OSG: Octave Specialty Group Inc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-07-31 | New 13G stake | Vanguard Capital Management | 5.04% | SEC |
Institutional ownership (Q2 2026)
147 institutions reported holding $185.86M of Octave Specialty Group Inc on Form 13F (148 the quarter before). 35 opened a new position and 35 sold out. Shares held by institutions: -8%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 4,572,516 | $28.53M |
| Western Standard LLC | 2,247,591 | $14.02M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,972,619 | $12.31M |
| Prescott Group Capital Management, L.L.C. | 1,647,793 | $10.28M |
| THIRD AVENUE MANAGEMENT LLC | 1,341,879 | $8.37M |
| Bain Capital Credit, LP | 1,108,012 | $6.91M |
| GEODE CAPITAL MANAGEMENT, LLC | 1,106,335 | $6.91M |
| STATE STREET CORP | 898,673 | $5.61M |
| DIMENSIONAL FUND ADVISORS LP | 716,947 | $4.47M |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 649,530 | $4.05M |
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