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PEN

Penumbra Inc
$318.57 +2.14 (+0.68%) At close · Jul 2
Market Cap
$12.53B
Shares
39,331,425

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 481
Total Value: $10,740,205,483
Total Shares: 32,707,638
Showing 1–100 of 495 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Superinvestors Holding PEN

All superinvestors →
George Soros $66,801,622 Ray Dalio $3,296,178 Joel Greenblatt $2,914,283

Holder Concentration

Across 481 13F filers
Top Holder
13.2%
Jun 2023 → Mar 2026 · range 13.2% – 16.9%
of institutional value
Top 5
30.5%
Jun 2023 → Mar 2026 · range 30.5% – 54.5%
of institutional value
Top 10
42.0%
Jun 2023 → Mar 2026 · range 42.0% – 65.7%
of institutional value
HHI
322
Jun 2023 → Mar 2026 · range 322 – 688
Broadly held
Showing 100 of 495
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $1,421,991,825 13.24% 4,330,456
Mega VANGUARD CAPITAL MANAGEMENT LLC $556,419,024 5.18% 1,694,488
Mid HBK INVESTMENTS L P $536,642,284 5.00% 1,634,261
Mega STATE STREET CORP $389,384,758 3.63% 1,185,811
Mega MILLENNIUM MANAGEMENT LLC $360,594,918 3.36% 1,098,136
Large BAILLIE GIFFORD & CO $275,971,011 2.57% 840,427
Mega GEODE CAPITAL MANAGEMENT, LLC $261,201,259 2.43% 795,448
Large Balyasny Asset Management L.P. $250,249,463 2.33% 762,096
Mega GOLDMAN SACHS GROUP INC $236,615,212 2.20% 720,575
Mega CITIGROUP INC $203,899,052 1.90% 620,943
Mega UBS Group AG $183,997,200 1.71% 560,335
Mega Invesco Ltd. $176,727,745 1.65% 538,197
Mega FMR LLC $162,906,653 1.52% 496,107
Mid Champlain Investment Partners, LLC $161,355,107 1.50% 491,382
Large ExodusPoint Capital Management, LP $152,762,649 1.42% 465,215
Mega Capital World Investors $148,034,121 1.38% 450,815
Mid WHITEBOX ADVISORS LLC $146,124,978 1.36% 445,001
Mid AQR Arbitrage LLC $138,924,481 1.29% 423,073
Large TUDOR INVESTMENT CORP ET AL $134,998,817 1.26% 411,118
Mega JPMORGAN CHASE & CO $132,207,999 1.23% 402,619
Mega MORGAN STANLEY $131,793,263 1.23% 401,356
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $131,400,539 1.22% 400,160
Large Hudson Bay Capital Management LP $114,613,607 1.07% 349,038
Mega Amundi $113,536,553 1.06% 345,758
Mega DIMENSIONAL FUND ADVISORS LP $106,997,062 1.00% 325,843
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $105,871,741 0.99% 322,416
Mega NORTHERN TRUST CORP Bank $105,358,497 0.98% 320,853
Large CONGRESS ASSET MANAGEMENT CO $104,203,950 0.97% 317,337
Mega NEUBERGER BERMAN GROUP LLC $99,700,027 0.93% 303,621
Large LMR Partners LLP $97,101,635 0.90% 295,708
Mega BANK OF AMERICA CORP /DE/ Bank $85,302,315 0.79% 259,775
Mid Magnetar Financial LLC $82,563,053 0.77% 251,433
Mega VANGUARD FIDUCIARY TRUST CO Bank $81,184,556 0.76% 247,235
Mega Bank of New York Mellon Corp Bank $80,952,063 0.75% 246,527
Large Woodline Partners LP $79,333,206 0.74% 241,597
Mega ALLIANCEBERNSTEIN L.P. $74,315,713 0.69% 226,317
Large BANK OF NOVA SCOTIA Bank $69,555,333 0.65% 211,820
Mid SOROS FUND MANAGEMENT LLC $66,801,622 0.62% 203,434
Mega CITADEL ADVISORS LLC $66,568,808 0.62% 202,725
Mega D. E. Shaw & Co., Inc. $66,314,320 0.62% 201,950
Large Thrivent Financial for Lutherans $61,775,919 0.58% 188,129
Mid CAXTON ASSOCIATES LLP $60,637,789 0.56% 184,663
Small Decagon Asset Management LLP $55,030,871 0.51% 167,588
Mega JANUS HENDERSON GROUP PLC $54,855,521 0.51% 167,054
Mid Kryger Capital LLC $50,519,067 0.47% 153,848
