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 2026
Institutional positions in Octave Specialty Group Inc as of Mar 31, 2026. 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
- 148
- +6 vs. Q4 2025
- Shares held
- 32.5M
- +418.0K (+1.3%) vs. Q4 2025
- Total value
- $151.4M
- −$98.5M (−39.4%) vs. Q4 2025
- New holders
- 39
- 32 more added
- Sold out
- 33
- 55 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 17 | $0 | 0.00% | −1,177−98.6% | Reduced |
| SBI Securities Co., Ltd. | 10 | $47 | 0.00% | 00.0% | Unchanged |
| Transamerica Financial Advisors, Inc. | 11 | $51 | 0.00% | +11 | New |
| Advisory Services Network, LLC | 20 | $93 | 0.00% | +20 | New |
| Root Financial Partners, LLC | 22 | $102 | 0.00% | +22 | New |
| Legacy Wealth Managment, LLC | 25 | $117 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 32 | $149 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 34 | $158 | 0.00% | +3+9.7% | Added |
| Allworth Financial LP | 34 | $159 | 0.00% | −257−88.3% | Reduced |
| Fifth Third Bancorp | 39 | $181 | 0.00% | +39 | New |
| GAMMA Investing LLC | 72 | $335 | 0.00% | −359−83.3% | Reduced |
| Basecamp Wealth Advisors LLC | 82 | $381 | 0.00% | +82 | New |
| Bare Financial Services, Inc | 87 | $405 | 0.00% | +87 | New |
| Advisors Asset Management, Inc. | 98 | $456 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 110 | $512 | 0.00% | +110 | New |
| Los Angeles Capital Management LLC | 148 | $688 | 0.00% | 00.0% | Unchanged |
| DiNuzzo Private Wealth, Inc. | 177 | $824 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 237 | $1.10K | 0.00% | +179+308.6% | Added |
| Bell Investment Advisors, Inc | 293 | $1.36K | 0.00% | +293 | New |
| Optiver Holding B.V. | 332 | $1.54K | 0.00% | −38−10.3% | Reduced |
| The PNC Financial Services Group, Inc. | 352 | $1.64K | 0.00% | +239+211.5% | Added |
| Capital Analysts, LLC | 325 | $2.00K | 0.00% | 00.0% | Unchanged |
| Wiser Advisor Group LLC | 500 | $2.33K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 970 | $4.51K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 994 | $4.62K | 0.00% | −1,523−60.5% | Reduced |
| MAI Capital Management | 1,064 | $4.95K | 0.00% | −5−0.5% | Reduced |
| Harbor Capital Advisors, Inc. | 1,219 | $6.00K | 0.00% | +88+7.8% | Added |
| Sterling Capital Management LLC | 1,291 | $6.00K | 0.00% | −1,088−45.7% | Reduced |
| Quadrant Capital Group LLC | 1,572 | $7.31K | 0.00% | −306−16.3% | Reduced |
| Advisor Group Holdings, Inc. | 1,944 | $9.04K | 0.00% | +1,918+7,376.9% | Added |
| California State Teachers Retirement System | 2,233 | $10.4K | 0.00% | −306−12.1% | Reduced |
| CWM, LLC | 3,200 | $14.9K | 0.00% | −2,398−42.8% | Reduced |
| Ameritas Investment Partners, Inc. | 3,648 | $17.0K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 3,852 | $17.7K | 0.00% | +3,730+3,057.4% | Added |
| Legal & General Group Plc | 3,839 | $17.9K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 4,149 | $19.3K | 0.00% | +2,872+224.9% | Added |
| Federated Hermes, Inc. | 4,420 | $20.6K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 6,473 | $30.1K | 0.00% | +6,322+4,186.8% | Added |
| MetLife Investment Management | 7,419 | $34.5K | 0.00% | −12,537−62.8% | Reduced |
| BNP Paribas Arbitrage, SA | 8,300 | $38.6K | 0.00% | −78,434−90.4% | Reduced |
| Simplex Trading, LLC | 9,458 | $44.0K | 0.00% | −1,153−10.9% | Reduced |
| New York State Common Retirement Fund | 10,073 | $46.8K | 0.00% | 00.0% | Unchanged |
| United Capital Financial Advisers, LLC | 10,405 | $48.4K | 0.00% | +10,405 | New |
| Franklin Resources Inc | 10,628 | $49.4K | 0.00% | −1,331−11.1% | Reduced |
| Manufacturers Life Insurance Company, The | 10,832 | $50.4K | 0.00% | −1,762−14.0% | Reduced |
| IMC-Chicago, LLC | 10,897 | $50.7K | 0.00% | −15,406−58.6% | Reduced |
| Symmetry Partners, LLC | 11,007 | $51.2K | 0.00% | +11,007 | New |
| Crown Wealth Group, LLC | 11,162 | $51.9K | 0.02% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 11,825 | $55.0K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 11,948 | $55.6K | 0.00% | +11,948 | New |
