Octave Specialty Group Inc
OSG- Exchange
- NYSE
- Industry
- Surety Insurance
- SEC CIK
- 0000874501
No open-market purchases or sales by Octave Specialty Group Inc insiders were filed in the last 90 days; 147 institutions reported holding it in 13F filings for Q2 2026, worth $187.6M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Octave Specialty Group Inc as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 147
- −28 vs. Q1 2025
- Shares held
- 37.0M
- −580.5K (−1.5%) vs. Q1 2025
- Total value
- $262.5M
- −$65.1M (−19.9%) vs. Q1 2025
- New holders
- 31
- 47 more added
- Sold out
- 59
- 50 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OSG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 147 | $187.6M |
| Q1 2026 | 148 | $151.4M |
| Q4 2025 | 144 | $270.0M |
| Q3 2025 | 130 | $303.6M |
| Q2 2025 | 147 | $262.5M |
| Q1 2025 | 176 | $327.5M |
| Q4 2024 | 181 | $522.4M |
| Q3 2024 | 180 | $449.6M |
| Q2 2024 | 182 | $495.9M |
| Q1 2024 | 172 | $591.5M |
| Q4 2023 | 174 | $628.4M |
| Q3 2023 | 167 | $438.7M |
| Q2 2023 | 160 | $529.6M |
| Q1 2023 | 160 | $596.2M |
| Q4 2022 | 167 | $600.4M |
| Q3 2022 | 154 | $400.7M |
| Q2 2022 | 141 | $386.6M |
| Q1 2022 | 150 | $392.1M |
| Q4 2021 | 135 | $598.9M |
| Q3 2021 | 133 | $516.2M |
| Q2 2021 | 126 | $565.0M |
| Q1 2021 | 140 | $611.7M |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,588,054 | $32.6M | 0.00% | −306,626−6.3% | Reduced |
| Vanguard Group Inc | 2,568,440 | $18.2M | 0.00% | −92,442−3.5% | Reduced |
| Dimensional Fund Advisors LP | 2,395,737 | $17.0M | 0.00% | −161,143−6.3% | Reduced |
| FMR LLC | 1,532,645 | $10.9M | 0.00% | −3,026−0.2% | Reduced |
| Continental General Insurance Co | 1,218,349 | $8.65M | 2.22% | +1,218,349 | New |
| Gendell Jeffrey L | 1,198,420 | $8.51M | 0.23% | +596,134+99.0% | Added |
| Geode Capital Management, LLC | 1,122,616 | $7.97M | 0.00% | +27,670+2.5% | Added |
| Citadel Advisors LLC | 1,118,761 | $7.94M | 0.01% | +16,039+1.5% | Added |
| Bain Capital Credit, LP | 1,108,012 | $7.87M | 2.86% | 00.0% | Unchanged |
| Millennium Management LLC | 996,041 | $7.07M | 0.01% | +487,355+95.8% | Added |
| State Street Corp | 958,855 | $6.81M | 0.00% | −73,439−7.1% | Reduced |
| Susquehanna International Group, LLP | 940,583 | $6.68M | 0.01% | −239,974−20.3% | Reduced |
| Prescott Group Capital Management, L.L.C. | 875,977 | $6.22M | 0.73% | +433,613+98.0% | Added |
| Hotchkis & Wiley Capital Management LLC | 793,500 | $5.63M | 0.02% | +235,820+42.3% | Added |
| Repertoire Partners LP | 721,188 | $5.12M | 86.09% | −452,686−38.6% | Reduced |
| Wolf Hill Capital Management, LP | 693,444 | $4.92M | 0.41% | 00.0% | Unchanged |
| Marshall Wace, LLP | 648,155 | $4.60M | 0.01% | +442,750+215.5% | Added |
| Deutsche Bank AG | 645,360 | $4.58M | 0.00% | −77,890−10.8% | Reduced |
| Third Avenue Management LLC | 603,391 | $4.28M | 0.88% | +236,930+64.7% | Added |
| Bracebridge Capital, LLC | 579,234 | $4.11M | 2.19% | 00.0% | Unchanged |
| Jane Street Group, LLC | 512,443 | $3.64M | 0.01% | −211,651−29.2% | Reduced |
| Goldman Sachs Group Inc | 479,383 | $3.40M | 0.00% | −200,796−29.5% | Reduced |
