FactSet 리서치 시스템즈 주식회사
MX ˙ BMV ˙ US3030751057
SecurityMX:FDS / FactSet Research Systems Inc.
InstitutionMattern Capital Management, Llc
Latest Disclosed Ownership46,708 shares
Latest Disclosed Value $ 10,135,169
Mattern Capital Management, Llc reports 53.69% increase in ownership of FDS / FactSet Research Systems Inc.

On May 4, 2026 - Mattern Capital Management, Llc filed a 13F-HR form disclosing ownership of 46,708 shares of FactSet Research Systems Inc. (MX:FDS) valued at $10,135,169 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 30,391 shares of FactSet Research Systems Inc.. This represents a change in shares of 53.69% 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)
2026-05-04 2026-03-31 13F FACTSET RESH SYS COM 303075105 46,708 16,317 53.69 10,135 14.92 1.2140
2026-01-29 2025-12-31 13F FACTSET RESH SYS COM 303075105 30,391 9,971 48.83 8,819 50.75 1.0413
2025-10-21 2025-09-30 13F FACTSET RESH SYS COM 303075105 20,420 545 2.74 5,850 -34.19 0.6878
2025-07-21 2025-06-30 13F FACTSET RESH SYS COM 303075105 19,875 233 1.19 8,890 -0.46 1.0679
2025-04-23 2025-03-31 13F FACTSET RESH SYS COM 303075105 19,642 169 0.87 8,930 -4.51 1.1370
2025-02-03 2024-12-31 13F FACTSET RESH SYS COM 303075105 19,473 649 3.45 9,352 8.04 1.2188
2024-10-24 2024-09-30 13F FACTSET RESH SYS COM 303075105 18,824 111 0.59 8,656 13.31 1.0894
2024-08-02 2024-06-30 13F FACTSET RESH SYS COM 303075105 18,713 350 1.91 7,640 -8.44 1.0555
2024-05-14 2024-03-31 13F FACTSET RESH SYS COM 303075105 18,363 780 4.44 8,344 -0.52 1.1330
2024-02-14 2023-12-31 13F FACTSET RESH SYS COM 303075105 17,583 431 2.51 8,388 11.84 1.2194
2023-11-08 2023-09-30 13F FACTSET RESH SYS COM 303075105 17,152 652 3.95 7,500 13.45 1.2133
2023-08-08 2023-06-30 13F FACTSET RESH SYS COM 303075105 16,500 757 4.81 6,611 1.16 1.0731
2023-05-12 2023-03-31 13F FACTSET RESH SYS COM 303075105 15,743 420 2.74 6,535 6.30 1.1528
2023-02-06 2022-12-31 13F FACTSET RESH SYS COM 303075105 15,323 -284 -1.82 6,148 -1.57 1.1367
2022-11-08 2022-09-30 13F FACTSET RESH SYS COM 303075105 15,607 -348 -2.18 6,245 1.78 1.3010
2022-08-08 2022-06-30 13F FACTSET RESH SYS COM 303075105 15,955 49 0.31 6,136 -11.15 1.2133
2022-05-03 2022-03-31 13F FACTSET RESH SYS COM 303075105 15,906 142 0.90 6,906 -9.86 1.2349
2022-02-03 2021-12-31 13F FACTSET RESH SYS COM 303075105 15,764 -285 -1.78 7,661 20.91 1.3400
2021-11-01 2021-09-30 13F FACTSET RESH SYS COM 303075105 16,049 428 2.74 6,336 20.87 1.2506
2021-08-03 2021-06-30 13F FACTSET RESH SYS COM 303075105 15,621 681 4.56 5,242 13.71 1.0364
2021-05-17 2021-03-31 13F FACTSET RESH SYS COM 303075105 14,940 528 3.66 4,610 -3.80 0.9970
2021-02-03 2020-12-31 13F FACTSET RESH SYS COM 303075105 14,412 213 1.50 4,792 0.78 1.1484
2020-11-16 2020-09-30 13F FACTSET RESH SYS COM 303075105 14,199 -44 -0.31 4,755 1.65 1.2424
2020-08-07 2020-06-30 13F FACTSET RESH SYS COM 303075105 14,243 -25 -0.18 4,678 25.79 1.3577
2020-05-11 2020-03-31 13F FACTSET RESH SYS COM 303075105 14,268 -221 -1.53 3,719 -4.32 1.2656
2020-02-13 2019-12-31 13F FACTSET RESH SYS COM 303075105 14,489 14,489 3,887 1.0753
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.