| Citigroup Inc | 12,249 | $57.0K | 0.00% | +5,151+72.6% | Added |
| State Board of Administration of Florida Retirement System | 12,630 | $58.7K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 12,864 | $59.8K | 0.00% | −31,262−70.8% | Reduced |
| Graham Capital Management, L.P. | 13,053 | $60.7K | 0.00% | +13,053 | New |
| Aire Advisors, LLC | 13,446 | $62.5K | 0.01% | +13,446 | New |
| Verition Fund Management LLC | 13,500 | $62.8K | 0.00% | −4,000−22.9% | Reduced |
| Mercer Global Advisors Inc | 13,504 | $62.8K | 0.00% | +13,504 | New |
| Metis Global Partners, LLC | 14,334 | $66.7K | 0.00% | −10,802−43.0% | Reduced |
| Daymark Wealth Partners, LLC | 14,596 | $67.9K | 0.00% | +14,596 | New |
| Able Wealth Management LLC | 15,246 | $70.9K | 0.02% | +15,246 | New |
| Axq Capital, LP | 15,436 | $71.8K | 0.01% | −24,938−61.8% | Reduced |
| Centiva Capital, LP | 16,085 | $74.8K | 0.00% | +16,085 | New |
| Anchyra Partners LLC | 16,328 | $75.9K | 0.02% | +16,328 | New |
| Quotient Wealth Partners, LLC | 16,896 | $78.6K | 0.00% | +16,896 | New |
| Brevan Howard Capital Management LP | 18,197 | $84.6K | 0.00% | −2,836−13.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 18,273 | $85.0K | 0.00% | −879−4.6% | Reduced |
| Vanguard Global Advisers, LLC | 18,651 | $86.7K | 0.00% | +18,651 | New |
| SG Americas Securities, LLC | 18,817 | $87.0K | 0.00% | −384,420−95.3% | Reduced |
| Park Capital Management, LLC | 21,262 | $98.9K | 0.10% | +21,262 | New |
| Gator Capital Management, LLC | 21,435 | $99.7K | 0.02% | +21,435 | New |
| Mraz, Amerine & Associates, Inc. | 21,450 | $99.7K | 0.01% | +2,500+13.2% | Added |
| State of Wisconsin Investment Board | 23,144 | $107.6K | 0.00% | +23,144 | New |
| Empirical Asset Management, LLC | 23,440 | $109.0K | 0.03% | +23,440 | New |
| CIBC Asset Management Inc | 23,893 | $111.1K | 0.00% | 00.0% | Unchanged |
| KLCM Advisors, Inc. | 23,900 | $111.1K | 0.01% | 00.0% | Unchanged |
| Raymond James Financial Inc | 25,656 | $119.3K | 0.00% | +25,656 | New |
| State of Wyoming | 28,784 | $133.8K | 0.02% | +9,535+49.5% | Added |
| Commonwealth Financial Services, LLC | 29,008 | $134.9K | 0.02% | +29,008 | New |
| Lazard Asset Management LLC | 29,220 | $135.9K | 0.00% | +29,220 | New |
| Deutsche Bank AG | 30,590 | $142.2K | 0.00% | +4,943+19.3% | Added |
| GWN Securities Inc. | 36,404 | $169.3K | 0.03% | +36,404 | New |
| Quantbot Technologies LP | 38,708 | $180.0K | 0.01% | +19,467+101.2% | Added |
| Acadian Asset Management LLC | 42,930 | $199.0K | 0.00% | +19,877+86.2% | Added |
| Quantinno Capital Management LP | 48,700 | $226.5K | 0.00% | −29,978−38.1% | Reduced |
| AQR Capital Management LLC | 49,828 | $231.7K | 0.00% | −20,300−28.9% | Reduced |
| HRT Financial LP | 50,974 | $237.0K | 0.00% | −60,728−54.4% | Reduced |
| Rhumbline Advisers | 53,547 | $249.0K | 0.00% | −3,924−6.8% | Reduced |
| Wells Fargo & Company | 55,324 | $257.3K | 0.00% | −30,410−35.5% | Reduced |
| Barclays PLC | 56,969 | $264.9K | 0.00% | −623,472−91.6% | Reduced |
| Alliancebernstein L.P. | 37,530 | $292.0K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 67,134 | $312.2K | 0.00% | −21,150−24.0% | Reduced |
| Public Employees Retirement System of Ohio | 68,805 | $319.9K | 0.00% | +68,805 | New |
| Prudential Financial Inc | 70,110 | $326.0K | 0.00% | +15,770+29.0% | Added |
| Jump Financial, LLC | 70,598 | $328.3K | 0.00% | −14,615−17.2% | Reduced |
| Squarepoint Ops LLC | 76,907 | $357.6K | 0.00% | +76,907 | New |
| Engineers Gate Manager LP | 100,416 | $466.9K | 0.01% | +18,831+23.1% | Added |
| Price T Rowe Associates Inc | 101,965 | $475.0K | 0.00% | +31,024+43.7% | Added |
| HSBC Holdings PLC | 102,430 | $476.3K | 0.00% | +10,390+11.3% | Added |
| Cruiser Capital Advisors, LLC | 108,798 | $505.9K | 0.20% | +1,658+1.5% | Added |
| Point72 Asset Management, L.P. | 113,656 | $528.5K | 0.00% | +10,112+9.8% | Added |