PENUMBRA INC (PEN) Institutional Ownership Changes & 13F Activity
PENUMBRA INC (PEN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Exoduspoint Capital Management, Lp, Whitebox Advisors Llc, Millennium Management Llc, Two Sigma Investments, Lp, and Balyasny Asset Management L.P..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Envestnet Asset Management Inc | Sell | -16,637 | -86.2% | 2,659 | $839.58K | Q2 2026 | Sep 23, 2026 |
| Qrg Capital Management, Inc. | Buy | +28 | +1.5% | 1,849 | $583.82K | Q2 2026 | Sep 23, 2026 |
| State Street Corp | Buy | +57,447 | +4.8% | 1,243,258 | $392.56M | Q2 2026 | Sep 22, 2026 |
| Hbk Investments L P | Buy | +204,247 | +12.5% | 1,838,508 | $580.51M | Q2 2026 | Sep 16, 2026 |
| Manufacturers Life Insurance Company, The | Sell | -20 | -0.1% | 20,027 | $6.32M | Q2 2026 | Sep 09, 2026 |
| Parkside Financial Bank & Trust | Buy | +14 | +12.8% | 123 | $38.84K | Q2 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Buy | +246,038 | +121.4% | 448,763 | $141.70M | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +253 | +16.8% | 1,757 | $554.89K | Q2 2026 | Aug 27, 2026 |
| Optimize Financial Inc | Sell | -4 | -0.3% | 1,304 | $411.74K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +299 | +0.7% | 43,286 | $13.67M | Q2 2026 | Aug 24, 2026 |
| Harvest Fund Management Co., Ltd | Sell | -393 | -73.7% | 140 | $44.00K | Q2 2026 | Aug 20, 2026 |
| Mercer Global Advisors Inc | Buy | +6,353 | +197.2% | 9,575 | $3.02M | Q2 2026 | Aug 19, 2026 |
| Mint Tower Capital Management B.V. | Sell | -20,481 | -80.3% | 5,019 | $1.58M | Q2 2026 | Aug 18, 2026 |
| Beacon Pointe Advisors, Llc | Sell | -4,191 | -79.2% | 1,102 | $347.96K | Q2 2026 | Aug 18, 2026 |
| Glazer Capital, Llc | Buy | +63,308 | +66.8% | 158,127 | $49.93M | Q2 2026 | Aug 17, 2026 |
| Public Employees Retirement System Of Ohio | Sell | -167 | -1.5% | 10,939 | $3.45M | Q2 2026 | Aug 17, 2026 |
| Equitable Holdings, Inc. | Sell | -106 | -9.5% | 1,008 | $318.28K | Q2 2026 | Aug 17, 2026 |
| Transamerica Financial Advisors, Llc | Buy | +6 | +75.0% | 14 | $4.42K | Q2 2026 | Aug 17, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +625,215 | +134.4% | 1,090,430 | $344.30M | Q2 2026 | Aug 14, 2026 |
| Whitebox Advisors Llc | Buy | +506,881 | — | 506,881 | $160.05M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -397,525 | -36.2% | 700,611 | $221.22M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +369,909 | +635.4% | 428,128 | $135.18M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +328,067 | +43.0% | 1,090,163 | $344.22M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +263,980 | — | 263,980 | $83.35M | Q2 2026 | Aug 14, 2026 |
| Thrivent Financial For Lutherans | Sell | -179,395 | -95.4% | 8,734 | $2.76M | Q2 2026 | Aug 14, 2026 |
| Tig Advisors, Llc | Buy | +155,000 | +258.0% | 215,082 | $67.91M | Q2 2026 | Aug 14, 2026 |
| Hudson Bay Capital Management Lp | Sell | -145,900 | -41.8% | 203,138 | $64.14M | Q2 2026 | Aug 14, 2026 |
| Aqr Arbitrage Llc | Buy | +140,800 | +33.3% | 563,873 | $178.04M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +126,529 | +17.6% | 847,104 | $267.47M | Q2 2026 | Aug 14, 2026 |
| Melqart Asset Management (Uk) Ltd | Buy | +103,912 | +127.0% | 185,734 | $58.65M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about PEN activity
Which institutional owners are buying PEN?
Institutional owners buying PEN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in PEN activity?
"Buy" means an investor increased their reported position in PEN compared to the prior reporting period. This reflects growing exposure to PENUMBRA INC (PEN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in PEN increasing?
Institutional interest in PEN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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