portfolio Management LLC | 3.5 million | 5.58% | $698.0M |
| Harris Associates LP | 2.8 million | 4.51% | $564.0M |
| State Street Corporation | 2.8 million | 4.45% | $556.0M |
| Geode Capital Management LLC | 2.6 million | 4.12% | $516.0M |
| Two Sigma Investments LP | 2.1 million | 3.37% | $422.0M |
As of September 25, 2026.
Gartner institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 689 | – | $9.8B |
| Q1 2026 | 748 | – | $12.0B |
| Q4 2025 | 845 | – | $18.5B |
| Q3 2025 | 836 | – | $19.2B |
| Q2 2025 | 931 | 74.3 million | $30.0B |
| Q1 2025 | 953 | 73.7 million | $30.9B |
| Q4 2024 | 978 | 74.1 million | $35.8B |
| Q3 2024 | 929 | 72.1 million | $36.5B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Gartner insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Kim Thomas Sang | May 4, 2026 | Officer | -- | – |
| Grabe William O | Mar 11, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Hall Eugene A. | Feb 9, 2026 | Chief Executive Officer | -- | – |
| Kranich Robin B. | Feb 9, 2026 | Officer | -- | – |
| Van Ham Dick | Feb 9, 2026 | Officer | -- | – |
| Genovese Yvonne | Feb 9, 2026 | Officer | -- | – |
| Jain Akhil | Feb 9, 2026 | Officer | -- | – |
| Wartinbee William James Iii | Feb 9, 2026 | Officer | -- | – |
| Rinello John J | Feb 9, 2026 | Officer | -- | – |
| Hensel Scott | Feb 9, 2026 | Officer | -- | – |
| Herkes Claire L | Feb 9, 2026 | Officer | -- | – |
| Safian Craig W | Feb 9, 2026 | Chief Financial Officer | -- | – |
Newest 12 of 82 insider transactions in the last two years.
Questions and answers
Who owns the most Gartner stock?
BAMCO, Inc., with 12.04% of the company (as of September 25, 2026). Next: Independent Franchise Partners LLP (8.84%) and BlackRock Advisors LLC (7.09%).
How many institutions own Gartner stock?
689 institutional holdings reports listed Gartner shares in Q2 2026 worth $9.78 billion.
Are Gartner insiders buying or selling the stock?
In the last two years insiders reported 18 sales and 3 purchases (82 transactions in all); the newest on file is from May 4, 2026.
