Stewart Information Services Corporation
US ˙ NYSE ˙ US8603721015

SecuritySTC / Stewart Information Services Corporation
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Simplex Trading, Llc ownership in STC / Stewart Information Services Corporation

On February 11, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 0 shares of Stewart Information Services Corporation (US:STC) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 6,324 shares of Stewart Information Services Corporation. The current value of the position is $0 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (STC) 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 0 of underlying shares valued at $0 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.

STC / Stewart Information Services Corporation 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)
2026-02-11 2025-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -100.00 0
2025-11-12 2025-09-30 13F STEWART INFORMATION SVCS COR COM 860372101 6,324 5,754 1,009.47 0 0.0002
2025-08-05 2025-06-30 13F STEWART INFORMATION SVCS COR COM 860372101 570 403 241.32 0 0.0000
2025-05-12 2025-03-31 13F STEWART INFORMATION SVCS COR COM 860372101 167 -137 -45.07 0 0.0000
2025-02-11 2024-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 304 304 0 0.0000
2023-02-02 2022-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -11 -100.00 0 0.0000
2022-11-04 2022-09-30 13F STEWART INFORMATION SVCS COR COM 860372101 11 11 0 0.0000
2022-05-02 2022-03-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -180 -100.00 0 -100.00
2022-02-23 2021-12-31 13F/A-1 STEWART INFORMATION SVCS COR COM 860372101 180 180 14 0.0000
2020-07-13 2020-06-30 13F STEWART INFORMATION SVCS COR COM 860372101 0 -246 -100.00 0 -100.00
2020-04-29 2020-03-31 13F STEWART INFORMATION SVCS COR COM 860372101 246 -2,811 -91.95 6 -95.16 0.0000
2020-02-05 2019-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 3,057 3,057 1,142.68 124 1,966.67 0.0003
2019-04-18 2019-03-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -268 -100.00 0 -100.00
2019-01-16 2018-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 268 -600 -69.12 11 -71.79 0.0000
2018-10-23 2018-09-30 13F STEWART INFORMATION SVCS COR COM 860372101 868 26 3.09 39 8.33 0.0001
2018-07-30 2018-06-30 13F STEWART INFORMATION SVCS COR COM 860372101 842 -1,002 -54.34 36 -55.56 0.0001
2018-04-26 2018-03-31 13F STEWART INFORMATION SVCS COR COM 860372101 1,844 1,686 1,067.09 81 1,250.00 0.0036
2018-01-10 2017-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 158 158 -91.43 6 -92.59 0.0003
2017-01-11 2016-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -10,963 -100.00 0 -100.00
2016-10-07 2016-09-30 13F STEWART INFORMATION SVCS COR COM 860372101 10,963 10,963 0.00 487 0.0330
2016-01-20 2015-12-31 13F STEWART INFORMATION SVCS COR COM 860372101 0 -415 -100.00 0 -100.00
2015-10-08 2015-09-30 13F STEWART INFORMATION SVCS COR COM 860372101 415 -1 -0.24 16 0.00 0.0012
2015-07-08 2015-06-30 13F STEWART INFORMATION SVCS COR COM 860372101 416 416 16 0.0013
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
(%)
2026-02-11 2025-12-31 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 n/a n/a n/a
2025-11-12 2025-09-30 13F STEWART INFORMATION SVCS COR CALL Call 200 0.00 0 n/a n/a n/a
2025-08-05 2025-06-30 13F STEWART INFORMATION SVCS COR CALL Call 200 0 n/a n/a n/a
2024-04-25 2024-03-31 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 n/a n/a n/a
2024-02-02 2023-12-31 13F STEWART INFORMATION SVCS COR CALL Call 200 0 n/a n/a n/a
2023-02-02 2022-12-31 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F STEWART INFORMATION SVCS COR CALL Call 100 -66.67 4 -71.43 n/a n/a n/a
2022-08-03 2022-06-30 13F STEWART INFORMATION SVCS COR CALL Call 300 14 n/a n/a n/a
