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, Q1 2025
Institutional positions in Octave Specialty Group Inc as of Mar 31, 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
- 176
- −2 vs. Q4 2024
- Shares held
- 37.5M
- −3.07M (−7.6%) vs. Q4 2024
- Total value
- $327.5M
- −$183.8M (−35.9%) vs. Q4 2024
- New holders
- 35
- 53 more added
- Sold out
- 37
- 59 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 48,873 | $428.0K | 0.00% | +2,038+4.4% | Added |
| Algert Global LLC | 62,719 | $548.8K | 0.01% | −25,750−29.1% | Reduced |
| JPMorgan Chase & Co | 63,419 | $554.9K | 0.00% | −213,343−77.1% | Reduced |
| Dynamic Technology Lab Private Ltd | 64,233 | $562.0K | 0.08% | +64,233 | New |
| Caxton Associates LLP | 65,647 | $574.4K | 0.02% | +65,647 | New |
| Royce & Associates LP | 66,122 | $578.6K | 0.01% | −6,812−9.3% | Reduced |
| Rhumbline Advisers | 69,540 | $608.5K | 0.00% | −71,459−50.7% | Reduced |
| Wells Fargo & Company | 71,321 | $624.1K | 0.00% | −100−0.1% | Reduced |
| Public Sector Pension Investment Board | 72,000 | $630.0K | 0.00% | −118,804−62.3% | Reduced |
| Nebula Research & Development LLC | 73,102 | $639.6K | 0.06% | +18,925+34.9% | Added |
| Brevan Howard Capital Management LP | 74,331 | $650.4K | 0.02% | +74,331 | New |
| Dark Forest Capital Management LP | 77,234 | $675.8K | 0.03% | +77,234 | New |
| UBS Asset Management Americas Inc | 89,256 | $781.0K | 0.00% | −104,778−54.0% | Reduced |
| Swiss National Bank | 91,900 | $804.1K | 0.00% | −1,400−1.5% | Reduced |
| VELA Investment Management, LLC | 92,412 | $808.6K | 0.28% | +29,828+47.7% | Added |
| ExodusPoint Capital Management, LP | 93,039 | $814.0K | 0.01% | +93,039 | New |
| IMC-Chicago, LLC | 94,803 | $829.5K | 0.03% | +64,487+212.7% | Added |
| Ameriprise Financial Inc | 99,552 | $871.1K | 0.00% | −136,097−57.8% | Reduced |
| Wolverine Trading, LLC | 101,058 | $874.2K | 0.03% | +72,306+251.5% | Added |
| Quantbot Technologies LP | 100,308 | $877.7K | 0.03% | +59,874+148.1% | Added |
| Occudo Quantitative Strategies LP | 114,575 | $991.1K | 0.13% | +114,575 | New |
| Balyasny Asset Management LLC | 118,765 | $1.04M | 0.00% | +118,765 | New |
| XTX Topco Ltd | 119,607 | $1.05M | 0.05% | +91,547+326.3% | Added |
| Two Sigma Investments, LP | 125,663 | $1.10M | 0.00% | −6,632−5.0% | Reduced |
| Engineers Gate Manager LP | 129,515 | $1.13M | 0.02% | +82,682+176.5% | Added |
| Simplex Trading, LLC | 130,671 | $1.14M | 0.04% | +130,671 | New |
| UBS Group AG | 141,931 | $1.24M | 0.00% | +52,403+58.5% | Added |
| Bank of New York Mellon Corp | 144,073 | $1.26M | 0.00% | −152,146−51.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 145,901 | $1.28M | 0.00% | −21,271−12.7% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 146,446 | $1.28M | 0.09% | +107,596+277.0% | Added |
| Trexquant Investment LP | 161,096 | $1.41M | 0.02% | +161,096 | New |
| Cubist Systematic Strategies, LLC | 170,643 | $1.49M | 0.02% | +126,835+289.5% | Added |
| Renaissance Technologies LLC | 171,500 | $1.50M | 0.00% | +47,300+38.1% | Added |
| Invesco Ltd. | 180,495 | $1.58M | 0.00% | −195,018−51.9% | Reduced |
| Bank of America Corp | 183,638 | $1.61M | 0.00% | −10,423−5.4% | Reduced |
| Empowered Funds, LLC | 195,127 | $1.71M | 0.02% | +13,494+7.4% | Added |
| Harbor Advisors LLC | 196,382 | $1.72M | 0.30% | 00.0% | Unchanged |
| Marshall Wace, LLP | 205,405 | $1.80M | 0.00% | −61,534−23.1% | Reduced |
| HSBC Holdings PLC | 215,435 | $1.88M | 0.00% | −96,847−31.0% | Reduced |
| Squarepoint Ops LLC | 232,383 | $2.03M | 0.00% | +111,535+92.3% | Added |
| Norges Bank | 263,100 | $2.30M | 0.00% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 276,829 | $2.42M | 0.02% | +111,961+67.9% | Added |
| Nuveen, LLC | 282,657 | $2.47M | 0.00% | +282,657 | New |
| Walleye Trading LLC | 297,498 | $2.60M | 0.07% | +245,046+467.2% | Added |
| Bridgeway Capital Management, LLC | 305,127 | $2.67M | 0.07% | +13,494+4.6% | Added |
| Group One Trading, L.P. | 341,468 | $2.99M | 0.12% | +325,352+2,018.8% | Added |
| Caption Management, LLC | 363,082 | $3.18M | 0.15% | +90,605+33.3% | Added |
