Gartner, Inc.
US ˙ NYSE ˙ US3666511072

SecurityIT / Gartner, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership871,137 shares
Latest Disclosed Value $ 137,935,832
Northern Trust Corp reports 6.32% decrease in ownership of IT / Gartner, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 871,137 shares of Gartner, Inc. (US:IT) valued at $137,935,833 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 929,860 shares of Gartner, Inc.. This represents a change in shares of -6.32% during the quarter. The current value of the position is $143,519,821 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F GARTNER COM 366651107 871,137 -58,723 -6.32 137,936 -41.20 0.0037
2026-02-17 2025-12-31 13F GARTNER COM 366651107 929,860 -43,435 -4.46 234,585 -8.31 0.0062
2025-11-14 2025-09-30 13F GARTNER COM 366651107 973,295 2,628 0.27 255,850 -34.79 0.0327
2025-08-13 2025-06-30 13F GARTNER COM 366651107 970,667 -35,988 -3.58 392,363 -7.14 0.0540
2025-05-13 2025-03-31 13F GARTNER COM 366651107 1,006,655 99,822 11.01 422,533 -3.82 0.0627
2025-02-14 2024-12-31 13F GARTNER COM 366651107 906,833 88,800 10.86 439,333 5.98 0.0622
2024-11-13 2024-09-30 13F GARTNER COM 366651107 818,033 -39,081 -4.56 414,546 7.70 0.0679
2024-08-14 2024-06-30 13F GARTNER COM 366651107 857,114 10,751 1.27 384,896 -4.60 0.0649
2024-05-14 2024-03-31 13F GARTNER COM 366651107 846,363 -58,241 -6.44 403,436 -1.14 0.0697
2024-02-13 2023-12-31 13F GARTNER COM 366651107 904,604 -63,224 -6.53 408,076 22.71 0.0739
2023-11-13 2023-09-30 13F GARTNER COM 366651107 967,828 -16,517 -1.68 332,555 -3.56 0.0644
2023-08-11 2023-06-30 13F GARTNER COM 366651107 984,345 -7,489 -0.76 344,826 6.72 0.0663
2023-05-15 2023-03-31 13F GARTNER COM 366651107 991,834 30,541 3.18 323,110 -0.01 0.0641
2023-02-13 2022-12-31 13F GARTNER COM 366651107 961,293 -13,396 -1.37 323,129 19.82 0.0678
2022-11-14 2022-09-30 13F GARTNER COM 366651107 974,689 -32,326 -3.21 269,687 10.74 0.0616
2022-08-12 2022-06-30 13F GARTNER COM 366651107 1,007,015 -99,009 -8.95 243,527 -25.98 0.0522
2022-05-13 2022-03-31 13F GARTNER COM 366651107 1,106,024 -20,884 -1.85 328,998 -12.67 0.0579
2022-02-08 2021-12-31 13F GARTNER COM 366651107 1,126,908 -16,406 -1.43 376,747 8.44 0.0617
2021-11-15 2021-09-30 13F GARTNER COM 366651107 1,143,314 -1,521 -0.13 347,430 25.30 0.0615
2021-08-13 2021-06-30 13F GARTNER COM 366651107 1,144,835 -114,893 -9.12 277,279 20.57 0.0488
2021-05-12 2021-03-31 13F GARTNER COM 366651107 1,259,728 -3,164 -0.25 229,964 13.67 0.0428
2021-02-11 2020-12-31 13F GARTNER COM 366651107 1,262,892 -20,814 -1.62 202,303 26.12 0.0394
2020-11-16 2020-09-30 13F GARTNER COM 366651107 1,283,706 -788 -0.06 160,399 2.92 0.0352
2020-08-14 2020-06-30 13F GARTNER COM 366651107 1,284,494 44,619 3.60 155,847 26.24 0.0369
2020-05-14 2020-03-31 13F GARTNER COM 366651107 1,239,875 -7,838 -0.63 123,455 -35.79 0.0354
