FactSet Research Systems Inc.
MX ˙ BMV ˙ US3030751057
SecurityMX:FDS / FactSet Research Systems Inc.
InstitutionRussell Investments Group, Ltd.
Latest Disclosed Ownership21,773 shares
Latest Disclosed Value $ 4,727,510
Russell Investments Group, Ltd. reports 23.17% decrease in ownership of FDS / FactSet Research Systems Inc.

On May 8, 2026 - Russell Investments Group, Ltd. filed a 13F-HR form disclosing ownership of 21,773 shares of FactSet Research Systems Inc. (MX:FDS) valued at $4,727,510 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,340 shares of FactSet Research Systems Inc.. This represents a change in shares of -23.17% 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)
2026-05-08 2026-03-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 21,773 -6,567 -23.17 4,728 -42.54 0.0051
2026-02-17 2025-12-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 28,340 -6,966 -19.73 8,227 -18.75 0.0090
2025-11-13 2025-09-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 35,306 2,956 9.14 10,127 -29.93 0.0115
2025-08-13 2025-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 32,350 -10,119 -23.83 14,452 -25.09 0.0184
2025-05-13 2025-03-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 42,469 11,197 35.81 19,290 28.40 0.0265
2025-02-13 2024-12-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 31,272 -10,110 -24.43 15,023 -21.04 0.0208
2024-11-13 2024-09-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 41,382 -1,844 -4.27 19,028 7.67 0.0276
2024-08-08 2024-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 43,226 -752 -1.71 17,672 -11.46 0.0285
2024-05-08 2024-03-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 43,978 11,257 34.40 19,959 27.87 0.0315
2024-02-05 2023-12-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 32,721 -3,228 -8.98 15,609 -0.81 0.0278
2023-11-13 2023-09-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 35,949 2,895 8.76 15,736 18.98 0.0312
2023-08-10 2023-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 33,054 -2,086 -5.94 13,225 -9.23 0.0255
2023-05-09 2023-03-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 35,140 -27,637 -44.02 14,571 -42.19 0.0286
2023-02-08 2022-12-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 62,777 -15,662 -19.97 25,205 -19.65 0.0519
2022-11-04 2022-09-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 78,439 43,590 125.08 31,369 134.18 0.0690
2022-07-29 2022-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 34,849 5,147 17.33 13,395 3.78 0.0273
2022-05-05 2022-03-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 29,702 7,309 32.64 12,907 18.69 0.0224
2022-01-21 2021-12-31 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 22,393 10 0.04 10,875 23.13 0.0174
2021-11-08 2021-09-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 22,383 385 1.75 8,832 19.67 0.0149
2021-08-04 2021-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 21,998 -1,476 -6.29 7,380 1.88 0.0123
2021-05-10 2021-03-31 13F FactSet Research Systems Common Stock 303075105 23,474 1,347 6.09 7,244 -1.25 0.0128
2021-02-08 2020-12-31 13F FactSet Research Systems Common Stock 303075105 22,127 -8,702 -28.23 7,336 -28.88 0.0145
2020-11-09 2020-09-30 13F FactSet Research Systems Common Stock 303075105 30,829 20,616 201.86 10,315 208.37 0.0222
2020-08-05 2020-06-30 13F FACTSET RESEARCH SYSTEMS Common Stock 303075105 10,213 597 6.21 3,345 32.58 0.0075
2020-05-06 2020-03-31 13F/A-1 FactSet Research Systems Common Stock 303075105 9,616 -799 -7.67 2,523 -9.54 0.0065
2020-05-06 2020-03-31 13F FactSet Research Systems Common Stock 303075105 9,616 -799 2,523 1,377.9622
2020-01-29 2019-12-31 13F FactSet Research Systems Common Stock 303075105 10,415 -22,551 -68.41 2,789 -65.16 0.0052
2019-11-01 2019-09-30 13F FactSet Research Systems Common Stock 303075105 32,966 2,675 8.83 8,006 -7.74 0.0155
2019-08-09 2019-06-30 13F FactSet Research Systems Common Stock 303075105 30,291 -950 -3.04 8,678 11.89 0.0162
2019-05-13 2019-03-31 13F FactSet Research Systems Common Stock 303075105 31,241 10,482 50.49 7,756 86.67 0.0143
2019-02-11 2018-12-31 13F FactSet Research Systems Common Stock 303075105 20,759 3,552 20.64 4,155 7.92 0.0093
2018-10-26 2018-09-30 13F FactSet Research Systems Common Stock 303075105 17,207 -5,645 -24.70 3,850 -14.95 0.0073
2018-08-08 2018-06-30 13F FactSet Research Systems Common Stock 303075105 22,852 -63 -0.27 4,527 -0.90 0.0094
2018-05-11 2018-03-31 13F FACTSET RESH SYS INC COM Common Stocks 303075105 22,915 -1,638 -6.67 4,568 -3.63 0.0077
2018-02-06 2017-12-31 13F FACTSET RESH SYS INC COM Common Stocks 303075105 24,553 8,184 50.00 4,740 60.79 0.0080
2017-11-07 2017-09-30 13F FACTSET RESH SYS INC COM Common Stocks 303075105 16,369 194 1.20 2,948 9.63 0.0050
2017-07-25 2017-06-30 13F FACTSET RESH SYS INC COM Common Stocks 303075105 16,175 250 1.57 2,689 2.36 0.0048
2017-04-26 2017-03-31 13F FACTSET RESH SYS INC COM Common Stocks 303075105 15,925 -5,723 -26.44 2,627 -25.05 0.0048
2017-01-23 2016-12-31 13F FACTSET RESH SYS INC COM Common Stocks 303075105 21,648 21,648 3,505 0.0068
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.