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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,894,680 | $42.8M | 0.00% | −3,065,833−38.5% | Reduced |
| Vanguard Group Inc | 2,660,882 | $23.3M | 0.00% | −555,166−17.3% | Reduced |
| Dimensional Fund Advisors LP | 2,556,880 | $22.4M | 0.01% | −149,271−5.5% | Reduced |
| FMR LLC | 1,535,671 | $13.4M | 0.00% | −79,359−4.9% | Reduced |
| Susquehanna International Group, LLP | 1,180,557 | $10.3M | 0.02% | +425,592+56.4% | Added |
| Repertoire Partners LP | 1,173,874 | $10.3M | 66.64% | −987,756−45.7% | Reduced |
| Citadel Advisors LLC | 1,102,722 | $9.65M | 0.01% | +723,712+190.9% | Added |
| Geode Capital Management, LLC | 1,094,946 | $9.58M | 0.00% | +48,436+4.6% | Added |
| State Street Corp | 1,032,294 | $9.03M | 0.00% | −761,748−42.5% | Reduced |
| Bain Capital Credit, LP | 1,108,012 | $8.73M | 2.13% | 00.0% | Unchanged |
| Morgan Stanley | 858,040 | $7.51M | 0.00% | +360,085+72.3% | Added |
| American Century Companies Inc | 856,261 | $7.49M | 0.00% | −73,084−7.9% | Reduced |
| Jane Street Group, LLC | 724,094 | $6.34M | 0.01% | +407,918+129.0% | Added |
| Deutsche Bank AG | 723,250 | $6.33M | 0.00% | +48,117+7.1% | Added |
| Western Standard LLC | 699,352 | $6.12M | 3.60% | +245,822+54.2% | Added |
| Wolf Hill Capital Management, LP | 693,444 | $6.07M | 0.55% | −306,559−30.7% | Reduced |
| Goldman Sachs Group Inc | 680,179 | $5.95M | 0.00% | −505,521−42.6% | Reduced |
| Gendell Jeffrey L | 602,286 | $5.27M | 0.23% | +74,748+14.2% | Added |
| Bracebridge Capital, LLC | 579,234 | $5.07M | 3.20% | 00.0% | Unchanged |
| Hotchkis & Wiley Capital Management LLC | 557,680 | $4.88M | 0.02% | −279,970−33.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 522,484 | $4.57M | 0.03% | +522,484 | New |
| Millennium Management LLC | 508,686 | $4.45M | 0.00% | +299,094+142.7% | Added |
| Barclays PLC | 489,746 | $4.29M | 0.00% | +59,885+13.9% | Added |
| Northern Trust Corp | 461,256 | $4.04M | 0.00% | −75,230−14.0% | Reduced |
| Prescott Group Capital Management, L.L.C. | 442,364 | $3.87M | 0.56% | +247,462+127.0% | Added |
| D. E. Shaw & Co., Inc. | 411,470 | $3.60M | 0.00% | −19,665−4.6% | Reduced |
| HRT Financial LP | 401,272 | $3.51M | 0.02% | +293,715+273.1% | Added |
| Charles Schwab Investment Management Inc | 378,764 | $3.31M | 0.00% | −126,362−25.0% | Reduced |
| Third Avenue Management LLC | 366,461 | $3.21M | 0.64% | +136,045+59.0% | Added |
| Caption Management, LLC | 363,082 | $3.18M | 0.15% | +90,605+33.3% | Added |
| Group One Trading, L.P. | 341,468 | $2.99M | 0.12% | +325,352+2,018.8% | Added |
| Bridgeway Capital Management, LLC | 305,127 | $2.67M | 0.07% | +13,494+4.6% | Added |
| Walleye Trading LLC | 297,498 | $2.60M | 0.07% | +245,046+467.2% | Added |
| Nuveen, LLC | 282,657 | $2.47M | 0.00% | +282,657 | New |
| Tudor Investment Corp Et Al | 276,829 | $2.42M | 0.02% | +111,961+67.9% | Added |
| Norges Bank | 263,100 | $2.30M | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 232,383 | $2.03M | 0.00% | +111,535+92.3% | Added |
| HSBC Holdings PLC | 215,435 | $1.88M | 0.00% | −96,847−31.0% | Reduced |
| Marshall Wace, LLP | 205,405 | $1.80M | 0.00% | −61,534−23.1% | Reduced |
| Harbor Advisors LLC | 196,382 | $1.72M | 0.30% | 00.0% | Unchanged |
| Empowered Funds, LLC | 195,127 | $1.71M | 0.02% | +13,494+7.4% | Added |
| Bank of America Corp | 183,638 | $1.61M | 0.00% | −10,423−5.4% | Reduced |
| Invesco Ltd. | 180,495 | $1.58M | 0.00% | −195,018−51.9% | Reduced |
| Renaissance Technologies LLC | 171,500 | $1.50M | 0.00% | +47,300+38.1% | Added |
| Cubist Systematic Strategies, LLC | 170,643 | $1.49M | 0.02% | +126,835+289.5% | Added |
| Trexquant Investment LP | 161,096 | $1.41M | 0.02% | +161,096 | New |
| Y-Intercept (Hong Kong) Ltd | 146,446 | $1.28M | 0.09% | +107,596+277.0% | Added |
| Arrowstreet Capital, Limited Partnership | 145,901 | $1.28M | 0.00% | −21,271−12.7% | Reduced |
| Bank of New York Mellon Corp | 144,073 | $1.26M | 0.00% | −152,146−51.4% | Reduced |
