Octave Specialty Group
OSG · NYSE
$4.75+$0.13 (+2.81%)TodayMarket closed ·
Prev close $4.62
Who owns OSG
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 36.1% of OSG’s shares.
- BlackRock Institutional Trust Company, N.A.7.8%
- Western Standard, LLC5.0%
- Vanguard Capital Management, LLC4.4%
- LeBlanc (Claude L.)3.7%
- Next 6 largest institutions15.2%
- All other shareholders63.9%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 3.52M | 7.81% |
| Western Standard, LLC | 2.25M | 4.99% |
| Vanguard Capital Management, LLC | 1.97M | 4.38% |
| LeBlanc (Claude L.) | 1.68M | 3.74% |
| Prescott Group Capital Management, LLC | 1.65M | 3.66% |
| Third Avenue Management LLC | 1.34M | 2.98% |
| Bain Capital Private Equity, LP | 1.11M | 2.46% |
| Geode Capital Management, L.L.C. | 1.11M | 2.46% |
| State Street Investment Management (US) | 898.67K | 2.00% |
| Repertoire Partners LP | 721.19K | 1.60% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 1.38M | 3.08% |
| Third Avenue Small-Cap Value Fund | 1.34M | 2.97% |
| iShares Russell 2000 ETF | 1.08M | 2.40% |
| Vanguard Extended Market Index Fund | 525.53K | 1.17% |
| Fidelity Small Cap Index Fund | 446.09K | 0.99% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of OSG in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Smith R Sharon | Option exercise | 52.89K | — |
| Smith R Sharon | Option exercise | 55.43K | — |
| Smith R Sharon | Tax withholding | 2.54K | $11.68K |
| Smith R Sharon | Option exercise | 2.54K | — |
| Trick David | Option exercise | 63.47K | — |
| Trick David | Option exercise | 66.52K | — |
| Trick David | Tax withholding | 3.05K | $14.02K |
| Trick David | Option exercise | 3.05K | — |
| LeBlanc Claude | Option exercise | 221.19K | — |
| LeBlanc Claude | Option exercise | 232.82K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.41M
- Days to cover
- 3.01
- % of shares outstanding
- 3.13%
- Average daily volume
- 467.76K
- Change since last report
- −18.8%
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