FactSet Research Systems Inc.
US ˙ NYSE ˙ US3030751057

SecurityFDS / FactSet Research Systems Inc.
InstitutionInterval Partners, LP
Latest Disclosed Ownership21,522 shares
Latest Disclosed Value $ 4,670,059
Interval Partners, LP ownership in FDS / FactSet Research Systems Inc.

On May 15, 2026 - Interval Partners, LP filed a 13F-HR form disclosing ownership of 21,522 shares of FactSet Research Systems Inc. (US:FDS) valued at $4,670,059 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 82,680 shares of FactSet Research Systems Inc.. This represents a change in shares of -73.97% during the quarter. The current value of the position is $5,454,536 USD.

Interval Partners, LP has a history of taking positions in derivatives of the underlying security (FDS) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 20,800 of underlying shares valued at $4,513,392 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

FDS / FactSet Research Systems Inc. Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F FACTSET RESH SYS COM 303075105 21,522 -61,158 -73.97 4,670 -80.54 0.1223
2026-02-17 2025-12-31 13F FACTSET RESH SYS COM 303075105 82,680 55,465 203.80 23,993 207.75 0.4295
2025-11-14 2025-09-30 13F FACTSET RESH SYS COM 303075105 27,215 -6,100 -18.31 7,797 -47.68 0.1273
2025-08-14 2025-06-30 13F FACTSET RESH SYS COM 303075105 33,315 9,946 42.56 14,901 40.26 0.2527
2025-05-15 2025-03-31 13F FACTSET RESH SYS COM 303075105 23,369 3,007 14.77 10,624 8.64 0.2228
2025-02-14 2024-12-31 13F FACTSET RESH SYS COM 303075105 20,362 20,362 9,779 0.1920
2023-02-14 2022-12-31 13F FACTSET RESH SYS COM 303075105 0 -7,000 -100.00 0 -100.00
2022-11-14 2022-09-30 13F FACTSET RESH SYS COM 303075105 7,000 7,000 2,801 0.1236
2021-11-15 2021-09-30 13F FACTSET RESH SYS COM 303075105 0 -6,000 -100.00 0 -100.00
2021-08-16 2021-06-30 13F FACTSET RESH SYS COM 303075105 6,000 6,000 2,014 0.0831
2017-02-14 2016-12-31 13F FACTSET RESEARCH SYSTEMS COM 303075105 0 -12,000 -100.00 0 -100.00
2016-11-14 2016-09-30 13F FACTSET RESEARCH SYSTEMS COM 303075105 12,000 12,000 1,945 0.1234
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-17 2025-12-31 13F FACTSET RESH SYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F FACTSET RESH SYS COM Call 15,900 4,555 n/a n/a n/a
2023-11-14 2023-09-30 13F FACTSET RESH SYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F FACTSET RESH SYS COM Call 3,000 1,202 n/a n/a n/a
2023-02-14 2022-12-31 13F FACTSET RESH SYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F FACTSET RESH SYS COM Call 7,500 3,001 n/a n/a n/a
2020-02-14 2019-12-31 13F FACTSET RESH SYS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F FACTSET RESH SYS COM Call 5,000 25.00 1,215 6.02 n/a n/a n/a
2019-08-12 2019-06-30 13F FACTSET RESH SYS COM Call 4,000 1,146 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F FACTSET RESH SYS COM Put 20,800 -28.28 4,513 -46.37 n/a n/a n/a
2026-02-17 2025-12-31 13F FACTSET RESH SYS COM Put 29,000 8,416 n/a n/a n/a
2025-11-14 2025-09-30 13F FACTSET RESH SYS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F FACTSET RESH SYS COM Put 21,500 9,617 n/a n/a n/a
2024-05-15 2024-03-31 13F FACTSET RESH SYS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F FACTSET RESH SYS COM Put 85 112.50 4,055 131.79 n/a n/a n/a
2023-11-14 2023-09-30 13F FACTSET RESH SYS COM Put 40 1,749 n/a n/a n/a
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.