| UBS Group AG | 141,931 | $1.24M | 0.00% | +52,403+58.5% | Added |
| Simplex Trading, LLC | 130,671 | $1.14M | 0.04% | +130,671 | New |
| Engineers Gate Manager LP | 129,515 | $1.13M | 0.02% | +82,682+176.5% | Added |
| Two Sigma Investments, LP | 125,663 | $1.10M | 0.00% | −6,632−5.0% | Reduced |
| XTX Topco Ltd | 119,607 | $1.05M | 0.05% | +91,547+326.3% | Added |
| Balyasny Asset Management LLC | 118,765 | $1.04M | 0.00% | +118,765 | New |
| Occudo Quantitative Strategies LP | 114,575 | $991.1K | 0.13% | +114,575 | New |
| Quantbot Technologies LP | 100,308 | $877.7K | 0.03% | +59,874+148.1% | Added |
| Wolverine Trading, LLC | 101,058 | $874.2K | 0.03% | +72,306+251.5% | Added |
| Ameriprise Financial Inc | 99,552 | $871.1K | 0.00% | −136,097−57.8% | Reduced |
| IMC-Chicago, LLC | 94,803 | $829.5K | 0.03% | +64,487+212.7% | Added |
| ExodusPoint Capital Management, LP | 93,039 | $814.0K | 0.01% | +93,039 | New |
| VELA Investment Management, LLC | 92,412 | $808.6K | 0.28% | +29,828+47.7% | Added |
| Swiss National Bank | 91,900 | $804.1K | 0.00% | −1,400−1.5% | Reduced |
| UBS Asset Management Americas Inc | 89,256 | $781.0K | 0.00% | −104,778−54.0% | Reduced |
| Dark Forest Capital Management LP | 77,234 | $675.8K | 0.03% | +77,234 | New |
| Brevan Howard Capital Management LP | 74,331 | $650.4K | 0.02% | +74,331 | New |
| Nebula Research & Development LLC | 73,102 | $639.6K | 0.06% | +18,925+34.9% | Added |
| Public Sector Pension Investment Board | 72,000 | $630.0K | 0.00% | −118,804−62.3% | Reduced |
| Wells Fargo & Company | 71,321 | $624.1K | 0.00% | −100−0.1% | Reduced |
| Rhumbline Advisers | 69,540 | $608.5K | 0.00% | −71,459−50.7% | Reduced |
| Royce & Associates LP | 66,122 | $578.6K | 0.01% | −6,812−9.3% | Reduced |
| Caxton Associates LLP | 65,647 | $574.4K | 0.02% | +65,647 | New |
| Dynamic Technology Lab Private Ltd | 64,233 | $562.0K | 0.08% | +64,233 | New |
| JPMorgan Chase & Co | 63,419 | $554.9K | 0.00% | −213,343−77.1% | Reduced |
| Algert Global LLC | 62,719 | $548.8K | 0.01% | −25,750−29.1% | Reduced |
| Price T Rowe Associates Inc | 48,873 | $428.0K | 0.00% | +2,038+4.4% | Added |
| Citigroup Inc | 48,416 | $423.6K | 0.00% | −22,202−31.4% | Reduced |
| Fox Run Management, L.L.C. | 45,171 | $395.2K | 0.06% | +18,354+68.4% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 45,090 | $394.5K | 0.10% | +44,961+34,853.5% | Added |
| California State Teachers Retirement System | 44,277 | $387.4K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 43,542 | $381.0K | 0.00% | −79,397−64.6% | Reduced |
| Oxford Asset Management LLP | 42,123 | $368.6K | 0.17% | +23,806+130.0% | Added |
| HAP Trading, LLC | 41,939 | $367.0K | 0.13% | +41,939 | New |
| Verition Fund Management LLC | 39,381 | $344.6K | 0.00% | −34,954−47.0% | Reduced |
| Intech Investment Management LLC | 37,138 | $325.0K | 0.00% | −6,491−14.9% | Reduced |
| Jain Global LLC | 36,672 | $320.9K | 0.01% | +36,672 | New |
| SG Americas Securities, LLC | 36,196 | $317.0K | 0.00% | +36,196 | New |
| Great West Life Assurance Co | 34,226 | $300.0K | 0.00% | −43,429−55.9% | Reduced |
| Point72 Asset Management, L.P. | 33,100 | $289.6K | 0.00% | +25,800+353.4% | Added |
| Two Sigma Advisers, LP | 32,300 | $282.6K | 0.00% | +11,200+53.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 31,199 | $273.0K | 0.00% | −16,107−34.0% | Reduced |
| Alliancebernstein L.P. | 27,840 | $243.6K | 0.00% | −13,400−32.5% | Reduced |
| Axq Capital, LP | 27,745 | $242.8K | 0.10% | +15,633+129.1% | Added |
| Magnetar Financial LLC | 27,188 | $237.9K | 0.00% | +27,188 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 26,977 | $236.0K | 0.00% | +1,170+4.5% | Added |
| Freestone Grove Partners LP | 25,759 | $225.4K | 0.00% | +12,265+90.9% | Added |
| Ensign Peak Advisors, Inc | 24,133 | $211.2K | 0.00% | 00.0% | Unchanged |
| KLCM Advisors, Inc. | 24,000 | $210.0K | 0.02% | +10,000+71.4% | Added |
| MetLife Investment Management | 23,542 | $206.0K | 0.00% | −3,296−12.3% | Reduced |
| Quantessence Capital LLC | 23,500 | $205.6K | 0.05% | +23,500 | New |