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Penumbra
438 hedge funds and large institutions have $11.4B invested in Penumbra in 2025 Q4 according to their latest regulatory filings, with 79 funds opening new positions, 125 increasing their positions, 177 reducing their positions, and 53 closing their positions.
New
Increased
Maintained
Reduced
Closed
263% more call options, than puts
Call options by funds: $53M | Put options by funds: $14.6M
50% more funds holding in top 10
Funds holding in top 10: 4 → 6 (+2)
49% more first-time investments, than exits
New positions opened: 79 | Existing positions closed: 53
24% more capital invested
Capital invested by funds: $9.19B → $11.4B (+$2.25B)
4% more funds holding
Funds holding: 420 → 438 (+18)
0.91% more ownership
Funds ownership: 93.04% → 93.95% (+0.91%)
29% less repeat investments, than reductions
Existing positions increased: 125 | Existing positions reduced: 177
Holders
438
Holders Change
+18
Holders Change %
+4.29%
% of All Funds
5.33%
Holding in Top 10
6
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+50%
% of All Funds
0.07%
New
79
Increased
125
Reduced
177
Closed
53
Calls
$53M
Puts
$14.6M
Net Calls
+$38.4M
Net Calls Change
-$19.3M
Top Buyers
| 1 |
Millennium Management
New York
|
+$123M |
| 2 |
Artisan Partners
Milwaukee,
Wisconsin
|
+$102M |
| 3 |
William Blair Investment Management
Chicago,
Illinois
|
+$95.6M |
| 4 |
SC
Samlyn Capital
New York
|
+$58.8M |
| 5 |
WP
Woodline Partners
San Francisco,
California
|
+$56.1M |
