Penumbra
421 hedge funds and large institutions have $9.39B invested in Penumbra in 2025 Q1 according to their latest regulatory filings, with 91 funds opening new positions, 144 increasing their positions, 132 reducing their positions, and 39 closing their positions.
502% more call options, than puts
Call options by funds: $95.8M | Put options by funds: $15.9M
133% more first-time investments, than exits
New positions opened: 91 | Existing positions closed: 39
50% more funds holding in top 10
Funds holding in top 10: 4 → 6 (+2)
13% more funds holding
Funds holding: 372 → 421 (+49)
13% more capital invested
Capital invested by funds: $8.3B → $9.39B (+$1.09B)
9% more repeat investments, than reductions
Existing positions increased: 144 | Existing positions reduced: 132
0.16% more ownership
Funds ownership: 90.99% → 91.15% (+0.16%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
+$155M |
| 2 |
Holocene Advisors
New York
|
+$106M |
| 3 |
Lord, Abbett & Co
Jersey City,
New Jersey
|
+$64.5M |
| 4 |
Norges Bank
Oslo,
Norway
|
+$53.7M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
+$44.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
William Blair Investment Management
Chicago,
Illinois
|
-$210M |
| 2 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$169M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
-$37.5M |
| 4 |
PAMP
Polar Asset Management Partners
Toronto,
Ontario, Canada
|
-$22.1M |
| 5 |
ClearBridge Investments
New York
|
-$20.9M |
PEN Hedge Fund Activity: Q1 2025 in Review
421 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Penumbra (PEN) for Q1 2025, worth a combined $9.39B — up 13% from $8.3B a quarter earlier.
Buyers outnumbered sellers: 91 funds opened new PEN positions and 39 closed out — a net gain of 52 holders — while 144 added to existing stakes and 132 trimmed.
The largest buyer was JP Morgan Chase, adding an estimated $155M. The largest seller was William Blair Investment Management, exiting entirely with an estimated $210M sold.
- 421 institutional investors held Penumbra (PEN) as of Q1 2025, up from 372 in Q4 2024.
- Funds reported $9.39B of Penumbra stock for Q1 2025, up 13% quarter-over-quarter.
- 91 funds opened new Penumbra positions in Q1 2025 and 39 closed out, a net change of +52 holders.
- The largest Penumbra buyer in Q1 2025 was JP Morgan Chase, an estimated $155M added.
- The largest Penumbra seller in Q1 2025 was William Blair Investment Management, an estimated $210M sold.
Based on aggregated 13F filings for Q1 2025.