As of November 10, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of Gartner Inc. The largest reported stake is Baron Capital Group, Inc.'s, at 11.29%. 15 filings are on record since July 17, 2025 (Schedule 13G/A, June 3, 2026).
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Key facts
- · Reporting person: Independent Franchise Partners, LLP · Sole voting: 5,286,523 · Shared voting: 169,219 · Sole dispositive: 5,582,962 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: AQR Capital Management, LLC · Sole voting: 0 · Shared voting: 4,063,372 · Sole dispositive: 0 · Shared dispositive: 4,175,036 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: BlackRock, Inc. · Sole voting: 4,723,417 · Shared voting: 0 · Sole dispositive: 4,994,459 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-28
- · Reporting person: Bamco Inc · Sole voting: 0 · Shared voting: 6,965,406 · Sole dispositive: 0 · Shared dispositive: 7,026,417 · SCHEDULE 13G/A, 2026-06-03
- · Holder: Baron Capital Group, Inc. · Percent: 8.4% · SCHEDULE 13G/A
Gartner Inc. has 15 Schedule 13D or 13G filings on record since 2025-07-17. 6 holders' latest filing reports 5% or more of common stock, $.0005 par value per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Baron Capital Group, Inc. | 11.29% | 7,558,310 | SCHEDULE 13G/A, 2026-06-03 | 2026-05-31 |
| Independent Franchise Partners, LLP | 8.34% | 5,582,962 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| BlackRock, Inc. | 7.5% | 4,994,459 | SCHEDULE 13G/A, 2026-07-28 | 2026-06-30 |
| Vanguard Capital Management | 7.32% | 5,163,111 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| AQR Capital Management, LLC | 6.24% | 4,175,036 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| Vanguard Portfolio Management | 5.26% | 3,712,354 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| Capital International Investors | 2.9% | 2,022,839 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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More on Gartner Inc. and the records around it.
Gartner Inc. elsewhere on the record
Companies that share a holder
- Independent Franchise Partners, LLP also filed stake reports on 5 other companies: NEWS CORP (Aug 2026), ZILLOW GROUP, INC. (Aug 2026), TransUnion (May 2026)
- BAMCO INC /NY/ also filed stake reports on 22 other companies: Birkenstock Holding plc (Aug 2026), Blackstone Digital Infrastructure Trust Inc. (Aug 2026), CAREDX, INC. (Aug 2026)
- Capital International Investors also filed stake reports on 96 other companies: Aurora Innovation, Inc. (Nov 2026), Arxis, Inc. (Aug 2026), Astronics Corp. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Bamco Inc | 0 | 6,965,406 | 0 | 7,026,417 | SCHEDULE 13G/A, 2026-06-03 |
| Baron Capital Group, Inc. | 0 | 7,497,299 | 0 | 7,558,310 | SCHEDULE 13G/A, 2026-06-03 |
| Baron Capital Management, Inc. | 0 | 531,893 | 0 | 531,893 | SCHEDULE 13G/A, 2026-06-03 |
| Ronald Baron | 0 | 7,497,299 | 0 | 7,558,310 | SCHEDULE 13G/A, 2026-06-03 |
| Baron Partners Fund | 0 | 3,377,688 | 0 | 3,377,688 | SCHEDULE 13G/A, 2026-06-03 |
| Independent Franchise Partners, LLP | 5,286,523 | 169,219 | 5,582,962 | 0 | SCHEDULE 13G/A, 2026-08-13 |
| BlackRock, Inc. | 4,723,417 | 0 | 4,994,459 | 0 | SCHEDULE 13G/A, 2026-07-28 |
| AQR Capital Management, LLC | 0 | 4,063,372 | 0 | 4,175,036 | SCHEDULE 13G/A, 2026-08-13 |
| AQR Capital Management Holdings, LLC | 0 | 4,063,372 | 0 | 4,175,036 | SCHEDULE 13G/A, 2026-08-13 |
The latest filing identifies Gartner Inc. by CUSIP 366651107 and gives its principal executive office as 56 Top Gallant Road, P.O. Box 10212, Stamford, CT 06902-7700 (SCHEDULE 13G/A, 2026-08-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 9.5% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 12.43% | SCHEDULE 13G/A |
| 2025-11-14 | Baron Capital Group, Inc. | 5.71% | SCHEDULE 13G/A |
| 2026-02-13 | Capital International Investors | 5.7% | SCHEDULE 13G |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Capital Management | 7.32% | SCHEDULE 13G |
| 2026-04-29 | Vanguard Portfolio Management | 5.26% | SCHEDULE 13G |
| 2026-05-14 | Independent Franchise Partners, LLP | 6.53% | SCHEDULE 13G |
| 2026-05-14 | Capital International Investors | 2.9% | SCHEDULE 13G/A |
| 2026-05-15 | Baron Capital Group, Inc. | 8.4% | SCHEDULE 13G/A |
| 2026-05-15 | AQR Capital Management, LLC | 5.06% | SCHEDULE 13G |
| 2026-06-03 | Baron Capital Group, Inc. | 11.29% | SCHEDULE 13G/A |
| 2026-07-28 | BlackRock, Inc. | 7.5% | SCHEDULE 13G/A |
| 2026-08-13 | AQR Capital Management, LLC | 6.24% | SCHEDULE 13G/A |
| 2026-08-13 | Independent Franchise Partners, LLP | 8.34% | SCHEDULE 13G/A |
Questions about who owns Gartner Inc.
Who owns Gartner Inc.?
On this page, 6 holders' latest ownership filings report 5% or more of Gartner Inc.: Baron Capital Group, Inc. (11.29%, Schedule 13G/A, filed 2026-06-03), Independent Franchise Partners, LLP (8.34%, Schedule 13G/A, filed 2026-08-13), BlackRock, Inc. (7.5%, Schedule 13G/A, filed 2026-07-28), Vanguard Capital Management (7.32%, Schedule 13G, filed 2026-04-29) and AQR Capital Management, LLC (6.24%, Schedule 13G/A, filed 2026-08-13); 1 more is listed above.
Who are the largest shareholders of Gartner Inc.?
By the share each holder's latest filing reports, the largest holders of Gartner Inc. on this page are Baron Capital Group, Inc. (11.29%), Independent Franchise Partners, LLP (8.34%) and BlackRock, Inc. (7.5%).
When did Baron Capital Group, Inc. buy into Gartner Inc.?
The filings give report dates, not purchase dates. The earliest filing from Baron Capital Group, Inc. on this page is the Schedule 13G/A, filed 2025-11-14, reporting 5.71%; its latest, Schedule 13G/A filed 2026-06-03, reports 11.29%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 15 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Gartner Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 8, 2026 | Leadership change: Thomas Kim departs, Chief Legal Officer | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.