| Nuveen, LLC | 466,978 | $3.32M | 0.00% | +184,321+65.2% | Added |
| Squarepoint Ops LLC | 466,369 | $3.31M | 0.01% | +233,986+100.7% | Added |
| Morgan Stanley | 457,631 | $3.25M | 0.00% | −400,409−46.7% | Reduced |
| Barclays PLC | 454,827 | $3.23M | 0.00% | −34,919−7.1% | Reduced |
| American Century Companies Inc | 438,335 | $3.11M | 0.00% | −417,926−48.8% | Reduced |
| Northern Trust Corp | 388,921 | $2.76M | 0.00% | −72,335−15.7% | Reduced |
| Charles Schwab Investment Management Inc | 387,959 | $2.75M | 0.00% | +9,195+2.4% | Added |
| UBS Group AG | 360,265 | $2.56M | 0.00% | +218,334+153.8% | Added |
| Y-Intercept (Hong Kong) Ltd | 350,701 | $2.49M | 0.06% | +204,255+139.5% | Added |
| D. E. Shaw & Co., Inc. | 335,647 | $2.38M | 0.00% | −75,823−18.4% | Reduced |
| Group One Trading, L.P. | 321,724 | $2.28M | 0.07% | −19,744−5.8% | Reduced |
| Bridgeway Capital Management, LLC | 317,249 | $2.25M | 0.05% | +12,122+4.0% | Added |
| Trexquant Investment LP | 316,960 | $2.25M | 0.03% | +155,864+96.8% | Added |
| Tudor Investment Corp Et Al | 305,702 | $2.17M | 0.02% | +28,873+10.4% | Added |
| Immersion Corp | 300,000 | $2.13M | 1.08% | +300,000 | New |
| Cubist Systematic Strategies, LLC | 299,948 | $2.13M | 0.02% | +129,305+75.8% | Added |
| Schonfeld Strategic Advisors LLC | 285,581 | $2.03M | 0.02% | −236,903−45.3% | Reduced |
| Empowered Funds, LLC | 207,249 | $1.47M | 0.02% | +12,122+6.2% | Added |
| Harbor Advisors LLC | 196,382 | $1.39M | 0.23% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 186,100 | $1.32M | 0.00% | +14,600+8.5% | Added |
| Caption Management, LLC | 176,074 | $1.25M | 0.11% | −187,008−51.5% | Reduced |
| Invesco Ltd. | 170,436 | $1.21M | 0.00% | −10,059−5.6% | Reduced |
| Bank of America Corp | 166,265 | $1.18M | 0.00% | −17,373−9.5% | Reduced |
| Ameriprise Financial Inc | 164,805 | $1.17M | 0.00% | +65,253+65.5% | Added |
| Walleye Trading LLC | 154,159 | $1.09M | 0.03% | −143,339−48.2% | Reduced |
| Bank of New York Mellon Corp | 141,935 | $1.01M | 0.00% | −2,138−1.5% | Reduced |
| IMC-Chicago, LLC | 141,026 | $1.00M | 0.03% | +46,223+48.8% | Added |
| VELA Investment Management, LLC | 122,770 | $871.7K | 0.26% | +30,358+32.9% | Added |
| BNP Paribas Arbitrage, SA | 119,468 | $848.2K | 0.00% | +98,402+467.1% | Added |
| HRT Financial LP | 119,016 | $845.0K | 0.00% | −282,256−70.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 111,053 | $788.5K | 0.00% | +79,854+256.0% | Added |
| Nebula Research & Development LLC | 107,124 | $760.6K | 0.06% | +34,022+46.5% | Added |
| HSBC Holdings PLC | 97,348 | $674.8K | 0.00% | −118,087−54.8% | Reduced |
| Norges Bank | 75,000 | $532.5K | 0.00% | −188,100−71.5% | Reduced |
| Rhumbline Advisers | 74,916 | $531.9K | 0.00% | +5,376+7.7% | Added |
| Empirical Finance, LLC | 72,182 | $512.5K | 0.03% | +72,182 | New |
| Public Sector Pension Investment Board | 72,000 | $511.2K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 71,808 | $509.8K | 0.00% | +487+0.7% | Added |
| Caxton Associates LLP | 65,647 | $466.1K | 0.01% | 00.0% | Unchanged |
