Gartner, Inc.
MX ˙ BMV ˙ US3666511072
SecurityMX:IT / Gartner, Inc.
InstitutionMassmutual Trust Co Fsb/adv
Latest Disclosed Ownership1,221 shares
Latest Disclosed Value $ 193,333
Massmutual Trust Co Fsb/adv reports 6.58% decrease in ownership of IT / Gartner, Inc.

On April 13, 2026 - Massmutual Trust Co Fsb/adv filed a 13F-HR form disclosing ownership of 1,221 shares of Gartner, Inc. (MX:IT) valued at $193,333 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 7, 2026 disclosing 1,307 shares of Gartner, Inc.. This represents a change in shares of -6.58% 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)
2026-04-13 2026-03-31 13F Gartner Common / Ordinary Stock 366651107 1,221 -86 -6.58 193 -41.34 0.0053
2026-01-07 2025-12-31 13F Gartner Common / Ordinary Stock 366651107 1,307 -281 -17.70 330 -21.10 0.0085
2025-10-22 2025-09-30 13F Gartner Common / Ordinary Stock 366651107 1,588 -528 -24.95 417 -51.23 0.0106
2025-07-09 2025-06-30 13F Gartner Common / Ordinary Stock 366651107 2,116 -118 -5.28 855 -8.75 0.0228
2025-04-01 2025-03-31 13F Gartner Common / Ordinary Stock 366651107 2,234 -11 -0.49 938 -13.80 0.0271
2025-01-16 2024-12-31 13F Gartner Common / Ordinary Stock 366651107 2,245 -313 -12.24 1,088 -16.13 0.0305
2024-10-02 2024-09-30 13F Gartner Common / Ordinary Stock 366651107 2,558 37 1.47 1,296 14.49 0.0369
2024-07-02 2024-06-30 13F Gartner Common / Ordinary Stock 366651107 2,521 -233 -8.46 1,132 -13.72 0.0343
2024-04-09 2024-03-31 13F Gartner Common / Ordinary Stock 366651107 2,754 -114 -3.97 1,313 1.47 0.0408
2024-01-03 2023-12-31 13F Gartner Common / Ordinary Stock 366651107 2,868 -56 -1.92 1,294 28.78 0.0434
2023-10-04 2023-09-30 13F Gartner Common / Ordinary Stock 366651107 2,924 -27 -0.91 1,005 -2.81 0.0371
2023-08-02 2023-06-30 13F Gartner Common / Ordinary Stock 366651107 2,951 -155 -4.99 1,034 2.18 0.0372
2023-04-11 2023-03-31 13F Gartner Common / Ordinary Stock 366651107 3,106 -152 -4.67 1,012 101,000.00 0.0387
2023-01-06 2022-12-31 13F Gartner Common / Ordinary Stock 366651107 3,258 -150 -4.40 1 0.0450
2022-10-07 2022-09-30 13F Gartner Common / Ordinary Stock 366651107 3,408 -230 -6.32 1 0.0428
2022-07-07 2022-06-30 13F Gartner Common / Ordinary Stock 366651107 3,638 -4 -0.11 1 -100.00 0.0381
2022-04-08 2022-03-31 13F Gartner Common / Ordinary Stock 366651107 3,642 -43 -1.17 1 0.00 0.0409
2022-02-09 2021-12-31 13F Gartner Common / Ordinary Stock 366651107 3,685 -119 -3.13 1 0.00 0.0457
2021-11-12 2021-09-30 13F Gartner Common / Ordinary Stock 366651107 3,804 -116 -2.96 1 0.0478
2021-08-16 2021-06-30 13F Gartner Common / Ordinary Stock 366651107 3,920 -1 -0.03 1 0.0403
2021-05-17 2021-03-31 13F Gartner Common / Ordinary Stock 366651107 3,921 -127 -3.14 1 0.0337
2021-02-16 2020-12-31 13F Gartner Common / Ordinary Stock 366651107 4,048 -425 -9.50 1 0.0332