2020-02-14 2019-12-31 13F GARTNER COM 366651107 1,247,713 -50,240 -3.87 192,273 3.60 0.0430
2019-11-13 2019-09-30 13F GARTNER COM 366651107 1,297,953 52,504 4.22 185,594 -7.41 0.0444
2019-08-13 2019-06-30 13F GARTNER COM 366651107 1,245,449 51,638 4.33 200,444 10.70 0.0475
2019-05-13 2019-03-31 13F GARTNER COM 366651107 1,193,811 23,543 2.01 181,077 21.04 0.0447
2019-02-12 2018-12-31 13F GARTNER COM 366651107 1,170,268 -15,054 -1.27 149,606 -20.37 0.0420
2018-11-14 2018-09-30 13F GARTNER COM 366651107 1,185,322 -27,025 -2.23 187,874 16.60 0.0460
2018-09-18 2018-06-30 13F/A-1 GARTNER COM 366651107 1,212,347 -13,657 -1.11 161,121 11.73 0.0409
2018-08-14 2018-06-30 13F GARTNER COM 366651107 1,218,132 -7,872 161,890
2018-05-09 2018-03-31 13F GARTNER COM 366651107 1,226,004 22,372 1.86 144,203 -2.71 0.0375
2018-02-14 2017-12-31 13F GARTNER COM 366651107 1,203,632 -28,470 -2.31 148,227 -3.30 0.0375
2017-11-13 2017-09-30 13F GARTNER COM 366651107 1,232,102 61,450 5.25 153,287 6.02 0.0400
2017-08-11 2017-06-30 13F GARTNER COM 366651107 1,170,652 26,219 2.29 144,588 16.99 0.0404
2017-05-12 2017-03-31 13F GARTNER COM 366651107 1,144,433 112,471 10.90 123,587 18.49 0.0356
2017-02-13 2016-12-31 13F GARTNER COM 366651107 1,031,962 -68,868 -6.26 104,301 7.12 0.0320
2016-11-09 2016-09-30 13F GARTNER COM 366651107 1,100,830 66,286 6.41 97,368 -3.38 0.0303
2016-08-12 2016-06-30 13F GARTNER COM 366651107 1,034,544 14,495 1.42 100,775 11.36 0.0327
2016-08-19 2016-03-31 13F/A-1 GARTNER COM 366651107 1,020,049 45,652 4.69 90,491 2.39 0.0300
2016-05-13 2016-03-31 13F Gartner Group Inc Ne COMM 366651107 1,020,045 91,140
2016-02-12 2015-12-31 13F Gartner Group Inc Ne COMM 366651107 974,397 -28,946 -2.88 88,378 4.95 0.0293
2015-11-12 2015-09-30 13F GARTNER COM 366651107 1,003,343 121,636 13.80 84,211 11.34 0.0281
2015-08-13 2015-06-30 13F GARTNER COM 366651107 881,707 -10,699 -1.20 75,634 1.08 0.0513
2015-08-13 2015-06-30 13F Gartner Group Inc Ne COMM 036665110 108,787 -783,619 9,332 0.0063
2015-05-14 2015-03-31 13F Gartner Group Inc Ne COMM 366651107 892,406 -92,327 -9.38 74,828 -9.76 0.0225
2015-02-12 2014-12-31 13F Gartner Group Inc Ne COM 366651107 984,733 59,416 6.42 82,924 21.98 0.0250
2014-11-13 2014-09-30 13F Gartner Group Inc Ne COMM 366651107 925,317 157,629 20.53 67,983 25.57 0.0214
2014-08-14 2014-06-30 13F GARTNER com 366651107 767,688 -199,748 -20.65 54,138 -19.41 0.0169
2014-05-14 2014-03-31 13F GARTNER COMM 366651107 967,436 200,794 26.19 67,179 23.33 0.0211
2014-02-21 2013-12-31 13F/A-1 GARTNER COM 366651107 766,642 2,959 0.39 54,470 18.88 0.0175
2014-02-12 2013-12-31 13F GARTNER COM 366651107 766,642 54,470
2013-11-13 2013-09-30 13F GARTNER COM 366651107 763,683 -19,701 -2.51 45,821 2.63 0.0161
2013-08-09 2013-06-30 13F GARTNER COM 366651107 783,384 783,384 44,645 0.0162
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.