Penumbra, Inc.
DE ˙ DB ˙ US70975L1070
275,60 € ↑0,40 (0,15%)
2026-06-04
DEL PRIS
SecurityDE:0P8 / Penumbra, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership36,280 shares
Latest Disclosed Value $ 11,913,264
Marshall Wace, Llp reports 65.56% decrease in ownership of 0P8 / Penumbra, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 36,280 shares of Penumbra, Inc. (DE:0P8) valued at $10,256,356 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 105,331 shares of Penumbra, Inc.. This represents a change in shares of -65.56% during the quarter. The current value of the position is $9,998,768 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F PENUMBRA COMMON STOCK 70975L107 36,280 -69,051 -65.56 11,913 -63.62 0.0119
2026-02-13 2025-12-31 13F PENUMBRA COMMON STOCK 70975L107 105,331 93,666 802.97 32,748 1,008.60 0.0298
2025-11-13 2025-09-30 13F PENUMBRA COMMON STOCK 70975L107 11,665 -70,366 -85.78 2,955 -85.97 0.0030
2025-08-13 2025-06-30 13F PENUMBRA COMMON STOCK 70975L107 82,031 63,389 340.03 21,052 322.29 0.0237
2025-05-15 2025-03-31 13F PENUMBRA COMMON STOCK 70975L107 18,642 -25,310 -57.59 4,985 -52.24 0.0063
2025-02-13 2024-12-31 13F PENUMBRA COMMON STOCK 70975L107 43,952 42,130 2,312.29 10,438 2,848.31 0.0125
2024-11-14 2024-09-30 13F PENUMBRA COMMON STOCK 70975L107 1,822 -105,870 -98.31 354 -98.17 0.0004
2024-08-14 2024-06-30 13F PENUMBRA COMMON STOCK 70975L107 107,692 87,257 427.00 19,381 325.02 0.0259
2024-05-15 2024-03-31 13F PENUMBRA COMMON STOCK 70975L107 20,435 -30,246 -59.68 4,561 -64.23 0.0069
2024-02-14 2023-12-31 13F PENUMBRA COMMON STOCK 70975L107 50,681 5,912 13.21 12,748 17.71 0.0216
2023-11-14 2023-09-30 13F PENUMBRA COMMON STOCK 70975L107 44,769 -28,845 -39.18 10,830 -57.24 0.0219
2023-08-14 2023-06-30 13F PENUMBRA COMMON STOCK 70975L107 73,614 73,614 25,328 0.0495
2023-02-14 2022-12-31 13F PENUMBRA COMMON STOCK 70975L107 0 -13,180 -100.00 0 -100.00
2022-11-14 2022-09-30 13F PENUMBRA COMMON STOCK 70975L107 13,180 13,180 2,499 0.0055
2021-11-15 2021-09-30 13F PENUMBRA COMMON STOCK 70975L107 0 -810 -100.00 0 -100.00
2021-08-13 2021-06-30 13F PENUMBRA COMMON STOCK 70975L107 810 -78,387 -98.98 222 -98.96 0.0011
2021-05-17 2021-03-31 13F PENUMBRA COMMON STOCK 70975L107 79,197 62,795 382.85 21,428 646.62 0.0982
2021-02-16 2020-12-31 13F PENUMBRA COMMON STOCK 70975L107 16,402 13,578 480.81 2,870 422.77 0.0156
2020-11-16 2020-09-30 13F PENUMBRA COMMON STOCK 70975L107 2,824 2,824 -82.78 549 -80.87 0.0035
2019-08-14 2019-06-30 13F PENUMBRA COMMON STOCK 70975L107 0 -3,923 -100.00 0 -100.00
2019-05-29 2019-03-31 13F/A-1 PENUMBRA COMMON STOCK 70975L107 3,923 3,923 576 0.0054
2019-05-14 2019-03-31 13F PENUMBRA COMMON STOCK 70975L107 3,923 3,923 576
2019-02-14 2018-12-31 13F PENUMBRA COMMON STOCK 70975L107 0 -57,651 -100.00 0 -100.00
2018-12-06 2018-09-30 13F/A-1 PENUMBRA COMMON STOCK 70975L107 57,651 57,651 8,630 0.0734
2018-11-14 2018-09-30 13F PENUMBRA COMMON STOCK 70975L107 57,651 57,651 8,630
2017-05-12 2017-03-31 13F PENUMBRA COMMON STOCK 70975L107 0 -3,302 -100.00 0 -100.00
2017-02-10 2016-12-31 13F PENUMBRA COMMON STOCK 70975L107 3,302 3,302 211 0.0014
2016-11-10 2016-09-30 13F PENUMBRA COMMON STOCK 70975L107 0 -9,260 -100.00 0 -100.00
2016-08-12 2016-06-30 13F PENUMBRA COMMON STOCK 70975L107 9,260 -73,631 -88.83 551 -85.55 0.0046
2016-05-13 2016-03-31 13F PENUMBRA COMMON STOCK 70975L107 82,891 82,891 3,813 0.0367
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.