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PEN in the 13F filings

Penumbra Inc · CUSIP 70975L107

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 23 Jan 2026
Managers listing it
29
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 10 listed it in both
Shares listed
13,360,301
combined, among listed positions
Reported value
$4.2bn
combined, at the quarter end

Among the 92 comparable managers: 18 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +619,132.

Managers listing PEN in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

29 of 29 holders

ActionFiling
Fidelity (FMR LLC)5,131,942$1.6bn0.08%Trimmed-759,72317 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,644,094$511m0.06%Trimmed-150,17317 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC990,275$308munder 0.1%Added+19,27717 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co876,325$272m0.23%Trimmed-32,22123 Jan 2026 (the filing on sec.gov)
Millennium Management LLC677,832$211m0.09%Added+444,52617 Feb 2026 (the filing on sec.gov)
Invesco Ltd638,305$198munder 0.1%Added+7,21119 Feb 2026 (the filing on sec.gov)
Artisan Partners LP594,112$185m0.28%Added+370,63617 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd475,898$148m0.07%Added+7,05017 Feb 2026 (the filing on sec.gov)
Holocene Advisors LP471,348$147m0.31%Added+161,12917 Feb 2026 (the filing on sec.gov)
Capital World Investors426,456$133munder 0.1%Added+10,72411 Feb 2026 (the filing on sec.gov)
Woodline Partners LP202,982$63m0.24%Newnew17 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC184,941$58munder 0.1%Trimmed-49,51417 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP173,846$54munder 0.1%Added+51,43713 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC161,911$50m0.06%Trimmed-9,71217 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP158,301$49munder 0.1%Added+6,96017 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP113,582$35munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP105,331$33munder 0.1%Added+93,66613 Feb 2026 (the filing on sec.gov)
Freestone Grove Partners LP96,889$30m0.22%Newnew17 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP80,832$25munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Man Group PLC77,358$24munder 0.1%Trimmed-40,01317 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP24,860$7.7munder 0.1%Added+5,98017 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP21,750$6.8m0.05%Newnew17 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC11,300$3.5munder 0.1%Trimmed-11213 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.7,524$2.3munder 0.1%Trimmed-6217 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC5,043$1.6munder 0.1%Added+4427 Oct 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
10 in Q3 2024 to 17 in Q2 2026

Tracked managers listing it, at least.

0510152020162017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
PEN by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20153$19mn.a.n.a.
Q4 20152$26mn.a.n.a.
Q1 20162$13mn.a.n.a.
Q2 20162$52mn.a.n.a.
Q3 20165$448mn.a.n.a.
Q4 20165$409mn.a.n.a.
Q1 20176$565mn.a.n.a.
Q2 20175$578mn.a.n.a.
Q3 20176$613mn.a.n.a.
Q4 20174$625mn.a.n.a.
Q1 20185$785mn.a.n.a.
Q2 201811$955mn.a.n.a.
Q3 20189$998mn.a.n.a.
Q4 20189$1.2bnn.a.n.a.
Q1 20199$1.6bnn.a.n.a.
Q2 201910$1.8bnn.a.n.a.
Q3 20198$1.4bnn.a.n.a.
Q4 20199$1.4bnn.a.n.a.
Q1 202011$1.6bnn.a.n.a.
Q2 202010$1.8bnn.a.n.a.
Q3 202013$2.3bnn.a.n.a.
Q4 202010$2.5bnn.a.n.a.
Q1 202114$3.6bnn.a.n.a.
Q2 202112$3.3bnn.a.n.a.
Q3 202113$3.3bnn.a.n.a.
Q4 202113$3.5bnn.a.n.a.
Q1 20229$2.5bnn.a.n.a.
Q2 20229$1.3bnn.a.n.a.
Q3 202211$2.0bnn.a.n.a.
Q4 202213$2.6bnn.a.n.a.
Q1 20239$3.5bnn.a.n.a.
Q2 202319$4.2bnn.a.n.a.
Q3 202314$2.8bnn.a.n.a.
Q4 202311$3.3bn65
Q1 202411$2.6bn38
Q2 202410$2.0bn65
Q3 202410$2.0bn64
Q4 202411$2.4bn74
Q1 202514$2.9bn94
Q2 202515$2.7bn116
Q3 202510$2.9bn66
Q4 202516$3.8bn1813
Q1 202620$2.1bn2315
Q2 202617$2.2bn1818

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

PEN and LLY →PEN and JNJ →PEN and VRTX →Choose a stock to compare with PEN →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own PEN, latest filings →Back to the 13F Explorer →