Gartner: which funds bought and sold
Institutions that bought and sold Gartner shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 268 institutions that filed 13F reports for both quarters added to or opened positions in Gartner, and 438 cut or closed them. Together they sold a net 1.4M shares, −1.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 5.0M shares (+19.2%); index fund managers were net sellers of 2.4M shares (−10.5%). 76 opened a new position and 142 sold out entirely.
Bought, Q2 2026 268 institutions, 76 of them new holders Sold, Q2 2026 438 institutions, 142 of them sold out
Net change, all compared −1.4M shares (−1.8%)
Net change, active managers +5.0M shares (+19.2%), 37 bought, 29 sold
Buyers versus sellers
268 bought 74 438 sold
Active managers and hedge funds 37 bought · 29 sold · +5.0M
Index fund managers 3 bought · 9 sold · −2.4M
Other institutions 228 bought · 400 sold · −4.0M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| BAMCO Inc Active manager | +1.7M +28.4% | 7.6M | $985M |
| Two Sigma Investments, LP Hedge fund | +1.0M +88.9% | 2.1M | $276M |
| Independent Franchise Partners LLP Active manager | +982K +21.3% | 5.6M | $724M |
| AQR Capital Management LLC Hedge fund | +608K +17.0% | 4.2M | $541M |
| Jane Street Group, LLC | +595K +36328.0% | 596K | $77.3M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +578K +7564.6% | 586K | $75.9M |
| D. E. Shaw & Co., Inc. Hedge fund | +559K +227.4% | 805K | $104M |
| Citadel Advisors LLC Hedge fund | +517K +700.2% | 590K | $76.5M |
| Geode Capital Management, LLC Index funds | +390K +17.6% | 2.6M | $337M |
| Federated Hermes, Inc. Active manager | +354K +20.9% | 2.0M | $265M |
| Balyasny Asset Management L.P. Hedge fund | +299K +3335.3% | 308K | $40M |
| Renaissance Technologies LLC Hedge fund | +229K +75.1% | 534K | $69.2M |
| BNP Paribas Financial Markets | +199K +41.8% | 674K | $87.4M |
| Trexquant Investment LP Hedge fund | +198K New position | 198K | $25.7M |
| Qube Research & Technologies Ltd Hedge fund | +181K New position | 181K | $23.4M |
| Diamond Hill Capital Management, LLC (Investment Advisor) Active manager | +174K +93.2% | 361K | $46.7M |
| HRT Financial LP | +163K +231.0% | 234K | $30.3M |
| Ossiam | +138K New position | 138K | $17.9M |
| Bank Of America Corp | +134K +17.3% | 908K | $118M |
| Susquehanna International Group, LLP | +107K +453.9% | 131K | $17M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| BAMCO Inc Active manager | +1.7M +28.4% | 7.6M | $985M |
| Two Sigma Investments, LP Hedge fund | +1.0M +88.9% | 2.1M | $276M |
| Independent Franchise Partners LLP Active manager | +982K +21.3% | 5.6M | $724M |
| AQR Capital Management LLC Hedge fund | +608K +17.0% | 4.2M | $541M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +578K +7564.6% | 586K | $75.9M |
| D. E. Shaw & Co., Inc. Hedge fund | +559K +227.4% | 805K | $104M |
| Citadel Advisors LLC Hedge fund | +517K +700.2% | 590K | $76.5M |
| Federated Hermes, Inc. Active manager | +354K +20.9% | 2.0M | $265M |
| Balyasny Asset Management L.P. Hedge fund | +299K +3335.3% | 308K | $40M |
| Renaissance Technologies LLC Hedge fund | +229K +75.1% | 534K | $69.2M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital International Investors Active manager | −2.0M Sold out | 0 | — |
| Blackrock, Inc. Index funds | −1.7M −24.2% | 5.2M | $676M |
