Gartner, Inc.
MX ˙ BMV ˙ US3666511072
SecurityMX:IT / Gartner, Inc.
InstitutionWellington Management Group Llp
Latest Disclosed Ownership4,783 shares
Latest Disclosed Value $ 757,340
Wellington Management Group Llp reports 3.15% increase in ownership of IT / Gartner, Inc.

On May 15, 2026 - Wellington Management Group Llp filed a 13F-HR form disclosing ownership of 4,783 shares of Gartner, Inc. (MX:IT) valued at $757,340 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,637 shares of Gartner, Inc.. This represents a change in shares of 3.15% during the quarter.

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)
2026-05-15 2026-03-31 13F GARTNER COM 366651107 4,783 146 3.15 757 -35.24 0.0000
2026-02-17 2025-12-31 13F GARTNER COM 366651107 4,637 123 2.72 1,170 -1.43 0.0002
2025-11-14 2025-09-30 13F GARTNER COM 366651107 4,514 -821,704 -99.45 1,187 -99.64 0.0002
2025-08-14 2025-06-30 13F GARTNER COM 366651107 826,218 -117,854 -12.48 333,974 -15.72 0.0606
2025-05-13 2025-03-31 13F GARTNER COM 366651107 944,072 -717,933 -43.20 396,265 -50.79 0.0762
2025-02-12 2024-12-31 13F GARTNER COM 366651107 1,662,005 187,854 12.74 805,192 7.78 0.1475
2024-11-14 2024-09-30 13F GARTNER COM 366651107 1,474,151 -24,099 -1.61 747,041 11.03 0.1308
2024-08-14 2024-06-30 13F GARTNER COM 366651107 1,498,250 -199,943 -11.77 672,804 -16.88 0.1201
2024-05-15 2024-03-31 13F GARTNER COM 366651107 1,698,193 -154,627 -8.35 809,478 -3.15 0.1434
2024-02-12 2023-12-31 13F GARTNER COM 366651107 1,852,820 198,274 11.98 835,826 47.02 0.1560
2023-11-14 2023-09-30 13F GARTNER COM 366651107 1,654,546 -164,274 -9.03 568,519 -10.77 0.1140
2023-08-14 2023-06-30 13F GARTNER COM 366651107 1,818,820 207,962 12.91 637,151 21.42 0.1208
2023-05-12 2023-03-31 13F GARTNER COM 366651107 1,610,858 -138,044 -7.89 524,769 -10.73 0.1040
2023-02-13 2022-12-31 13F GARTNER COM 366651107 1,748,902 -120,293 -6.44 587,876 13.67 0.1179
2022-11-14 2022-09-30 13F GARTNER COM 366651107 1,869,195 2,222 0.12 517,187 14.55 0.1102
2022-08-15 2022-06-30 13F GARTNER COM 366651107 1,866,973 -162,765 -8.02 451,492 -25.22 0.0909
2022-05-16 2022-03-31 13F GARTNER COM 366651107 2,029,738 342,228 20.28 603,766 7.02 0.1034
2022-02-11 2021-12-31 13F GARTNER COM 366651107 1,687,510 52,268 3.20 564,168 13.53 0.0902
2021-11-15 2021-09-30 13F GARTNER COM 366651107 1,635,242 1,622,789 13,031.31 496,917 16,376.03 0.0845
2021-08-16 2021-06-30 13F GARTNER COM 366651107 12,453 1,747 16.32 3,016 54.35 0.0005
2021-05-17 2021-03-31 13F GARTNER COM 366651107 10,706 -841 -7.28 1,954 5.62 0.0003
2021-02-12 2020-12-31 13F GARTNER COM 366651107 11,547 9,943 619.89 1,850 825.00 0.0003
2020-11-16 2020-09-30 13F GARTNER COM 366651107 1,604 -1,968 -55.10 200 -53.81 0.0000
