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Dark Forest Capital Management’s Penumbra PEN Stock Holding History

Dark Forest Capital Management’s Portfolio PEN Stock Details PEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-860
Closed -$218K – 1257
2025
Q3 		$218K Sell
860
-9,112
-91% -$2.3M 0.01% 1074
2025
Q2 		$2.56M Buy
+9,972
New +$2.71M 0.1% 342
2023
Q3 		– Sell
-2,370
Closed -$815K – 1260
2023
Q2 		$815K Buy
2,370
+1,932
+441% +$593K 0.08% 385
2023
Q1 		$122K Buy
+438
New +$112K 0.03% 590
2022
Q1 		– Sell
-21
Closed -$6K – 1640
2021
Q4 		$6K Buy
+21
New +$5.55K ﹤0.01% 1100

Other funds holding PEN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Dark Forest Capital Management's PEN Position: Q4 2025 in Review

Dark Forest Capital Management sold out of Penumbra (PEN) in Q4 2025, closing a stake of 860 shares — an estimated $218K sold.

Dark Forest Capital Management first reported a position in PEN in Q4 2021 and held it in 5 quarters. The position peaked at $2.56M in Q2 2025. 439 funds tracked by Wall St. Rank hold PEN as of Q4 2025.

  • Dark Forest Capital Management reported no remaining Penumbra position as of Q4 2025 after selling out during the quarter.
  • Dark Forest Capital Management sold 860 Penumbra shares in Q4 2025, an estimated $218K.
  • Dark Forest Capital Management first reported a position in Penumbra in Q4 2021 and held it in 5 quarters.
  • Dark Forest Capital Management's Penumbra position peaked at $2.56M in Q2 2025.
  • 439 funds tracked by Wall St. Rank held Penumbra as of Q4 2025.

Based on Dark Forest Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.