Oshkosh
OSK · NYSE
Who owns OSK
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 47.4% of OSK’s shares.
- BlackRock Institutional Trust Company, N.A.8.7%
- Vanguard Portfolio Management, LLC7.0%
- AQR Capital Management, LLC5.5%
- Dimensional Fund Advisors, L.P.5.2%
- Next 6 largest institutions20.9%
- All other shareholders52.6%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 5.40M | 8.74% |
| Vanguard Portfolio Management, LLC | 4.35M | 7.05% |
| AQR Capital Management, LLC | 3.38M | 5.47% |
| Dimensional Fund Advisors, L.P. | 3.21M | 5.19% |
| Vanguard Capital Management, LLC | 2.82M | 4.56% |
| Greenhaven Associates, Inc. | 2.56M | 4.14% |
| LSV Asset Management | 2.13M | 3.45% |
| State Street Investment Management (US) | 2.08M | 3.38% |
| Capital Research Global Investors | 1.74M | 2.81% |
| Sanders Capital, LLC | 1.60M | 2.59% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Mid-Cap ETF | 2.18M | 3.54% |
| Vanguard Total Stock Market Index Fund | 1.99M | 3.22% |
| American Funds SMALLCAP World Fund | 1.98M | 3.20% |
| Vanguard Windsor II Fund | 1.60M | 2.59% |
| Vanguard Small-Cap Index Fund | 1.43M | 2.32% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $184.30K (2 trades) of OSK on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Pfeifer John C | Sale | 778 | $116.70K |
| Nordlund Steven Craig | Award | 7.00K | — |
| Nordlund Steven Craig | Option exercise | 4.21K | — |
| Nordlund Steven Craig | Tax withholding | 1.82K | $265.41K |
| Nordlund Steven Craig | Option exercise | 4.21K | $614.19K |
| Palmer Duncan | Sale | 505 | $67.60K |
| Perkins David G | Award | 1.11K | — |
| DAVIS DOUGLAS LEE | Award | 1.11K | — |
| Jordan Tyrone Michael | Award | 1.11K | — |
| Burns Bill | Award | 1.11K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Lisa McClainHouse | Sale | $1K–$15K | Oct 31, 2025 |
| Lisa McClainHouse | Purchase | $1K–$15K | Oct 30, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.06M
- Days to cover
- 2.55
- % of shares outstanding
- 3.33%
- Average daily volume
- 808.82K
- Change since last report
- +3.3%
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