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Jim Simons's Penumbra, Inc. (PEN) position

Yes: as of Q1 2026, Jim Simons holds 2K shares of PEN worth $709K (0.0% of the disclosed portfolio). Last quarter the position was opened. First disclosed Q2 2021.
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Current value
$709K
Shares held
2K
% of portfolio
0.0%
Est. average buy price (i)
$338.61
Quarter-end price
$328.37

Estimated trade prices

Average price in quarters with purchases
$199.41
Average prices in quarters with sales
  • Q4 2024: $227.37 (82K shares sold)
  • Q3 2024: $188.96 (10K shares sold)
  • Q3 2022: $160.46 (22K shares sold)
  • Q3 2021: $268.79 (33K shares sold)

PEN price vs Simons's position

1Y 3Y 5Y MAX
Dates
$100$200$40020222023202420252026Sold 33K shares (81.1%) · Q3 2021. Average closing price $268.79 · Price range $250.72–$291.2433KsharessoldNew position of 31K shares · Q1 2022. Average closing price $222.19 · Price range $187.51–$283.9831KsharespurchasedAdded 126K shares (402.9%) · Q2 2022. Average closing price $158.67 · Price range $116.09–$227.33126KsharespurchasedSold 22K shares (13.6%) · Q3 2022. Average closing price $160.46 · Price range $120.36–$205.8822KsharessoldNew position of 2K shares · Q2 2023. Average closing price $307.06 · Price range $271.54–$344.062KsharespurchasedNew position of 100K shares · Q2 2024. Average closing price $199.64 · Price range $172.27–$223.95100KsharespurchasedSold 10K shares (9.7%) · Q3 2024. Average closing price $188.96 · Price range $163.64–$210.1210KsharessoldSold 82K shares (91.0%) · Q4 2024. Average closing price $227.37 · Price range $190.81–$253.6682KsharessoldNew position of 13K shares · Q2 2025. Average closing price $272.19 · Price range $253.22–$299.7813KsharespurchasedNew position of 2K shares · Q1 2026. Average closing price $338.61 · Price range $300.97–$359.402Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$338.61
Price range · filing quarter
$300.97 – $359.40
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 New +2K +$731K – 2K May 14, 2026
Q2 2025 New +13K +$3.6M – 13K Aug 13, 2025
Q4 2024 Reduced −82K −$19M −91.0% 8K Feb 13, 2025
Q3 2024 Reduced −10K −$1.8M −9.7% 90K Nov 13, 2024
Q2 2024 New +100K +$20M – 100K Aug 9, 2024
Q2 2023 New +2K +$461K – 2K Aug 11, 2023
Q3 2022 Reduced −22K −$3.4M −13.6% 136K Nov 14, 2022
Q2 2022 Added +126K +$20M +402.9% 158K Aug 12, 2022
Q1 2022 New +31K +$7.0M – 31K May 13, 2022
Q3 2021 Reduced −33K −$8.9M −81.1% 8K Nov 12, 2021
Q2 2021 New +41K +$11M – 41K Aug 13, 2021
Data through Q1 2026 · filed May 14, 2026
11 grouped rows from 11 quarters

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Common questions

Does Jim Simons own PEN?

Yes. As of Q1 2026, Jim Simons disclosed 2K shares of PEN, worth $709K. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy PEN?

Jim Simons first disclosed a PEN position in Q2 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell PEN?

The quarter-by-quarter table above shows each sale and reduction Jim Simons disclosed in PEN. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of PEN does Jim Simons own?

Jim Simons disclosed 2K shares of PEN as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for PEN?

Jim Simons's estimated average buy price for PEN is $338.61, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.