13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Surgical & Medical Instruments & ApparatusCyclicalNet sold
PEN

PENUMBRA INC

495 institutions still hold PENUMBRA INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 70975L107·Surgical & Medical Instruments & Apparatus·495 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 3.9%
vs prior quarter
13F value held
$6.6B
57.0% inst. owned
of float
Holders
495
+82 QoQ
filers reporting
Activity
+61 / −8
+956 added · −795 reduced
this quarter
Concentration
21.43%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

495 institutions reported PEN in Q1 2026. BlackRock, Inc. leads at 21.4% of the visible book. +82 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.4B4.3M0.02%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$556M1.7M0.01%Q1 202603
Vanguard Portfolio Management
CIK 0002100121
$543M1.7M0.03%Q1 202604
HBK INVESTMENTS L P
CIK 0001011443
$537M1.6M5.45%Q1 202605
STATE STREET CORP
CIK 0000093751
$389M1.2M0.01%Q1 202606
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$376M1.1M0.16%Q1 202607
CITADEL ADVISORS LLC
CIK 0001423053
$316M1.0M0.05%Q4 202508
BAILLIE GIFFORD & CO
CIK 0001088875
$276M840K0.28%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$261M795K0.02%Q1 202610
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$250M762K0.32%Q1 202611
GOLDMAN SACHS GROUP INC
CIK 0000886982
$237M721K0.03%Q1 202612
CITIGROUP INC
CIK 0000831001
$204M621K0.09%Q1 202613
UBS Group AG
CIK 0001610520
$184M560K0.03%Q1 202614
Invesco Ltd.
CIK 0000914208
$177M538K0.03%Q1 202615
FMR LLC
CIK 0000315066
$163M496K0.01%Q1 202616
Champlain Investment Partners, LLC
CIK 0001315478
$161M491K2.05%Q1 202617
ExodusPoint Capital Management, LP
CIK 0001736225
$153M465K1.21%Q1 202618
Capital World Investors
CIK 0001422849
$148M451K0.02%Q1 202619
WHITEBOX ADVISORS LLC
CIK 0001257391
$146M445K1.80%Q1 202620
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
$135M411K0.25%Q1 2026
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