GARTNER INC (IT) Institutional Shareholders
GARTNER INC (IT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $10.88B in IT holdings during the latest filing period.
Bamco Inc is currently the largest disclosed institutional shareholder of IT tracked by InsiderSet, reporting ownership valued at approximately $937.00M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.10B, representing an estimated gain of +17.22% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed IT value among the investors covered in this analysis. Major shareholders include Bamco Inc, Independent Franchise Partners Llp, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in GARTNER INC (IT).
This page ranks the largest institutional IT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
645
Total Reported Value
$10.88B
Largest Holder
Bamco Inc
Largest Position
$937.00M
Insider Transactions (90d)
23
Latest Filing Quarter
Q2 2026
New Institutional Positions
39
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Bamco Inc | 2.83% | 5,917,616 | $936,995,317 | $1,098,309,530 | +$161,314,213 | +17.22% | |
| Independent Franchise Partners Llp | 5.10% | 4,600,771 | $728,486,080 | $853,903,098 | +$125,417,018 | +17.22% | |
| Vanguard Capital Management Llc | 0.02% | 4,468,135 | $707,484,496 | $829,285,856 | +$121,801,360 | +17.22% | |
| Blackrock, Inc. | 0.01% | 5,217,146 | $676,246,451 | $968,302,298 | +$292,055,847 | +43.19% | |
| Vanguard Portfolio Management Llc | 0.03% | 3,693,957 | $584,901,151 | $685,598,419 | +$100,697,268 | +17.22% | |
| Aqr Capital Management Llc | 0.26% | 3,567,263 | $564,840,405 | $662,084,013 | +$97,243,608 | +17.22% | |
| Harris Associates L P | 0.66% | 3,135,774 | $496,518,455 | $581,999,654 | +$85,481,199 | +17.22% | |
| Morgan Stanley | 0.02% | 2,377,678 | $376,481,914 | $441,297,037 | +$64,815,123 | +17.22% | |
| State Street Corp | 0.01% | 2,808,781 | $364,074,193 | $521,309,754 | +$157,235,561 | +43.19% | |
| Geode Capital Management, Llc | 0.02% | 2,212,980 | $349,244,290 | $410,729,088 | +$61,484,798 | +17.61% | |
| Capital International Investors | 0.08% | 2,022,839 | $320,296,327 | $375,438,918 | +$55,142,591 | +17.22% | |
| Invesco Ltd. | 0.05% | 2,021,101 | $320,021,134 | $375,116,346 | +$55,095,212 | +17.22% | |
| Goldman Sachs Group Inc | 0.04% | 1,774,623 | $280,993,854 | $329,370,029 | +$48,376,175 | +17.22% | |
| Federated Hermes, Inc. | 0.44% | 1,690,528 | $267,678,205 | $313,761,997 | +$46,083,792 | +17.22% | |
| Storebrand Asset Management As | 0.09% | 857,798 | $260,345,711 | $159,207,309 | -$101,138,402 | -38.85% | |
| Two Sigma Investments, Lp | 0.15% | 1,127,145 | $178,472,139 | $209,198,112 | +$30,725,973 | +17.22% | |
| Ubs Group Ag | 0.03% | 1,023,293 | $162,028,213 | $189,923,181 | +$27,894,968 | +17.22% | |
| Northern Trust Corp | 0.02% | 871,137 | $137,935,832 | $161,683,027 | +$23,747,195 | +17.22% | |
| Bank Of America Corp | 0.01% | 773,771 | $122,518,900 | $143,611,898 | +$21,092,998 | +17.22% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.03% | 772,054 | $122,247,030 | $143,293,222 | +$21,046,192 | +17.22% | |
| Black Creek Investment Management Inc. | 5.41% | 636,762 | $100,824,895 | $118,183,027 | +$17,358,132 | +17.22% | |
