RLI Corp.
US ˙ NYSE ˙ US7496071074

SecurityRLI / RLI Corp.
InstitutionSei Investments Co
Latest Disclosed Ownership256,214 shares
Latest Disclosed Value $ 16,392,644
Sei Investments Co reports 9.89% increase in ownership of RLI / RLI Corp.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 256,214 shares of RLI Corp. (US:RLI) valued at $16,392,572 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 233,153 shares of RLI Corp.. This represents a change in shares of 9.89% during the quarter. The current value of the position is $13,420,489 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)
2026-02-13 2025-12-31 13F RLI COM 749607107 256,214 23,061 9.89 16,393 7.81 0.0162
2025-11-13 2025-09-30 13F RLI COM 749607107 233,153 -38,846 -14.28 15,206 -22.59 0.0164
2025-08-14 2025-06-30 13F RLI COM 749607107 271,999 96,717 55.18 19,643 39.53 0.0228
2025-05-14 2025-03-31 13F/A-1 RLI COM 749607107 175,282 99,427 131.08 14,079 12.61 0.0181
2025-05-13 2025-03-31 13F RLI COM 749607107 84,810 8,955 12,577 0.0137
2025-02-11 2024-12-31 13F RLI COM 749607107 75,855 13,080 20.84 12,502 28.52 0.0161
2024-11-12 2024-09-30 13F RLI COM 749607107 62,775 24,623 64.54 9,727 81.27 0.0126
2024-08-13 2024-06-30 13F RLI COM 749607107 38,152 8,185 27.31 5,367 20.61 0.0076
2024-05-07 2024-03-31 13F RLI COM 749607107 29,967 -9,526 -24.12 4,449 -15.37 0.0065
2024-02-14 2023-12-31 13F RLI COM 749607107 39,493 11,608 41.63 5,257 38.74 0.0084
2023-11-14 2023-09-30 13F RLI COM 749607107 27,885 471 1.72 3,789 1.28 0.0068
2023-08-11 2023-06-30 13F RLI COM 749607107 27,414 -397 -1.43 3,741 1.22 0.0065
2023-05-12 2023-03-31 13F RLI COM 749607107 27,811 11,552 71.05 3,696 73.20 0.0069
2023-02-10 2022-12-31 13F RLI COM 749607107 16,259 -12,961 -44.36 2,134 -28.68 0.0047
2022-11-14 2022-09-30 13F RLI COM 749607107 29,220 -2,600 -8.17 2,992 -19.35 0.0067
2022-08-15 2022-06-30 13F RLI COM 749607107 31,820 19,795 164.62 3,710 178.95 0.0080
2022-05-13 2022-03-31 13F RLI COM 749607107 12,025 -6,736 -35.90 1,330 -36.76 0.0027
2022-02-14 2021-12-31 13F RLI COM 749607107 18,761 0 0.00 2,103 11.80 0.0039
2021-11-12 2021-09-30 13F RLI COM 749607107 18,761 -1,000 -5.06 1,881 -9.00 0.0039
2021-08-06 2021-06-30 13F RLI COM 749607107 19,761 0 0.00 2,067 -6.26 0.0046
2021-05-12 2021-03-31 13F RLI COM 749607107 19,761 0 0.00 2,205 7.14 0.0056
2021-02-08 2020-12-31 13F RLI COM 749607107 19,761 0 0.00 2,058 24.35 0.0053
2020-12-04 2020-09-30 13F/A-1 RLI COM 749607107 19,761 0 0.00 1,655 2.03 0.0048
2020-11-06 2020-09-30 13F RLI COM 749607107 19,761 0 1,655 3,984.8720
2020-08-17 2020-06-30 13F/A-1 RLI COM 749607107 19,761 0 0.00 1,622 -6.67 0.0050
2020-08-11 2020-06-30 13F RLI COM 749607107 10,855 -8,906 977 2,650.1645
2020-05-14 2020-03-31 13F RLI COM 749607107 19,761 8,906 82.05 1,738 77.89 0.0064
2020-02-06 2019-12-31 13F RLI COM 749607107 10,855 0 0.00 977 -3.17 0.0029
2019-11-12 2019-09-30 13F RLI COM 749607107 10,855 0 0.00 1,009 8.49 0.0026
2019-08-14 2019-06-30 13F RLI COM 749607107 10,855 0 0.00 930 19.38 0.0030
2019-05-15 2019-03-31 13F RLI COM 749607107 10,855 0 0.00 779 -8.68 0.0026
2019-02-13 2018-12-31 13F RLI COM 749607107 10,855 0 0.00 853 0.00 0.0030
2018-11-08 2018-09-30 13F RLI COM 749607107 10,855 -7,250 -40.04 853 -28.80 0.0031
2018-08-03 2018-06-30 13F RLI COM 749607107 18,105 -2,240 -11.01 1,198 -7.13 0.0041
2018-05-11 2018-03-31 13F RLI COM 749607107 20,345 -8,252 -28.86 1,290 -25.65 0.0049
2018-02-08 2017-12-31 13F RLI COM 749607107 28,597 2,415 9.22 1,735 15.51 0.0060
2017-11-06 2017-09-30 13F RLI COM 749607107 26,182 2,912 12.51 1,502 18.17 0.0053
2017-07-31 2017-06-30 13F RLI COM 749607107 23,270 2,978 14.68 1,271 4.35 0.0051
2017-05-05 2017-03-31 13F RLI COM 749607107 20,292 7,559 59.37 1,218 51.49 0.0053
2017-02-02 2016-12-31 13F RLI COM 749607107 12,733 12,713 63,565.00 804 80,300.00 0.0039
2016-11-04 2016-09-30 13F RLI COM 749607107 20 0 0.00 1 0.00 0.0000
2016-08-11 2016-06-30 13F RLI COM 749607107 20 0 0.00 1 0.00 0.0000
2016-05-10 2016-03-31 13F/A-1 RLI COM 749607107 20 -2 -9.09 1 0.00 0.0000
2016-02-03 2015-12-31 13F RLI COM 749607107 22 -2 -8.33 1 0.00 0.0000
2015-11-02 2015-09-30 13F/A-1 RLI COM 749607107 24 -3 -11.11 1 0.00 0.0000
2015-10-30 2015-09-30 13F RLI COM 749607107 24 2
2015-08-07 2015-06-30 13F/A-1 RLI COM 749607107 27 0 0.00 1 0.00 0.0000
2015-08-04 2015-06-30 13F RLI COM 749607107 27 0 1 0.0000
2015-05-14 2015-03-31 13F/A-1 RLI COM 749607107 27 0 0.00 1 0.00 0.0000
2015-05-01 2015-03-31 13F RGC RES COM 749607107 27 1
2015-02-10 2014-12-31 13F RLI COM 749607107 27 27 1 0.0000
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.