2020-08-14 2020-06-30 13F GARTNER COM 366651107 3,572 -300,389 -98.82 433 -98.57 0.0001
2020-05-14 2020-03-31 13F GARTNER COM 366651107 303,961 -220,588 -42.05 30,266 -62.56 0.0080
2020-02-11 2019-12-31 13F GARTNER COM 366651107 524,549 -601,348 -53.41 80,834 -49.79 0.0169
2019-11-13 2019-09-30 13F GARTNER COM 366651107 1,125,897 45,474 4.21 160,992 -7.41 0.0363
2019-08-14 2019-06-30 13F GARTNER COM 366651107 1,080,423 -60,871 -5.33 173,884 0.45 0.0385
2019-05-15 2019-03-31 13F GARTNER COM 366651107 1,141,294 14,497 1.29 173,111 20.18 0.0392
2019-02-14 2018-12-31 13F GARTNER COM 366651107 1,126,797 -102,450 -8.33 144,049 -26.07 0.0361
2018-11-14 2018-09-30 13F GARTNER COM 366651107 1,229,247 -68,820 -5.30 194,835 12.94 0.0410
2018-08-14 2018-06-30 13F GARTNER COM 366651107 1,298,067 -99,361 -7.11 172,513 4.96 0.0384
2018-05-15 2018-03-31 13F GARTNER COM 366651107 1,397,428 241,096 20.85 164,366 15.42 0.0372
2018-02-13 2017-12-31 13F GARTNER COM 366651107 1,156,332 287,780 33.13 142,402 31.78 0.0315
2017-11-13 2017-09-30 13F GARTNER COM 366651107 868,552 -345,813 -28.48 108,057 -27.96 0.0248
2017-08-14 2017-06-30 13F GARTNER COM 366651107 1,214,365 -6,513 -0.53 149,986 13.76 0.0353
2017-05-11 2017-03-31 13F GARTNER COM 366651107 1,220,878 15,973 1.33 131,841 8.26 0.0318
2017-02-14 2016-12-31 13F GARTNER COM 366651107 1,204,905 -25,645 -2.08 121,780 11.89 0.0305
2016-11-14 2016-09-30 13F GARTNER COM 366651107 1,230,550 336,107 37.58 108,843 24.92 0.0273
2016-08-15 2016-06-30 13F GARTNER COM 366651107 894,443 430,392 92.75 87,128 110.13 0.0225
2016-05-13 2016-03-31 13F GARTNER COM 366651107 464,051 100,702 27.71 41,464 25.82 0.0109
2016-02-12 2015-12-31 13F GARTNER COM 366651107 363,349 6,924 1.94 32,956 10.17 0.0086
2015-11-16 2015-09-30 13F GARTNER COM 366651107 356,425 -39,988 -10.09 29,914 -12.03 0.0083
2015-08-14 2015-06-30 13F GARTNER COM 366651107 396,413 -30,586 -7.16 34,005 -5.02 0.0088
2015-05-15 2015-03-31 13F GARTNER COM 366651107 426,999 9,049 2.17 35,804 1.73 0.0092
2015-02-13 2014-12-31 13F GARTNER COM 366651107 417,950 -42,795 -9.29 35,196 3.97 0.0093
2014-11-14 2014-09-30 13F GARTNER COM 366651107 460,745 70,050 17.93 33,851 22.86 0.0093
2014-08-14 2014-06-30 13F GARTNER COM 366651107 390,695 -847,605 -68.45 27,552 -67.96 0.0074
2014-05-15 2014-03-31 13F GARTNERINC COM 366651107 1,238,300 318,995 34.70 85,988 31.65 0.0239
2014-02-14 2013-12-31 13F GARTNER COM 366651107 919,305 -14,427 -1.55 65,317 16.59 0.0188
2013-11-14 2013-09-30 13F GARTNER COM 366651107 933,732 89,697 10.63 56,024 16.47 0.0175
2013-08-14 2013-06-30 13F GARTNER COM 366651107 844,035 844,035 48,101 0.0157
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.