| Third Avenue Management LLC | 366,461 | $3.21M | 0.64% | +136,045+59.0% | Added |
| Charles Schwab Investment Management Inc | 378,764 | $3.31M | 0.00% | −126,362−25.0% | Reduced |
| HRT Financial LP | 401,272 | $3.51M | 0.02% | +293,715+273.1% | Added |
| D. E. Shaw & Co., Inc. | 411,470 | $3.60M | 0.00% | −19,665−4.6% | Reduced |
| Prescott Group Capital Management, L.L.C. | 442,364 | $3.87M | 0.56% | +247,462+127.0% | Added |
| Northern Trust Corp | 461,256 | $4.04M | 0.00% | −75,230−14.0% | Reduced |
| Barclays PLC | 489,746 | $4.29M | 0.00% | +59,885+13.9% | Added |
| Millennium Management LLC | 508,686 | $4.45M | 0.00% | +299,094+142.7% | Added |
| Schonfeld Strategic Advisors LLC | 522,484 | $4.57M | 0.03% | +522,484 | New |
| Hotchkis & Wiley Capital Management LLC | 557,680 | $4.88M | 0.02% | −279,970−33.4% | Reduced |
| Bracebridge Capital, LLC | 579,234 | $5.07M | 3.20% | 00.0% | Unchanged |
| Gendell Jeffrey L | 602,286 | $5.27M | 0.23% | +74,748+14.2% | Added |
| Goldman Sachs Group Inc | 680,179 | $5.95M | 0.00% | −505,521−42.6% | Reduced |
| Wolf Hill Capital Management, LP | 693,444 | $6.07M | 0.55% | −306,559−30.7% | Reduced |
| Western Standard LLC | 699,352 | $6.12M | 3.60% | +245,822+54.2% | Added |
| Deutsche Bank AG | 723,250 | $6.33M | 0.00% | +48,117+7.1% | Added |
| Jane Street Group, LLC | 724,094 | $6.34M | 0.01% | +407,918+129.0% | Added |
| American Century Companies Inc | 856,261 | $7.49M | 0.00% | −73,084−7.9% | Reduced |
| Morgan Stanley | 858,040 | $7.51M | 0.00% | +360,085+72.3% | Added |
| Bain Capital Credit, LP | 1,108,012 | $8.73M | 2.13% | 00.0% | Unchanged |
| State Street Corp | 1,032,294 | $9.03M | 0.00% | −761,748−42.5% | Reduced |
| Geode Capital Management, LLC | 1,094,946 | $9.58M | 0.00% | +48,436+4.6% | Added |
| Citadel Advisors LLC | 1,102,722 | $9.65M | 0.01% | +723,712+190.9% | Added |
| Repertoire Partners LP | 1,173,874 | $10.3M | 66.64% | −987,756−45.7% | Reduced |
| Susquehanna International Group, LLP | 1,180,557 | $10.3M | 0.02% | +425,592+56.4% | Added |
| FMR LLC | 1,535,671 | $13.4M | 0.00% | −79,359−4.9% | Reduced |
| Dimensional Fund Advisors LP | 2,556,880 | $22.4M | 0.01% | −149,271−5.5% | Reduced |
| Vanguard Group Inc | 2,660,882 | $23.3M | 0.00% | −555,166−17.3% | Reduced |
| BlackRock, Inc. | 4,894,680 | $42.8M | 0.00% | −3,065,833−38.5% | Reduced |
| Portolan Capital Management, LLC | 0 | $0 | 0.00% | −589,437−100.0% | Sold out |
| Principal Financial Group Inc | 0 | $0 | 0.00% | −229,954−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −164,474−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −99,425−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −51,489−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −47,670−100.0% | Sold out |
| New York State Teachers Retirement System | 0 | $0 | 0.00% | −44,930−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −36,671−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −35,422−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −35,111−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −28,185−100.0% | Sold out |
| State of Alaska, Department of Revenue | 0 | $0 | 0.00% | −26,912−100.0% | Sold out |
| Illinois Municipal Retirement Fund | 0 | $0 | 0.00% | −24,988−100.0% | Sold out |
| Louisiana State Employees Retirement System | 0 | $0 | 0.00% | −22,900−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −24,217−100.0% | Sold out |
| Creative Planning | 0 | $0 | 0.00% | −21,210−100.0% | Sold out |
| Yousif Capital Management, LLC | 0 | $0 | 0.00% | −18,075−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −17,837−100.0% | Sold out |
| Comerica Bank | 0 | $0 | 0.00% | −16,296−100.0% | Sold out |
| Maryland State Retirement & Pension System | 0 | $0 | 0.00% | −15,927−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −13,756−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −12,357−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −11,539−100.0% | Sold out |
| Oregon Public Employees Retirement Fund | 0 | $0 | 0.00% | −11,198−100.0% | Sold out |