John Overdeck’s Penumbra PEN Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$135M Buy
428,128
+369,909
+635% +$120M 0.1% 229
2026
Q1
$19.1M Buy
58,219
+33,359
+134% +$11.3M 0.02% 978
2025
Q4
$7.73M Buy
24,860
+5,980
+32% +$1.65M 0.01% 1314
2025
Q3
$4.78M Sell
18,880
-15,520
-45% -$3.91M 0.01% 1493
2025
Q2
$8.83M Buy
+34,400
New +$9.36M 0.02% 884
2024
Q2
Sell
-3,701
Closed -$826K 3253
2024
Q1
$826K Buy
3,701
+1,601
+76% +$396K ﹤0.01% 2069
2023
Q4
$528K Buy
+2,100
New +$464K ﹤0.01% 2431
2022
Q3
Sell
-120,712
Closed -$15M 2724
2022
Q2
$15M Buy
+120,712
New +$19.2M 0.05% 392
2019
Q3
Sell
-5,798
Closed -$928K 3722
2019
Q2
$928K Buy
+5,798
New +$837K ﹤0.01% 1995
2018
Q4
Sell
-92,203
Closed -$13.8M 3387
2018
Q3
$13.8M Sell
92,203
-17,607
-16% -$2.47M 0.04% 528
2018
Q2
$15.2M Buy
109,810
+33,059
+43% +$4.71M 0.05% 508
2018
Q1
$8.88M Buy
+76,751
New +$7.93M 0.03% 646
2016
Q4
Sell
-52,559
Closed -$3.99M 3426
2016
Q3
$3.99M Buy
52,559
+26,584
+102% +$1.83M 0.01% 1006
2016
Q2
$1.55M Buy
25,975
+12,982
+100% +$700K 0.01% 1435
2016
Q1
$598K Buy
+12,993
New +$607K ﹤0.01% 1941

Other funds holding PEN

John Overdeck's PEN Position: Q2 2026 in Review

John Overdeck increased its Penumbra (PEN) stake by 635% in Q2 2026, buying an estimated $120M and bringing the position to 428,128 shares worth $135M. The position accounts for 0.1% of the portfolio, ranked #229.

John Overdeck first reported a position in PEN in Q1 2016 and has held it in 15 quarters since. 448 funds tracked by Wall St. Rank hold PEN as of Q2 2026.

  • John Overdeck held 428,128 shares of Penumbra worth $135M as of Q2 2026.
  • John Overdeck bought 369,909 Penumbra shares in Q2 2026, an estimated $120M.
  • Penumbra made up 0.1% of John Overdeck's portfolio in Q2 2026, its #229 holding.
  • John Overdeck first reported a position in Penumbra in Q1 2016 and has held it in 15 quarters since.
  • 448 funds tracked by Wall St. Rank held Penumbra as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.