Large Squarepoint Ops LLC $48,535,056 0.45% 147,806
Small PFM Health Sciences, LP $45,899,230 0.43% 139,779
Large CAPITOLIS LIQUID GLOBAL MARKETS LLC $45,774,121 0.43% 139,398
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $44,329,950 0.41% 135,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $43,903,069 0.41% 133,700
Mid ALPINE ASSOCIATES MANAGEMENT INC. $43,328,421 0.40% 131,950
Mid Rock Springs Capital Management LP $39,568,585 0.37% 120,500
Small WATER ISLAND CAPITAL LLC $39,435,595 0.37% 120,095
Large NATIXIS $38,166,116 0.36% 116,229
Large Holocene Advisors, LP $36,322,319 0.34% 110,614
Mega RHUMBLINE ADVISERS $36,177,508 0.34% 110,173
Mega HSBC HOLDINGS PLC $36,177,505 0.34% 110,173
Mid BRAIDWELL LP $34,594,436 0.32% 105,352
Large SG Americas Securities, LLC Broker-Dealer $33,505,232 0.31% 102,035
Mid Capula Management Ltd $33,421,170 0.31% 101,779
Small Slotnik Capital, LLC $33,165,370 0.31% 101,000
Mega Nuveen, LLC $33,079,992 0.31% 100,740
Mega Clearbridge Investments, LLC $31,896,219 0.30% 97,135
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $31,758,298 0.30% 96,715
Small Birnam Oak Advisors, LP $31,520,236 0.29% 95,990
Mid GLAZER CAPITAL, LLC $31,135,715 0.29% 94,819
Mega PRINCIPAL FINANCIAL GROUP INC $28,955,009 0.27% 88,178
Small Sand Grove Capital Management LLP $28,488,724 0.27% 86,758
Mega BNP PARIBAS ARBITRAGE, SA $28,382,004 0.26% 86,433
Mid Empyrean Capital Partners, LP $27,911,450 0.26% 85,000
Mid Melqart Asset Management (UK) Ltd $26,867,890 0.25% 81,822
Mid PICTON MAHONEY ASSET MANAGEMENT $26,269,600 0.24% 80,000
Mid Alberta Investment Management Corp $26,269,600 0.24% 80,000
Large Allspring Global Investments Holdings, LLC $26,236,105 0.24% 79,898
Mega AQR CAPITAL MANAGEMENT LLC $25,404,015 0.24% 77,364
Mid Westchester Capital Management, LLC $25,162,991 0.23% 76,630
Mega FIRST TRUST ADVISORS LP $24,700,976 0.23% 75,223
Large Man Group plc $24,519,387 0.23% 74,670
Mega Swiss National Bank Bank $24,161,464 0.22% 73,580
Mid C WorldWide Group Holding A/S $23,642,640 0.22% 72,000
Small CARRET ASSET MANAGEMENT, LLC $23,642,640 0.22% 72,000
Mid Susquehanna Portfolio Strategies, LLC $23,126,442 0.22% 70,428
Mega AMERICAN CENTURY COMPANIES INC $22,983,929 0.21% 69,994
Mid NZS Capital, LLC $22,652,932 0.21% 68,986
Large Verition Fund Management LLC $22,329,160 0.21% 68,000
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $22,279,904 0.21% 67,850
Large Calamos Advisors LLC $21,962,042 0.20% 66,882
Mega Legal & General Group Plc $20,094,601 0.19% 61,195
Mega California Public Employees Retirement System Pension $19,840,443 0.18% 60,421
Mid TIG Advisors, LLC $19,729,126 0.18% 60,082
Mega TWO SIGMA INVESTMENTS, LP $19,117,373 0.18% 58,219
Mid Sculptor Capital LP $18,717,090 0.17% 57,000
Large GABELLI FUNDS LLC $18,593,294 0.17% 56,623
Large ING GROEP NV $18,336,509 0.17% 55,841
Mega VICTORY CAPITAL MANAGEMENT INC $17,330,055 0.16% 52,776
Small GABELLI & Co INVESTMENT ADVISERS, INC. $16,974,102 0.16% 51,692
Mid Nearwater Capital Markets, Ltd $16,418,500 0.15% 50,000
Micro Ursa Fund Management, LLC $16,352,826 0.15% 49,800
Large Retirement Systems of Alabama Pension $15,792,626 0.15% 48,094
Mega MILLENNIUM MANAGEMENT LLC $15,761,760 0.15% 48,000
Key facts CIK 1321732 CUSIP 70975L107 13F (30d) 6 filings 5 filers Visit website

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