Penumbra Inc (PEN)
Healthcare
Medical Devices
321.20 $
+0.4%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Penumbra Inc (PEN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.2% of the shares are freely tradable; institutional investors hold 87.9%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
87.9%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
2.9%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
97.2%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
5.8%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
39Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.01 | 4,330,456 | +4.6 | 03/31/2026 |
| Vanguard Group Inc | 9.59 | 3,770,569 | -1.7 | 12/31/2025 |
| Vanguard Capital Management, LLC | 4.31 | 1,694,488 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.21 | 1,654,477 | +0.0 | 03/31/2026 |
| HBK INVESTMENTS L P | 4.16 | 1,634,261 | +0.0 | 03/31/2026 |
| State Street Corp | 3.01 | 1,185,811 | +2.5 | 03/31/2026 |
| Millennium Management LLC | 2.79 | 1,098,136 | +62.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.38 | 1,330,877 | +0.0 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 3.02 | 1,187,238 | +0.2 | 04/30/2026 |
| Vanguard Small Cap Index | 2.18 | 858,901 | -0.2 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.