| Madison Asset Management, Llc | 1.20% | 613,257 | $97,103,148 | $113,820,499 | +$16,717,351 | +17.22% | |
| Legal & General Group Plc | 0.02% | 590,678 | $93,527,951 | $109,629,837 | +$16,101,886 | +17.22% | |
| Fmr Llc | 0.00% | 499,270 | $79,054,354 | $92,664,512 | +$13,610,158 | +17.22% | |
| Dimensional Fund Advisors Lp | 0.02% | 484,933 | $76,792,807 | $90,003,565 | +$13,210,758 | +17.20% | |
| Charles Schwab Investment Management Inc | 0.01% | 483,379 | $76,538,231 | $89,715,142 | +$13,176,911 | +17.22% | |
| Amundi | 0.02% | 480,251 | $76,042,943 | $89,134,586 | +$13,091,643 | +17.22% | |
| Bnp Paribas Financial Markets | 0.05% | 475,430 | $75,279,586 | $88,239,808 | +$12,960,222 | +17.22% | |
| Nuveen, Llc | 0.02% | 431,866 | $68,381,663 | $80,154,330 | +$11,772,667 | +17.22% | |
| Vanguard Fiduciary Trust Co | 0.02% | 403,618 | $63,908,874 | $74,911,501 | +$11,002,627 | +17.22% | |
| Hsbc Holdings Plc | 0.04% | 386,453 | $61,193,589 | $71,725,677 | +$10,532,088 | +17.21% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.09% | 352,627 | $55,834,959 | $65,447,571 | +$9,612,612 | +17.22% | |
| Disciplined Growth Investors | Fred Martin | 1.10% | 338,893 | $53,660,318 | $62,898,541 | +$9,238,223 | +17.22% |
| Bank Of New York Mellon Corp | 0.01% | 395,477 | $51,261,746 | $73,400,531 | +$22,138,785 | +43.19% | |
| Gotham Asset Management, Llc | 0.15% | 314,074 | $49,730,477 | $58,292,134 | +$8,561,657 | +17.22% | |
| Millennium Management Llc | 0.04% | 311,407 | $49,308,184 | $57,797,139 | +$8,488,955 | +17.22% | |
| Barclays Plc | 0.02% | 306,463 | $48,525,354 | $56,879,533 | +$8,354,179 | +17.22% | |
| Renaissance Technologies LLC | Jim Simons | 0.08% | 305,089 | $48,307,792 | $56,624,518 | +$8,316,726 | +17.22% |
| Diamond Hill Capital Management Inc | 0.37% | 360,635 | $46,745,509 | $66,933,856 | +$20,188,347 | +43.19% | |
| Royal Bank Of Canada | 0.01% | 277,918 | $44,007,000 | $51,581,581 | +$7,574,581 | +17.21% | |
| Citigroup Inc | 0.02% | 302,731 | $39,239,992 | $56,186,874 | +$16,946,882 | +43.19% | |
| D. E. Shaw & Co., Inc. | 0.03% | 245,851 | $38,928,047 | $45,629,946 | +$6,701,899 | +17.22% | |
| Deutsche Bank Ag\ | 0.01% | 285,847 | $37,051,488 | $53,053,203 | +$16,001,715 | +43.19% | |
| Worldquant Millennium Advisors Llc | 0.14% | 233,117 | $36,911,746 | $43,266,515 | +$6,354,769 | +17.22% | |
| Clarkston Capital Partners, Llc | 2.77% | 229,592 | $36,353,597 | $42,612,275 | +$6,258,678 | +17.22% | |
| Mackenzie Financial Corp | 0.04% | 229,202 | $36,291,845 | $42,539,891 | +$6,248,046 | +17.22% | |
| Jones Financial Companies Lllp | 0.02% | 220,732 | $34,306,185 | $40,967,859 | +$6,661,674 | +19.42% | |
| Swiss National Bank | 0.02% | 211,571 | $33,500,152 | $39,267,578 | +$5,767,426 | +17.22% | |
| Artisan Partners Limited Partnership | 0.05% | 192,029 | $30,405,872 | $35,640,582 | +$5,234,710 | +17.22% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.06% | 171,232 | $27,112,875 | $31,780,659 | +$4,667,784 | +17.22% |
Frequently asked questions about IT
Who owns the most IT stock?
The largest holders of IT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for GARTNER INC (IT).
Is IT widely held by superinvestors?
Many widely followed stocks like IT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.