| Virtu Financial LLC | 62,840 | $446.0K | 0.02% | +62,840 | New |
| Aurelius Capital Management, LP | 60,546 | $429.9K | 2.92% | +60,546 | New |
| State of Wisconsin Investment Board | 59,544 | $422.8K | 0.00% | +59,544 | New |
| Price T Rowe Associates Inc | 52,205 | $371.0K | 0.00% | +3,332+6.8% | Added |
| Royal Bank of Canada | 52,209 | $371.0K | 0.00% | +49,197+1,633.4% | Added |
| AQR Capital Management LLC | 51,300 | $364.2K | 0.00% | +51,300 | New |
| Brevan Howard Capital Management LP | 50,703 | $360.0K | 0.00% | −23,628−31.8% | Reduced |
| DLD Asset Management, LP | 50,000 | $355.0K | 0.04% | +50,000 | New |
| Centiva Capital, LP | 46,815 | $332.4K | 0.02% | +46,815 | New |
| Engineers Gate Manager LP | 46,607 | $330.9K | 0.00% | −82,908−64.0% | Reduced |
| ExodusPoint Capital Management, LP | 46,074 | $327.0K | 0.00% | −46,965−50.5% | Reduced |
| Two Sigma Investments, LP | 43,923 | $311.9K | 0.00% | −81,740−65.0% | Reduced |
| First Citizens Bank & Trust Co | 43,210 | $306.8K | 0.01% | +29,140+207.1% | Added |
| Envestnet Portfolio Solutions, Inc. | 41,667 | $295.8K | 0.00% | +29,140+232.6% | Added |
| Intech Investment Management LLC | 41,388 | $293.9K | 0.00% | +4,250+11.4% | Added |
| Verition Fund Management LLC | 39,318 | $279.2K | 0.00% | −63−0.2% | Reduced |
| XTX Topco Ltd | 38,524 | $273.5K | 0.01% | −81,083−67.8% | Reduced |
| Walleye Capital LLC | 38,094 | $270.5K | 0.00% | +38,094 | New |
| Fox Run Management, L.L.C. | 37,922 | $269.2K | 0.04% | −7,249−16.0% | Reduced |
| Qube Research & Technologies Ltd | 37,584 | $266.8K | 0.00% | +37,584 | New |
| Alliancebernstein L.P. | 37,530 | $266.5K | 0.00% | +9,690+34.8% | Added |
| Axq Capital, LP | 35,439 | $251.6K | 0.08% | +7,694+27.7% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 33,143 | $235.3K | 0.04% | −11,947−26.5% | Reduced |
| Graham Capital Management, L.P. | 31,418 | $223.1K | 0.01% | +31,418 | New |
| JPMorgan Chase & Co | 31,231 | $221.7K | 0.00% | −32,188−50.8% | Reduced |
| Simplex Trading, LLC | 31,219 | $221.0K | 0.01% | −99,452−76.1% | Reduced |
| Quantinno Capital Management LP | 28,826 | $204.7K | 0.00% | +28,826 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 26,281 | $186.6K | 0.00% | −696−2.6% | Reduced |
| FJ Capital Management LLC | 24,677 | $175.2K | 0.02% | +24,677 | New |
| KLCM Advisors, Inc. | 24,000 | $170.4K | 0.02% | 00.0% | Unchanged |
| SEI Investments Co | 23,565 | $167.3K | 0.00% | +4,689+24.8% | Added |
| Citigroup Inc | 23,031 | $163.5K | 0.00% | −25,385−52.4% | Reduced |
| Cresset Asset Management, LLC | 22,193 | $157.6K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 21,642 | $154.0K | 0.00% | −14,554−40.2% | Reduced |
| Gator Capital Management, LLC | 21,435 | $152.2K | 0.05% | 00.0% | Unchanged |
| Creative Planning | 20,421 | $145.0K | 0.00% | +20,421 | New |
| Mraz, Amerine & Associates, Inc. | 18,850 | $133.8K | 0.02% | −700−3.6% | Reduced |
| Quantbot Technologies LP | 18,834 | $133.7K | 0.00% | −81,474−81.2% | Reduced |
| Manufacturers Life Insurance Company, The | 17,993 | $127.8K | 0.00% | +1,615+9.9% | Added |