Gartner, Inc.
MX ˙ BMV ˙ US3666511072
SecurityMX:IT / Gartner, Inc.
InstitutionTwo Sigma Advisers, Lp
Latest Disclosed Ownership113,820 shares
Latest Disclosed Value $ 28,714,510
Two Sigma Advisers, Lp reports 14.28% increase in ownership of IT / Gartner, Inc.

On February 17, 2026 - Two Sigma Advisers, Lp filed a 13F-HR form disclosing ownership of 113,820 shares of Gartner, Inc. (MX:IT) valued at $28,714,510 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 99,600 shares of Gartner, Inc.. This represents a change in shares of 14.28% 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)
2026-02-17 2025-12-31 13F GARTNER COM 366651107 113,820 14,220 14.28 28,715 9.67 0.0558
2025-11-14 2025-09-30 13F GARTNER COM 366651107 99,600 -416,000 -80.68 26,182 -87.44 0.0524
2025-08-14 2025-06-30 13F GARTNER COM 366651107 515,600 -9,300 -1.77 208,416 -5.40 0.4271
2025-05-15 2025-03-31 13F GARTNER COM 366651107 524,900 378,200 257.81 220,322 210.00 0.4960
2025-02-14 2024-12-31 13F GARTNER COM 366651107 146,700 -16,600 -10.17 71,072 -14.12 0.1644
2024-11-14 2024-09-30 13F GARTNER COM 366651107 163,300 -34,800 -17.57 82,754 -6.98 0.1939
2024-08-14 2024-06-30 13F GARTNER COM 366651107 198,100 88,800 81.24 88,959 70.74 0.1984
2024-05-15 2024-03-31 13F GARTNER COM 366651107 109,300 -200 -0.18 52,100 5.47 0.1207
2024-02-14 2023-12-31 13F GARTNER COM 366651107 109,500 -110,600 -50.25 49,397 -34.69 0.1157
2023-11-14 2023-09-30 13F GARTNER COM 366651107 220,100 -86,900 -28.31 75,629 -29.68 0.1937
2023-08-14 2023-06-30 13F GARTNER COM 366651107 307,000 51,100 19.97 107,545 29.01 0.2739
2023-05-15 2023-03-31 13F GARTNER COM 366651107 255,900 80,700 46.06 83,365 41.56 0.2150
2023-02-14 2022-12-31 13F GARTNER COM 366651107 175,200 -12,600 -6.71 58,892 13.33 0.1644
2022-11-14 2022-09-30 13F GARTNER COM 366651107 187,800 21,400 12.86 51,962 29.13 0.1504
2022-08-15 2022-06-30 13F GARTNER COM 366651107 166,400 46,800 39.13 40,241 13.11 0.1142
2022-05-16 2022-03-31 13F GARTNER COM 366651107 119,600 57,900 93.84 35,576 72.46 0.0946
2022-02-14 2021-12-31 13F GARTNER COM 366651107 61,700 30,400 97.12 20,628 116.89 0.0517
2021-11-15 2021-09-30 13F GARTNER COM 366651107 31,300 -20,000 -38.99 9,511 -23.45 0.0247
2021-08-16 2021-06-30 13F GARTNER COM 366651107 51,300 14,400 39.02 12,425 84.46 0.0328
2021-05-17 2021-03-31 13F GARTNER COM 366651107 36,900 -15,100 -29.04 6,736 -19.14 0.0185
2021-02-16 2020-12-31 13F GARTNER COM 366651107 52,000 9,100 21.21 8,330 55.41 0.0223
2020-11-16 2020-09-30 13F GARTNER COM 366651107 42,900 -29,300 -40.58 5,360 -38.81 0.0153
2020-09-15 2020-06-30 13F/A-1 GARTNER COM 366651107 72,200 -8,192 -10.19 8,760 9.43 0.0257
2020-08-14 2020-06-30 13F GARTNER COM 366651107 72,200 -8,192 8,760 25,313.4907
2020-05-15 2020-03-31 13F GARTNER COM 366651107 80,392 72,292 892.49 8,005 541.43 0.0306
2020-02-14 2019-12-31 13F GARTNER COM 366651107 8,100 8,100 1,248 0.0029
2017-02-14 2016-12-31 13F GARTNER COM 366651107 0 -133,478 -100.00 0 -100.00
2016-11-14 2016-09-30 13F GARTNER COM 366651107 133,478 133,478 0.00 11,806 0.0503
2016-05-16 2016-03-31 13F GARTNER COM 366651107 0 0 0 0.0000
2015-05-15 2015-03-31 13F GARTNER COM 366651107 0 -3,879 -100.00 0 -100.00
2016-02-09 2014-12-31 13F/A-1 GARTNER COM 366651107 3,879 3,879 -96.86 327 -95.59 0.0026
2015-02-17 2014-12-31 13F GARTNER COM 366651107 3,879 327
2014-02-14 2013-12-31 13F GARTNER COMMON STOCK 366651107 0 -123,679 -100.00 0 -100.00
2013-11-14 2013-09-30 13F GARTNER COMMON STOCK 366651107 123,679 120,100 3,355.69 7,421 3,537.75 0.0884
2013-08-14 2013-06-30 13F GARTNER COM 366651107 3,579 3,579 204 0.0029
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.