Octave Specialty GroupOSG
13F holders, Q2 2026 (June 30)147holders −1
35new positions
35sold out
6famous investors
$6.24avg. 13F price*
At the end of Q2 2026, 147 institutions reported holding Octave Specialty Group Inc. (OSG) in their 13F filings, down 1 from Q1 2026. 35 opened new positions and 35 sold out. The largest holders were BlackRock, Inc. ($28.5M), Western Standard LLC ($14.0M) and Vanguard Capital Management LLC ($12.3M). 6 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Octave Specialty Group Inc.
- CUSIP
- 023139884
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 35 | $10.0M |
| Exits | 35 | $4.3M |
All 13F filers, Q1 2026 → Q2 2026: 4,657,103 shares bought and 6,799,446 shares sold, net −2,142,343 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 147 holders
| BlackRock, Inc. | 0.00% | Add +16.7% | 4,572,516 | $28.5M |
| Western Standard LLC | 4.75% | No change | 2,247,591 | $14.0M |
| Vanguard Capital Management LLC | 0.00% | Add +1.4% | 1,972,619 | $12.3M |
| Prescott Group Capital Management, L.L.C. | 0.89% | Add +3.5% | 1,647,793 | $10.3M |
| Third Avenue Management LLC | 1.34% | Add +0.1% | 1,341,879 | $8.4M |
| Bain Capital Credit, LP | 1.88% | No change | 1,108,012 | $6.9M |
| Geode Capital Management, LLC | 0.00% | Add +8.2% | 1,106,335 | $6.9M |
| State Street Corp. | 0.00% | Reduce -4.5% | 898,673 | $5.6M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -45.3% | 716,947 | $4.5M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -26.6% | 649,530 | $4.1M |
| Marshall Wace, LLP | 0.00% | Reduce -43.5% | 601,796 | $3.8M |
| Zacks Investment Management | 0.03% | New | 590,370 | $3.7M |
| Bracebridge Capital, LLC | 0.79% | No change | 579,234 | $3.6M |
| Morgan Stanley | 0.00% | Add +142.1% | 569,563 | $3.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +61.9% | 560,756 | $3.5M |
| RIHO Partners, LLC | 1.95% | Add +1.5% | 554,818 | $3.5M |
| Essex Investment Management Co. LLC | 0.44% | Add +28.9% | 539,289 | $3.4M |
| Gendell Jeffrey L | 0.03% | Reduce -65.0% | 494,092 | $3.1M |
| Wolf Hill Capital Management, LP | 0.29% | Reduce -67.3% | 480,187 | $3.0M |
| Nuveen, LLC | 0.00% | Reduce -46.5% | 428,165 | $2.7M |
| Citadel Advisors | 0.00% | Reduce -2.1% | 422,777 | $2.6M |
| Caption Management, LLC | 0.10% | Reduce -34.8% | 419,136 | $2.6M |
| Vanguard Portfolio Management LLC | 0.00% | Add +32.6% | 392,350 | $2.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +27.9% | 377,869 | $2.4M |
| Northern Trust Corp. | 0.00% | Add +9.4% | 352,680 | $2.2M |
| IPG Investment Advisors LLC | 0.27% | Reduce -6.7% | 303,930 | $1.9M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +109.9% | 302,913 | $1.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +7.8% | 295,841 | $1.8M |
| AYAL Capital Advisors Ltd | 0.89% | New | 280,000 | $1.7M |
| Jane Street Group, LLC | 0.00% | Reduce -63.5% | 278,731 | $1.7M |
| Raymond James Financial Inc. | 0.00% | Add +834.2% | 239,680 | $1.5M |
| AQR Capital Management | 0.00% | Add +361.4% | 229,890 | $1.4M |
| Prudential Financial Inc. | 0.00% | Add +222.4% | 226,010 | $1.4M |
| Tudor Investment Corporation | 0.01% | Add +35.3% | 216,362 | $1.4M |
| Harbor Advisors LLC | 0.15% | No change | 196,382 | $1.2M |
| Russell Investments Group, Ltd. | 0.00% | Add +7.6% | 195,046 | $1.2M |
| Quantinno Capital Management LP | 0.00% | Add +290.7% | 190,283 | $1.2M |
| Legato Capital Management LLC | 0.09% | Add +38.5% | 181,037 | $1.1M |
| UBS Group AG | 0.00% | Reduce -44.3% | 147,197 | $919K |
| Gsa Capital Partners LLP | 0.06% | New | 143,566 | $896K |
| Susquehanna International Group, LLP | 0.00% | Reduce -65.0% | 136,692 | $853K |
| Bank of New York Mellon Corp | 0.00% | Add +3.5% | 134,966 | $842K |
| Bank of America Corp. | 0.00% | Reduce -48.7% | 131,360 | $820K |
