Gartner, Inc.
US ˙ NYSE ˙ US3666511072

SecurityIT / Gartner, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership24,707 shares
Latest Disclosed Value $ 3,912,106
M&t Bank Corp reports 7.35% increase in ownership of IT / Gartner, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 24,707 shares of Gartner, Inc. (US:IT) valued at $3,912,106 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 23,015 shares of Gartner, Inc.. This represents a change in shares of 7.35% during the quarter. The current value of the position is $4,070,478 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)
2026-05-12 2026-03-31 13F GARTNER COM 366651107 24,707 1,692 7.35 3,912 -32.62 0.0032
2026-01-30 2025-12-31 13F/A-1 GARTNER COM 366651107 23,015 -2,545 -9.96 5,806 -13.58 0.0186
2026-01-28 2025-12-31 13F GARTNER COM 366651107 5,532 -20,028 351 0.0002
2025-11-14 2025-09-30 13F GARTNER COM 366651107 25,560 -2,996 -10.49 6,719 -41.80 0.0226
2025-08-13 2025-06-30 13F GARTNER COM 366651107 28,556 -1,759 -5.80 11,543 -9.29 0.0397
2025-04-30 2025-03-31 13F GARTNER COM 366651107 30,315 -3,922 -11.46 12,724 -23.29 0.0464
2025-02-06 2024-12-31 13F GARTNER COM 366651107 34,237 -3,034 -8.14 16,587 -12.18 0.0556
2024-11-19 2024-09-30 13F/A-1 GARTNER COM 366651107 37,271 -4,626 -11.04 18,888 0.39 0.0621
2024-11-15 2024-09-30 13F GARTNER COM 366651107 37,271 -4,626 18,888 0.0114
2024-07-31 2024-06-30 13F GARTNER COM 366651107 41,897 -4,476 -9.65 18,815 -14.88 0.0642
2024-05-07 2024-03-31 13F GARTNER COM 366651107 46,373 23,289 100.89 22,105 112.27 0.0769
2024-02-06 2023-12-31 13F GARTNER COM 366651107 23,084 -1,585 -6.43 10,414 22.85 0.0383
2023-11-02 2023-09-30 13F GARTNER COM 366651107 24,669 14,652 146.27 8,476 141.62 0.0338
2023-08-09 2023-06-30 13F GARTNER COM 366651107 10,017 -303 -2.94 3,509 4.34 0.0131
2023-05-11 2023-03-31 13F GARTNER COM 366651107 10,320 -187 -1.78 3,362 -4.79 0.0130
2023-02-13 2022-12-31 13F/A-1 GARTNER COM 366651107 10,507 -1,331 -11.24 3,532 7.75 0.0142
2023-02-13 2022-12-31 13F GAP COM 366651107 10,586 -1,252 3,526 0.0142
2022-11-17 2022-09-30 13F/A-1 GARTNER COM 366651107 11,838 -299 -2.46 3,277 151.30 0.0146
2022-11-14 2022-09-30 13F GARTNER COM 366651107 11,838 -299 3,240 0.0028
2022-08-05 2022-06-30 13F GARTNER COM 366651107 12,137 6,934 133.27 1,304 -15.76 0.0061
2022-05-09 2022-03-31 13F GARTNER COM 366651107 5,203 1,208 30.24 1,548 15.87 0.0068
2022-02-07 2021-12-31 13F GARTNER COM 366651107 3,995 314 8.53 1,336 19.50 0.0056
2021-10-28 2021-09-30 13F GARTNER COM 366651107 3,681 985 36.54 1,118 70.95 0.0050
2021-08-13 2021-06-30 13F GARTNER COM 366651107 2,696 -272 -9.16 654 20.66 0.0029
2021-05-06 2021-03-31 13F GARTNER COM 366651107 2,968 -584 -16.44 542 -4.75 0.0023
2021-02-12 2020-12-31 13F GARTNER COM 366651107 3,552 -467 -11.62 569 13.57 0.0025
2020-11-06 2020-09-30 13F GARTNER COM 366651107 4,019 12 0.30 501 3.09 0.0025
2020-07-29 2020-06-30 13F GARTNER COM 366651107 4,007 -1,529 -27.62 486 -11.80 0.0026
2020-05-14 2020-03-31 13F GARTNER COM 366651107 5,536 -1,073 -16.24 551 -45.87 0.0033
2020-02-07 2019-12-31 13F GARTNER COM 366651107 6,609 -38 -0.57 1,018 7.05 0.0048
2019-11-12 2019-09-30 13F GARTNER COM 366651107 6,647 158 2.43 951 -9.00 0.0047
2019-08-12 2019-06-30 13F GARTNER COM 366651107 6,489 -142 -2.14 1,045 3.77 0.0055
2019-05-15 2019-03-31 13F GARTNER COM 366651107 6,631 -1,008 -13.20 1,007 2.97 0.0053
2019-02-01 2018-12-31 13F GARTNER COM 366651107 7,639 -16,689 -68.60 978 -74.64 0.0056
2018-11-09 2018-09-30 13F GARTNER COM 366651107 24,328 -7,253 -22.97 3,856 -8.12 0.0193
2018-08-10 2018-06-30 13F GARTNER COM 366651107 31,581 2,048 6.93 4,197 20.81 0.0226
2018-05-04 2018-03-31 13F GARTNER COM 366651107 29,533 521 1.80 3,474 -2.74 0.0187
2018-02-06 2017-12-31 13F GARTNER COM 366651107 29,012 78 0.27 3,572 -0.75 0.0187
2017-11-13 2017-09-30 13F GARTNER COM 366651107 28,934 578 2.04 3,599 2.77 0.0195
2017-08-11 2017-06-30 13F GARTNER COM 366651107 28,356 4,291 17.83 3,502 34.74 0.0207
2017-05-10 2017-03-31 13F GARTNER COM 366651107 24,065 14,650 155.60 2,599 173.00 0.0157
2017-02-14 2016-12-31 13F GARTNER COM 366651107 9,415 973 11.53 952 27.44 0.0059
2016-11-04 2016-09-30 13F GARTNER COM 366651107 8,442 -26 -0.31 747 -9.45 0.0048
2016-08-04 2016-06-30 13F GARTNER COM 366651107 8,468 -187 -2.16 825 6.87 0.0056
2016-05-11 2016-03-31 13F GARTNER COM 366651107 8,655 933 12.08 772 10.44 0.0052
2016-02-12 2015-12-31 13F GARTNER COM 366651107 7,722 -718 -8.51 699 -1.41 0.0046
2015-11-13 2015-09-30 13F GARTNER COM 366651107 8,440 1,024 13.81 709 11.48 0.0048
2015-08-14 2015-06-30 13F GARTNER COM 366651107 7,416 -1,103 -12.95 636 -10.92 0.0038
2015-05-14 2015-03-31 13F GARTNER COM 366651107 8,519 -117 -1.35 714 -1.65 0.0045
2015-02-12 2014-12-31 13F GARTNER COM 366651107 8,636 304 3.65 726 18.82 0.0045
2014-11-14 2014-09-30 13F GARTNER COM 366651107 8,332 8,298 24,405.88 611 30,450.00 0.0043
2014-05-14 2014-03-31 13F GARTNER COMMON STOCK 366651107 34 34 2 0.0001
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.