| Deutsche Bank Ag\ | −798K −73.6% | 286K | $37.1M |
| UBS Group AG | −583K −57.0% | 440K | $57.1M |
| Morgan Stanley | −510K −21.5% | 1.9M | $242M |
| State Street Corp Index funds | −458K −14.0% | 2.8M | $364M |
| Legal & General Group PLC | −374K −63.4% | 216K | $28M |
| Jpmorgan Chase & Co | −371K −42.3% | 505K | $67.5M |
| Harris Associates L P Active manager | −289K −9.2% | 2.8M | $369M |
| HSBC Holdings PLC | −288K −74.5% | 99K | $12.8M |
| UBS Am, A Distinct Business Unit Of UBS Asset Management Americas LLC | −261K −33.8% | 511K | $66.2M |
| Healthcare Of Ontario Pension Plan Trust Fund | −252K −71.6% | 100K | $13M |
| Nuveen, LLC | −232K −53.6% | 200K | $26M |
| Mackenzie Financial Corp | −220K −96.0% | 9,183 | $1.2M |
| Northern Trust Corp Index funds | −213K −24.5% | 658K | $85.3M |
| Vanguard Capital Management LLC Index funds | −201K −4.5% | 4.3M | $553M |
| FMR LLC Active manager | −184K −36.9% | 315K | $40.9M |
| Vanguard Portfolio Management LLC Index funds | −173K −4.7% | 3.5M | $456M |
| Sumitomo Mitsui Trust Group, Inc. | −161K −90.6% | 17K | $2.2M |
| Gotham Asset Management, LLC Hedge fund | −115K −36.7% | 199K | $25.8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital International Investors Active manager | −2.0M Sold out | 0 | — |
| Harris Associates L P Active manager | −289K −9.2% | 2.8M | $369M |
| FMR LLC Active manager | −184K −36.9% | 315K | $40.9M |
| Gotham Asset Management, LLC Hedge fund | −115K −36.7% | 199K | $25.8M |
| Voloridge Investment Management, LLC Hedge fund | −108K Sold out | 0 | — |
| Artisan Partners Limited Partnership Active manager | −65K −33.9% | 127K | $16.5M |
| Worldquant Millennium Advisors LLC Hedge fund | −43K −18.4% | 190K | $24.7M |
| Acadian Asset Management LLC Active manager | −40K −99.4% | 255 | $33,000 |
| Holocene Advisors, LP Hedge fund | −38K Sold out | 0 | — |
| Man Group PLC Hedge fund | −22K −93.2% | 1,587 | $205,707 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Trexquant Investment LPHedge fund | 198K | $25.7M |
| Qube Research & Technologies LtdHedge fund | 181K | $23.4M |
| Ossiam | 138K | $17.9M |
| Longaeva Partners L.P. | 89K | $11.5M |
| ING Groep NV | 42K | $5.4M |
| Verition Fund Management LLCHedge fund | 40K | $5.2M |
| Twinbeech Capital LP | 21K | $2.7M |
| Winton Group LtdHedge fund | 21K | $2.7M |
| Bridgewater Associates, LPHedge fund | 17K | $2.3M |
| Catalyst Funds Management Pty Ltd | 17K | $2.2M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Capital International InvestorsActive manager | 2.0M | $320M |
| Voloridge Investment Management, LLCHedge fund | 108K | $17M |
| Railway Pension Investments Ltd | 91K | $14.5M |
| Australiansuper Pty Ltd | 69K | $11M |
| Goodnow Investment Group, LLC | 59K | $9.4M |
| Holocene Advisors, LPHedge fund | 38K | $6M |
| Tredje Ap-Fonden | 33K | $5.2M |
| Mn Services Vermogensbeheer B.V. | 30K | $4.8M |
| SEB Asset Management AB | 29K | $4.5M |
| Vinva Investment Management Ltd | 21K | $3.4M |
Who holds the shares
- Institutions reporting
- 648
- Ten largest holders
- 54.5% of 13F-reported shares
- Index fund managers
- 26.9% of 13F-reported shares
- Active managers and hedge funds
- 41.3% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 37 | 29 | 10 | 9 | +5.0M | +19.2% |
| Index fund managers | 3 | 9 | 0 | 0 | −2.4M | −10.5% |
| Other institutions | 228 | 400 | 66 | 133 | −4.0M | −14.8% |