| Invesco Ltd. | 0.00% | Reduce -15.3% | 127,868 | $798K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -32.9% | 122,504 | $764K |
| Diametric Capital, LP | 0.08% | New | 118,364 | $739K |
| Renaissance Technologies | 0.00% | Reduce -48.5% | 117,200 | $731K |
| Wells Fargo & Company | 0.00% | Add +111.0% | 116,707 | $728K |
| T. Rowe Price Associates Inc. | 0.00% | Add +14.4% | 116,612 | $728K |
| HSBC Holdings PLC | 0.00% | Add +11.8% | 114,498 | $724K |
| Sei Investments Co. | 0.00% | Reduce -29.9% | 109,389 | $683K |
| Lone Peak Global Investors LLC | 0.09% | New | 107,676 | $672K |
| American Century Companies Inc. | 0.00% | Reduce -24.5% | 91,000 | $568K |
| Man Group plc | 0.00% | New | 66,579 | $415K |
| Vanguard Global Advisers, LLC | 0.00% | Add +238.4% | 63,120 | $394K |
| Public Employees Retirement System of Ohio | 0.00% | Reduce -10.9% | 61,305 | $383K |
| GWN Securities Inc. | 0.06% | Add +65.6% | 60,295 | $376K |
| Ameriprise Financial Inc. | 0.00% | Reduce -49.1% | 58,504 | $365K |
| FJ Capital Management LLC | 0.05% | New | 57,937 | $362K |
| State of Wyoming | 0.04% | Add +93.6% | 55,733 | $348K |
| Empowered Funds, LLC | 0.00% | Reduce -52.6% | 54,004 | $337K |
| Rhumbline Advisers | 0.00% | Reduce -0.1% | 53,481 | $334K |
| Barclays PLC | 0.00% | Reduce -12.9% | 49,637 | $310K |
| Los Angeles Capital Management LLC | 0.00% | Add +32253.4% | 47,883 | $299K |
| Lazard Asset Management LLC | 0.00% | Add +48.3% | 43,331 | $270K |
| Deutsche Bank AG | 0.00% | Add +31.9% | 40,359 | $252K |
| Alliancebernstein L.P. | 0.00% | Add +13.6% | 42,630 | $198K |
| Mariner, LLC | 0.00% | New | 30,584 | $191K |
| State of Wisconsin Investment Board | 0.00% | Add +29.8% | 30,044 | $187K |
| Mercer Global Advisors Inc. | 0.00% | Add +116.9% | 29,288 | $183K |
| Cerity Partners LLC | 0.00% | New | 26,828 | $167K |
| Engineers Gate Manager LP | 0.00% | Reduce -74.6% | 25,500 | $159K |
| MetLife Investment Management, LLC | 0.00% | Add +230.3% | 24,501 | $153K |
| Envestnet Asset Management Inc. | 0.00% | New | 24,244 | $151K |
| KLCM Advisors, Inc. | 0.01% | No change | 23,900 | $149K |
| Group One Trading LLC | 0.00% | Add +89.0% | 22,576 | $141K |
| BNP Paribas Financial Markets | 0.00% | Add +159.7% | 21,554 | $134K |
| Mraz, Amerine & Associates, Inc. | 0.02% | No change | 21,450 | $134K |
| Gator Capital Management, LLC | 0.03% | Reduce -2.3% | 20,935 | $131K |
| Millennium Management | 0.00% | Reduce -85.5% | 19,610 | $122K |
| Impact Capital Partners LLC | 0.03% | New | 19,516 | $122K |
| Citigroup Inc. | 0.00% | Add +55.8% | 19,080 | $119K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.2% | 19,044 | $119K |
| Inscription Capital, LLC | 0.01% | New | 19,037 | $119K |
| JPMorgan Chase & Co. | 0.00% | Reduce -93.0% | 18,668 | $119K |
| XTX Topco Ltd | 0.00% | Reduce -84.0% | 18,657 | $116K |
| Metis Global Partners, LLC | 0.00% | No change | 14,334 | $89K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 14,061 | $85K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 12,630 | $79K |
| Atria Investments, Inc | 0.00% | New | 12,473 | $78K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +14.6% | 12,414 | $77K |
| Corient Private Wealth LP | 0.00% | New | 12,270 | $77K |
| D. E. Shaw & Co. | 0.00% | Reduce -5.1% | 12,207 | $76K |
| Ieq Capital, LLC | 0.00% | New | 12,203 | $76K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 11,825 | $74K |
| Jump Financial, LLC | 0.00% | Reduce -83.5% | 11,644 | $73K |
| SG Americas Securities, LLC | 0.00% | Reduce -40.5% | 11,203 | $70K |
| Crown Wealth Group, LLC | 0.02% | No change | 11,162 | $70K |
| McGlone Suttner Wealth Management, Inc. | 0.01% | New | 10,911 | $68K |
| Axq Capital, LP | 0.01% | Reduce -31.0% | 10,652 | $66K |
"% of holder's portfolio" is OSG's weight in each manager's 13F, not the share of Octave Specialty Group Inc. the manager owns.