Who owns PEN?
Institutional ownership of Penumbra Inc. from Form 13F, Q2 2026
451 institutional managers reported holding Penumbra Inc. (PEN) in Form 13F filings for Q2 2026, with 34,136,586 shares worth $10.8B. The largest reported holder was BlackRock, Inc. Managers that filed both quarters added a net 358,233 shares (+1.1%). 38 opened new positions and 68 sold out.
- Funds holding
- 451
- Value held
- $10.8B
- New / sold out
- 38 / 68
- Net shares, same filers
- +1.1%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of PEN
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| BlackRock, Inc. | $1.4B | 12.6% | 4,297,555 | Trimmed |
| HBK Investments L P | $581M | 5.4% | 1,838,508 | Added |
| Vanguard Capital Management LLC | $540M | 5.0% | 1,709,877 | Added |
| Vanguard Portfolio Management LLC | $526M | 4.9% | 1,667,276 | Added |
| State Street Corp | $393M | 3.6% | 1,243,258 | Added |
| ExodusPoint Capital Management, LP | $344M | 3.2% | 1,090,430 | Added |
| Balyasny Asset Management L.P. | $344M | 3.2% | 1,090,163 | Added |
| JPMorgan Chase & Co | $339M | 3.1% | 1,071,454 | Added |
| Goldman Sachs Group Inc | $267M | 2.5% | 847,104 | Added |
| Arrowstreet Capital, Limited Partnership | $264M | 2.4% | 834,903 | Added |
| Geode Capital Management, LLC | $252M | 2.3% | 796,471 | Added |
| Norges Bank | $238M | 2.2% | 752,242 | New |
| UBS Group AG | $222M | 2.1% | 703,822 | Added |
| Millennium Management LLC | $221M | 2.1% | 700,611 | Trimmed |
| Morgan Stanley | $187M | 1.7% | 591,824 | Added |
| AQR Arbitrage LLC | $178M | 1.7% | 563,873 | Added |
| Whitebox Advisors LLC | $160M | 1.5% | 506,881 | Added |
| Capital World Investors | $151M | 1.4% | 479,701 | Added |
| Citadel Advisors LLC | $142M | 1.3% | 448,763 | Added |
| Neuberger Berman Group LLC | $138M | 1.3% | 438,553 | Added |
| Citigroup Inc | $137M | 1.3% | 433,125 | Trimmed |
| Two Sigma Investments, LP | $135M | 1.3% | 428,128 | Added |
| Tudor Investment Corp Et Al | $127M | 1.2% | 400,649 | Trimmed |
| Charles Schwab Investment Management Inc | $109M | 1.0% | 343,713 | Added |
| Northern Trust Corp | $105M | 1.0% | 333,064 | Added |
Share of 13F holdings is each fund's shares as a share of the 34,136,586 PEN shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Norges Bank New+$238M
- JPMorgan Chase & Co Added+$211M
- ExodusPoint Capital Management, LP Added+$197M
- Arrowstreet Capital, Limited Partnership Added+$137M
- Two Sigma Investments, LP Added+$117M
- Balyasny Asset Management L.P. Added+$104M
- Citadel Advisors LLC Added+$77.7M
- HBK Investments L P Added+$64.5M
- Morgan Stanley Added+$60.1M
- TIG Advisors, LLC Added+$48.9M
Biggest sellers in Q2 2026
- Baillie Gifford & Co Sold out-$276M
- Millennium Management LLC Trimmed-$126M
- Congress Asset Management Co Trimmed-$96.3M
- FMR LLC Trimmed-$90.0M
- Invesco Ltd. Trimmed-$86.6M
- Champlain Investment Partners, LLC Trimmed-$86.0M
- Amundi Trimmed-$74.5M
- Soros Fund Management LLC Sold out-$66.8M
- Bank of Nova Scotia Trimmed-$66.5M
- Citigroup Inc Trimmed-$59.3M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $1.9B and sold $1.8B; 143 added and 180 trimmed.
Schedule 13D and 13G filings on PEN
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-08-13BARCLAYS PLC SCHEDULE 13G filed by Penumbra Inc.Schedule 13G
Questions about PEN ownership
- Who owns PEN stock?
- 451 institutional investment managers reported PEN positions in their Form 13F filings for Q2 2026, holding 34,136,586 shares worth $10.8B in total. BlackRock, Inc. reported the largest position.
- Are funds buying or selling PEN?
- In Q2 2026, 38 managers opened new PEN positions, 143 added, 180 trimmed and 68 sold out. Managers that filed in both quarters added a net 358,233 shares.
- How current is this PEN institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to PEN by CUSIP. Options are left out. PEN news and filings · PEN insider trades · Top funds