Gartner, Inc.
MX ˙ BMV ˙ US3666511072
SecurityMX:IT / Gartner, Inc.
InstitutionHarris Associates L P
ManagerVictor Morgenstern
Latest Disclosed Ownership3,135,774 shares
Latest Disclosed Value $ 496,518,455
Harris Associates L P reports 225.29% increase in ownership of IT / Gartner, Inc.

On May 15, 2026 - Harris Associates L P filed a 13F-HR form disclosing ownership of 3,135,774 shares of Gartner, Inc. (MX:IT) valued at $496,518,455 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 963,984 shares of Gartner, Inc.. This represents a change in shares of 225.29% 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 3,135,774 2,171,790 225.29 496,518 104.17 0.6617
2026-02-17 2025-12-31 13F GARTNER COM 366651107 963,984 963,984 243,194 0.3074
2025-02-14 2024-12-31 13F GARTNER COM 366651107 0 -465 -100.00 0 -100.00
2024-11-14 2024-09-30 13F GARTNER COM 366651107 465 -1,246 -72.82 236 -69.40 0.0004
2024-08-14 2024-06-30 13F GARTNER COM 366651107 1,711 -595 -25.80 768 -30.12 0.0013
2024-05-15 2024-03-31 13F GARTNER COM 366651107 2,306 -409 -15.06 1,099 -10.21 0.0018
2024-02-14 2023-12-31 13F GARTNER COM 366651107 2,715 -1,311 -32.56 1,225 -11.50 0.0021
2023-11-14 2023-09-30 13F GARTNER COM 366651107 4,026 -295 -6.83 1,383 -8.59 0.0027
2023-08-14 2023-06-30 13F GARTNER COM 366651107 4,321 -3,950 -47.76 1,514 -43.84 0.0028
2023-05-15 2023-03-31 13F GARTNER COM 366651107 8,271 -345,262 -97.66 2,695 -97.73 0.0052
2023-02-14 2022-12-31 13F GARTNER COM 366651107 353,533 -582,200 -62.22 118,837 -54.10 0.2420
2022-11-14 2022-09-30 13F GARTNER COM 366651107 935,733 -237,114 -20.22 258,908 -8.72 0.5603
2022-08-15 2022-06-30 13F GARTNER COM 366651107 1,172,847 -134,798 -10.31 283,629 -27.08 0.5651
2022-05-16 2022-03-31 13F GARTNER COM 366651107 1,307,645 -165,761 -11.25 388,972 -21.04 0.6255
2022-02-14 2021-12-31 13F GARTNER COM 366651107 1,473,406 -272,069 -15.59 492,589 -7.13 0.7669
2021-11-15 2021-09-30 13F GARTNER COM 366651107 1,745,475 2,660 0.15 530,415 25.66 0.8450
2021-08-16 2021-06-30 13F GARTNER COM 366651107 1,742,815 -1,822 -0.10 422,110 32.54 0.6722
2021-05-17 2021-03-31 13F GARTNER COM 366651107 1,744,637 -13,814 -0.79 318,484 13.06 0.5443
2021-02-16 2020-12-31 13F GARTNER COM 366651107 1,758,451 -11,456 -0.65 281,686 27.37 0.5448
2020-11-16 2020-09-30 13F GARTNER COM 366651107 1,769,907 404 0.02 221,150 3.01 0.5385
2020-08-14 2020-06-30 13F GARTNER COM 366651107 1,769,503 -2,280 -0.13 214,694 21.70 0.5223
2020-05-15 2020-03-31 13F GARTNER COM 366651107 1,771,783 -93,705 -5.02 176,417 -38.63 0.4886
2020-02-14 2019-12-31 13F/A-1 GARTNER COM 366651107 1,865,488 -42,320 -2.22 287,472 5.38 0.5096
2020-02-14 2019-12-31 13F GARTNER COM 366651107 1,865,488 287,472
2019-11-14 2019-09-30 13F GARTNER COM 366651107 1,907,808 -472 -0.02 272,797 -11.18 0.5294
2019-08-14 2019-06-30 13F GARTNER COM 366651107 1,908,280 -781 -0.04 307,118 6.06 0.5645
2019-05-15 2019-03-31 13F GARTNER COM 366651107 1,909,061 -2,957 -0.15 289,567 18.46 0.5314
2019-02-14 2018-12-31 13F GARTNER COM 366651107 1,912,018 -20,942 -1.08 244,433 -20.22 0.4931
2018-11-14 2018-09-30 13F GARTNER COM 366651107 1,932,960 231,320 13.59 306,374 35.47 0.4814
2018-08-14 2018-06-30 13F GARTNER COM 366651107 1,701,640 1,701,640 226,148 0.3654
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.