Gartner, Inc.
US ˙ NYSE ˙ US3666511072

SecurityIT / Gartner, Inc.
InstitutionWestpac Banking Corp
Latest Disclosed Ownership1,480 shares
Latest Disclosed Value $ 234,344
Westpac Banking Corp reports 193.07% increase in ownership of IT / Gartner, Inc.

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 1,480 shares of Gartner, Inc. (US:IT) valued at $234,343 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 505 shares of Gartner, Inc.. This represents a change in shares of 193.07% during the quarter. The current value of the position is $243,830 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)
2026-05-11 2026-03-31 13F GARTNER COM 366651107 1,480 975 193.07 234 84.25 0.0082
2026-02-10 2025-12-31 13F GARTNER COM 366651107 505 0 0.00 127 -3.79 0.0080
2025-11-14 2025-09-30 13F/A-1 GARTNER INC USD 0.0005 COM 366651107 505 -2,566 -83.56 133 -89.36 0.0082
2025-11-12 2025-09-30 13F GARTNER INC USD 0.0005 COM 366651107 505 -2,566 133 0.0033
2025-08-11 2025-06-30 13F GARTNER COM 366651107 3,071 -186 -5.71 1,241 -9.22 0.0830
2025-05-13 2025-03-31 13F GARTNER COM 366651107 3,257 2,297 239.27 1,367 193.98 0.1006
2025-02-12 2024-12-31 13F GARTNER COM 366651107 960 -14 -1.44 465 -5.68 0.0309
2024-11-08 2024-09-30 13F GARTNER COM 366651107 974 381 64.25 494 85.34 0.0331
2024-08-14 2024-06-30 13F/A-1 GARTNER COM 366651107 593 92 18.36 266 11.76 0.0211
2024-08-13 2024-06-30 13F GARTNER COM 366651107 449 -52 266 0.0092
2024-05-09 2024-03-31 13F GARTNER COM 366651107 501 -40 -7.39 239 -2.46 0.0182
2024-02-08 2023-12-31 13F GARTNER COM 366651107 541 189 53.69 244 103.33 0.0201
2023-11-13 2023-09-30 13F GARTNER COM 366651107 352 0 0.00 121 -2.44 0.0091
2023-08-10 2023-06-30 13F GARTNER COM 366651107 352 -20,204 -98.29 123 -98.16 0.0087
2023-05-04 2023-03-31 13F GARTNER COM 366651107 20,556 -866 -4.04 6,697 -7.00 0.0900
2023-02-06 2022-12-31 13F GARTNER COM 366651107 21,422 -3,464 -13.92 7,201 4.58 0.1064
2022-11-08 2022-09-30 13F GARTNER COM 366651107 24,886 -1,942 -7.24 6,886 6.14 0.1050
2022-08-10 2022-06-30 13F GARTNER COM 366651107 26,828 325 1.23 6,488 -17.71 0.0845
2022-05-11 2022-03-31 13F GARTNER COM 366651107 26,503 3,034 12.93 7,884 0.47 0.0904
2022-02-08 2021-12-31 13F GARTNER COM 366651107 23,469 727 3.20 7,846 13.55 0.0813
2021-10-27 2021-09-30 13F GARTNER COM 366651107 22,742 16,388 257.92 6,911 349.28 0.0739
2021-08-11 2021-06-30 13F GARTNER COM 366651107 6,354 -472 -6.91 1,539 23.43 0.0155
2021-05-13 2021-03-31 13F GARTNER COM 366651107 6,826 -656 -8.77 1,246 4.01 0.0137
2021-02-11 2020-12-31 13F GARTNER COM 366651107 7,482 -701 -8.57 1,199 17.22 0.0136
2020-11-10 2020-09-30 13F GARTNER COM 366651107 8,183 0 0.00 1,022 3.02 0.0139
2020-08-12 2020-06-30 13F GARTNER COM 366651107 8,183 1,829 28.79 993 56.96 0.0148
2020-05-14 2020-03-31 13F GARTNER COM 366651107 6,354 0 0.00 633 -35.44 0.0109
2020-02-11 2019-12-31 13F GARTNER COM 366651107 6,354 0 0.00 979 7.82 0.0126
2019-11-13 2019-09-30 13F GARTNER COM 366651107 6,354 0 0.00 909 -11.15 0.0126
2019-08-01 2019-06-30 13F GARTNER COM 366651107 6,354 0 0.00 1,023 6.13 0.0156
2019-05-14 2019-03-31 13F GARTNER COM 366651107 6,354 0 0.00 964 18.60 0.0159
2019-02-07 2018-12-31 13F GARTNER COM 366651107 6,354 1,400 28.26 812 3.44 0.0138
2018-11-13 2018-09-30 13F GARTNER COM 366651107 4,954 0 0.00 785 19.30 0.0135
2018-07-18 2018-06-30 13F GARTNER COM 366651107 4,954 0 0.00 658 13.06 0.0127
2018-05-01 2018-03-31 13F GARTNER COM 366651107 4,954 0 0.00 583 -4.59 0.0116
2018-01-18 2017-12-31 13F GARTNER COM 366651107 4,954 0 0.00 610 -0.97 0.0139
2017-10-30 2017-09-30 13F GARTNER COM 366651107 4,954 0 0.00 616 0.82 0.0136
2017-08-09 2017-06-30 13F GARTNER COM 366651107 4,954 0 0.00 612 14.42 0.0135
2017-05-18 2017-03-31 13F/A-1 GARTNER COM 366651107 4,954 -2,291 -31.62 535 -34.64 0.0043
2017-05-11 2017-03-31 13F GARTNER COM 366651107 3,942 352
2017-02-09 2016-12-31 13F GARTNER COM 366651107 7,245 -35 -0.48 817 27.06 0.0077
2016-11-10 2016-09-30 13F GARTNER COM 366651107 7,280 -1,708 -19.00 644 -17.03 0.0070
2016-08-10 2016-06-30 13F GARTNER COM 366651107 8,988 260 2.98 775 -0.51 0.0085
2016-05-13 2016-03-31 13F GARTNER COM 366651107 8,728 -1,081 -11.02 780 -12.37 0.0085
2016-02-11 2015-12-31 13F GARTNER COM 366651107 9,809 31 0.32 890 8.41 0.0098
2015-11-16 2015-09-30 13F/A-1 GARTNER COM 366651107 9,778 3,783 63.10 821 59.53 0.0090
2015-11-12 2015-09-30 13F GARTNER COM 366651107 9,778 821
2015-08-12 2015-06-30 13F GARTNER COM 366651107 5,995 758 14.47 514 -10.45 0.0050
2015-05-12 2015-03-31 13F GARTNER COM 366651107 5,237 948 22.10 575 59.00 0.0050
2015-02-11 2014-12-31 13F GARTNER COM 366651107 4,289 32 0.75 361 15.71 0.0034
2014-11-12 2014-09-30 13F GARTNER COM 366651107 4,257 2,064 94.12 313 102.60 0.0030
2014-08-11 2014-06-30 13F GARTNER COM 366651107 2,193 2,193 155 0.0015
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.