2022-05-02 2022-03-31 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-23 2021-12-31 13F/A STEWART INFORMATION SVCS COR CALL Call 500 150.00 39 254.55 n/a n/a n/a
2022-02-04 2021-12-31 13F STEWART INFORMATION SVCS COR CALL Call 200 11 n/a n/a n/a
2021-10-28 2021-09-30 13F STEWART INFORMATION SVCS COR CALL Call 200 0.00 11 0.00 n/a n/a n/a
2021-08-12 2021-06-30 13F STEWART INFORMATION SVCS COR CALL Call 200 589.66 11 -92.67 n/a n/a n/a
2021-04-26 2021-03-31 13F STEWART INFORMATION SVCS COR CALL Call 29 38.10 150 48.51 n/a n/a n/a
2021-02-02 2020-12-31 13F STEWART INFORMATION SVCS COR CALL Call 21 -12.50 101 -2.88 n/a n/a n/a
2020-10-14 2020-09-30 13F STEWART INFORMATION SVCS COR CALL Call 24 -27.27 104 -2.80 n/a n/a n/a
2020-07-13 2020-06-30 13F STEWART INFORMATION SVCS COR CALL Call 33 37.50 107 2.88 n/a n/a n/a
2020-04-28 2020-03-31 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-05 2019-12-31 13F STEWART INFORMATION SVCS COR CALL Call 2 -50.00 8 -46.67 n/a n/a n/a
2019-10-15 2019-09-30 13F STEWART INFORMATION SVCS COR CALL Call 4 300.00 15 275.00 n/a n/a n/a
2019-07-26 2019-06-30 13F STEWART INFORMATION SVCS COR CALL Call 1 -75.00 4 -73.33 n/a n/a n/a
2017-07-12 2017-06-30 13F STEWART INFORMATION SVCS COR CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-04-21 2017-03-31 13F STEWART INFORMATION SVCS COR CALL Call 3 0 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
(%)
2023-02-02 2022-12-31 13F STEWART INFORMATION SVCS COR PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F STEWART INFORMATION SVCS COR PUT Put 300 200.00 13 225.00 n/a n/a n/a
2022-08-03 2022-06-30 13F STEWART INFORMATION SVCS COR PUT Put 100 0.00 4 -33.33 n/a n/a n/a
2022-05-02 2022-03-31 13F STEWART INFORMATION SVCS COR PUT Put 100 -66.67 6 -64.71 n/a n/a n/a
2022-02-04 2021-12-31 13F STEWART INFORMATION SVCS COR PUT Put 300 0.00 17 0.00 n/a n/a n/a
2021-10-28 2021-09-30 13F STEWART INFORMATION SVCS COR PUT Put 300 0.00 17 0.00 n/a n/a n/a
2021-08-12 2021-06-30 13F STEWART INFORMATION SVCS COR PUT Put 300 9,900.00 17 13.33 n/a n/a n/a
2021-04-26 2021-03-31 13F STEWART INFORMATION SVCS COR PUT Put 3 0.00 15 7.14 n/a n/a n/a
2021-02-02 2020-12-31 13F STEWART INFORMATION SVCS COR PUT Put 3 -70.00 14 -67.44 n/a n/a n/a
2020-10-14 2020-09-30 13F STEWART INFORMATION SVCS COR PUT Put 10 233.33 43 207.14 n/a n/a n/a
2020-07-13 2020-06-30 13F STEWART INFORMATION SVCS COR PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-04-29 2020-03-31 13F STEWART INFORMATION SVCS COR PUT Put 2 5 n/a n/a n/a
2020-02-05 2019-12-31 13F STEWART INFORMATION SVCS COR PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-10-15 2019-09-30 13F STEWART INFORMATION SVCS COR PUT Put 6 -89.09 23 -89.64 n/a n/a n/a
2019-07-26 2019-06-30 13F STEWART INFORMATION SVCS COR PUT Put 55 -53.78 222 -56.30 n/a n/a n/a
2019-04-18 2019-03-31 13F STEWART INFORMATION SVCS COR PUT Put 119 495.00 508 519.51 n/a n/a n/a
2019-01-16 2018-12-31 13F STEWART INFORMATION SVCS COR PUT Put 20 -33.33 82 -39.26 n/a n/a n/a
2018-10-23 2018-09-30 13F STEWART INFORMATION SVCS COR PUT Put 30 -71.43 135 -70.13 n/a n/a n/a
2018-07-30 2018-06-30 13F STEWART INFORMATION SVCS COR PUT Put 105 25.00 452 8,940.00 n/a n/a n/a
2018-04-26 2018-03-31 13F STEWART INFORMATION SVCS COR PUT Put 84 600.00 5 66.67 n/a n/a n/a
2018-01-10 2017-12-31 13F STEWART INFORMATION SVCS COR PUT Put 12 0.00 3 -40.00 n/a n/a n/a
2017-10-25 2017-09-30 13F STEWART INFORMATION SVCS COR PUT Put 12 0.00 0 -100.00 n/a n/a n/a
2017-01-11 2016-12-31 13F STEWART INFORMATION SVCS COR PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-10-07 2016-09-30 13F STEWART INFORMATION SVCS COR PUT Put 226 32 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.