Penumbra
PEN · NYSE
$324.34+$1.93 (+0.60%)TodayMarket closed ·
Prev close $322.41
Who owns PEN
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 37.7% of PEN’s shares.
- BlackRock Institutional Trust Company, N.A.9.6%
- HBK Investments, L.P.4.7%
- Vanguard Capital Management, LLC4.3%
- Vanguard Portfolio Management, LLC4.2%
- Next 6 largest institutions14.9%
- All other shareholders62.3%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 3.78M | 9.60% |
| HBK Investments, L.P. | 1.84M | 4.67% |
| Vanguard Capital Management, LLC | 1.71M | 4.35% |
| Vanguard Portfolio Management, LLC | 1.67M | 4.24% |
| State Street Investment Management (US) | 1.24M | 3.16% |
| ExodusPoint Capital Management, LP | 1.09M | 2.77% |
| Balyasny Asset Management LP | 1.09M | 2.77% |
| Arrowstreet Capital, Limited Partnership | 834.90K | 2.12% |
| Geode Capital Management, L.L.C. | 796.47K | 2.03% |
| J.P. Morgan Securities LLC | 790.19K | 2.01% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Mid-Cap ETF | 1.38M | 3.50% |
| Vanguard Total Stock Market Index Fund | 1.19M | 3.02% |
| Vanguard Small-Cap Index Fund | 858.83K | 2.18% |
| BlackRock Event Driven Equity Fund | 769.79K | 1.96% |
| Statens Pensjonsfond Utland | 628.44K | 1.60% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of PEN in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Narayan Shruthi | Tax withholding | 1.37K | $439.08K |
| Narayan Shruthi | Tax withholding | 1.23K | $391.67K |
| Narayan Shruthi | Award | 3.06K | — |
| Elsesser Adam | Gift | 77.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.25M
- Days to cover
- 4.75
- % of shares outstanding
- 5.71%
- Average daily volume
- 472.61K
- Change since last report
- +24.3%
Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.