2020-11-13 2020-09-30 13F Gartner Common / Ordinary Stock 366651107 4,473 -40 -0.89 1 -100.00 0.0327
2020-08-13 2020-06-30 13F Gartner Common / Ordinary Stock 366651107 4,513 -214 -4.53 548 16.35 0.0353
2020-05-15 2020-03-31 13F Gartner Common / Ordinary Stock 366651107 4,727 -80 -1.66 471 -36.44 0.0376
2020-05-15 2019-12-31 13F Gartner Common / Ordinary Stock 366651107 4,807 208 4.52 741 12.61 0.0458
2019-11-14 2019-09-30 13F Gartner Common / Ordinary Stock 366651107 4,599 8 0.17 658 -10.96 0.0441
2019-08-14 2019-06-30 13F Gartner Common / Ordinary Stock 366651107 4,591 -399 -8.00 739 -2.25 0.0511
2019-05-15 2019-03-31 13F Gartner Common / Ordinary Stock 366651107 4,990 8 0.16 757 18.87 0.0546
2019-02-26 2018-12-31 13F Gartner Common / Ordinary Stock 366651107 4,982 -61 -1.21 637 -20.40 0.0545
2018-11-09 2018-09-30 13F Gartner Common / Ordinary Stock 366651107 5,043 -239 -4.52 799 13.98 0.0593
2018-08-20 2018-06-30 13F Gartner Common / Ordinary Stock 366651107 5,282 -120 -2.22 702 10.39 0.0560
2018-05-21 2018-03-31 13F Gartner Common / Ordinary Stock 366651107 5,402 -2,116 -28.15 635 -31.35 0.0526
2018-03-01 2017-12-31 13F/A-1 Gartner Common / Ordinary Stock 366651107 7,518 -556 -6.89 926 -7.87 0.0767
2018-02-21 2017-12-31 13F iShares Global Infrastructure ETF Exchange Traded Fund 366651107 20,570 12,496 930
2018-02-13 2017-09-30 13F Gartner common 366651107 8,074 -237 -2.85 1,004 -2.14 0.0832
2017-08-14 2017-06-30 13F Gartner common 366651107 8,311 -268 -3.12 1,026 10.80 0.0914
2017-05-02 2017-03-31 13F Gartner common 366651107 8,579 1,478 20.81 926 29.15 0.0870
2017-02-13 2016-12-31 13F Gartner common 366651107 7,101 -596 -7.74 718 -4.27 0.0878
2016-08-10 2016-06-30 13F GARTNER common 366651107 7,697 -685 -8.17 750 0.13 0.0947
2016-05-10 2016-03-31 13F GARTNER common 366651107 8,382 151 1.83 749 0.27 0.1010
2016-02-12 2015-12-31 13F GARTNER common 366651107 8,231 1,695 25.93 747 55.42 0.1068
2015-11-04 2015-09-30 13F GARTNER common 366651107 6,536 2,032 45.12 480 51.42 0.1013
2015-07-29 2015-06-30 13F GARTNER common 366651107 4,504 -4,317 -48.94 318 -57.10 0.0709
2015-05-11 2015-03-31 13F GARTNER common 366651107 8,821 760 9.43 740 9.00 0.1219
2015-02-05 2014-12-31 13F GARTNER common 366651107 8,061 1,525 23.33 679 41.25 0.2194
2014-11-04 2014-09-30 13F GARTNER COMMON STOCK 366651107 6,536 2,107 47.57 480 53.85 0.0954
2014-07-09 2014-06-30 13F GARTNER COMMON STOCK 366651107 4,429 2,215 100.05 312 103.92 0.1234
2014-05-15 2014-03-31 13F GARTNER common 366651107 2,214 1,330 150.45 154 146.77 0.0899
2014-02-14 2013-12-31 13F/A-1 GARTNER COMMON STOCK 366651107 884 884 63 0.0578
2014-02-13 2013-12-31 13F GARTNER COMMON STOCK 366651107 884 63 0.0578
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.