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PEN · Penumbra Inc · Shareholders & Ownership

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$324.19 -0.77 (-0.24%)
Market Cap
$12.80B
Shares
39.39M
Volume · Oct 23 96.26K Avg daily vol (3M) 335.44K

Every disclosed holder of PEN in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns PEN

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions
Holder group Shares % Out
Institutional (13F) 34,131,853 86.65%
Insiders (Forms 3, 4, 5) 1,139,639 2.89%
13D/G-only blocks 0 0.00%
Remaining 4,117,930 10.45%
Registered funds (N-PORT, not summed) 10,480,485 26.61%

Shares outstanding: 39,389,422, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of PEN

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
4,297,555
1.1
iShares Core S&P Mid-Cap ETF
Fund S000004307 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,345,979
1.2
iShares S&P Mid-Cap 400 Growth ETF
Fund S000004308 · Registered fund · Jun 30, 2026
iShares Trust, not summed
235,277
1.3
iShares Russell Mid-Cap Growth ETF
Fund S000004336 · Registered fund · Jun 30, 2026
iShares Trust, not summed
224,266
1.4
iShares U.S. Medical Devices ETF
Fund S000009419 · Registered fund · Jun 30, 2026
iShares Trust, not summed
184,183
1.5
iShares Russell Mid-Cap ETF
Fund S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
156,357
2
HBK INVESTMENTS L P
13F CIK 1011443 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,838,508
3
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,709,877
4
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,667,276
5
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,243,258
5.1
State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
Fund S000006986 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
199,102
5.2
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
Fund S000006987 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
60,839
5.3
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
13,076
5.4
State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF
Fund S000012330 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
7,782
5.5
State Street Institutional Small-Cap Equity Fund
Fund S000001631 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL FUNDS, not summed
7,300
6
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,186,100
7
ExodusPoint Capital Management, LP
13F CIK 1736225 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,090,430
8
Balyasny Asset Management L.P.
13F CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,090,163
9
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,071,454
10
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
856,690
11
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
847,104
11.1
Goldman Sachs U.S. Equity Dividend and Premium Fund
Fund S000009324 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
3,741
11.2
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
1,922
11.3
Goldman Sachs MarketBeta U.S. 1000 Equity ETF
Fund S000075322 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust II, not summed
1,258
11.4
Goldman Sachs Future Health Care Equity ETF
Fund S000072296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
1,015
11.5
Goldman Sachs MarketBeta(R) Russell 1000 Growth Equity ETF
Fund S000083005 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
661
12
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
834,903
13
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
796,471
14
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
752,242
15
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
703,822
16
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
700,611
17
Elsesser Adam
Insider CIK 1651323 · May 19, 2026
Director, CEO, issuer-wide
683,042
18
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
591,824
18.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
49
19
AQR Arbitrage LLC
13F CIK 1167456 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
563,873
20
WHITEBOX ADVISORS LLC
13F CIK 1257391 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
506,881
21
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
494,387
22
Capital World Investors
13F CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
479,701
23
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
450,774
24
CITADEL ADVISORS LLC
13F CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
448,763
25
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
438,553
26
CITIGROUP INC
13F CIK 831001 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
433,125
27
TWO SIGMA INVESTMENTS, LP
13F CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
428,128
28
SMALLCAP World Fund Inc
Fund S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
412,644
29
TUDOR INVESTMENT CORP ET AL
13F CIK 923093 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
400,649
30
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
343,713
30.1
Schwab U.S. Mid-Cap ETF
Fund S000026635 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
106,066
30.2
Schwab U.S. Large-Cap Growth ETF
Fund S000026633 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
83,485
30.3
Schwab U.S. Large-Cap ETF
Fund S000026632 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
41,807
30.4
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
24,193
30.5
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
23,095
31
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
333,064
31.1
Mid Cap Index Fund
Fund S000001273 · Registered fund · Jun 30, 2026
Northern Funds, not summed
25,564
31.2
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
1,422
32
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
326,120
32.1
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
64,949
32.2
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
59,193
32.3
Dimensional U.S. Core Equity 2 ETF
Fund S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
27,709
32.4
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
25,454
32.5
U.S. CORE EQUITY 1 PORTFOLIO
Fund S000000979 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
20,663
33
ALLIANCEBERNSTEIN L.P.
13F CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
301,585
33.1
AB All Market Total Return Portfolio
Fund S000010512 · Registered fund · Jun 30, 2026
AB PORTFOLIOS, not summed
4,939
34
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
266,017
35
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
263,980
35.1
Invesco S&P MidCap Momentum ETF
Fund S000003056 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
190,494
35.2
Invesco RAFI US 1500 Small-Mid ETF
Fund S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
12,870
35.3
Invesco S&P Midcap 400 Pure Growth ETF
Fund S000060795 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
10,222
35.4
Invesco Russell 1000 Dynamic Multifactor ETF
Fund S000064607 · Registered fund · May 31, 2026
Invesco Exchange-Traded Self-Indexed Fund Trust, not summed
6,133
35.5
Invesco S&P Midcap 400 QVM Multi-Factor ETF
Fund S000072319 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
5,014
36
Bose Arani
Insider CIK 1651318 · Feb 13, 2026
Director, issuer-wide
259,609
37
Magnetar Financial LLC
13F CIK 1352851 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
255,841
38
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
251,746
39
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
235,328
39.1
BNY Mellon US Mid Cap Core Equity ETF
Fund S000067261 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
6,335
40
Champlain Investment Partners, LLC
13F CIK 1315478 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
219,032
40.1
Champlain MidCap Fund
Fund S000022606 · Registered fund · Jun 30, 2026
ADVISORS' INNER CIRCLE FUND II, not summed
76,000
40.2
Champlain Small Company Fund
Fund S000005803 · Registered fund · Jun 30, 2026
ADVISORS' INNER CIRCLE FUND II, not summed
44,000
41
TIG Advisors, LLC
13F CIK 1358253 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
215,082
42
LMR Partners LLP
13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
213,893
43
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
211,002
43.1
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
202,400
43.2
Fidelity Mid Cap Index Fund
Fund S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
144,265
43.3
VIP Contrafund Portfolio
Fund S000007724 · Registered fund · Jun 30, 2026
Variable Insurance Products Fund II, not summed
124,665
43.4
Fidelity SAI Merger Arbitrage Fund
Fund S000091043 · Registered fund · Jul 31, 2026
Fidelity Greenwood Street Trust, not summed
80,000
43.5
Fidelity Total Market Index Fund
Fund S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
74,126
44
Hudson Bay Capital Management LP
13F CIK 1393825 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
203,138
45
D. E. Shaw & Co., Inc.
13F CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
197,329
46
ALPINE ASSOCIATES MANAGEMENT INC.
13F CIK 1396835 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
188,986
47
Melqart Asset Management (UK) Ltd
13F CIK 1712901 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
185,734
48
CAXTON ASSOCIATES LLP
13F CIK 2051323 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
179,384
49
ADAGE CAPITAL PARTNERS GP, L.L.C.
13F CIK 1165408 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
176,720
50
Birnam Oak Advisors, LP
13F CIK 1997245 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
171,277

70 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 596 holders

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Key facts CIK 1321732 CUSIP 70975L107 13F (30d) 62 filings 58 filers Visit website Investor relations