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Livermore
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Masimo Corp

MASIDelisted Jun 10, 2026
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0000937556

Masimo Corp was delisted on Jun 10, 2026; its insiders filed their last Form 4 on Jun 12, 2026; 451 institutions reported holding it in 13F filings for Q1 2026, worth $9.69B in total; Soros Fund Management was the only superinvestor holding it.

13F holders, Q1 2022

Institutional positions in Masimo Corp as of Mar 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
457
−57 vs. Q4 2021
Shares held
45.4M
−981.6K (−2.1%) vs. Q4 2021
Total value
$6.61B
−$6.96B (−51.3%) vs. Q4 2021
New holders
73
180 more added
Sold out
130
136 more reduced

6 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MASI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2022: 457 institutions
Q1 2021: 481 institutionsQ2 2021: 459 institutionsQ3 2021: 475 institutionsQ4 2021: 520 institutionsQ1 2022: 457 institutionsQ2 2022: 417 institutionsQ3 2022: 418 institutionsQ4 2022: 405 institutionsQ1 2023: 428 institutionsQ2 2023: 415 institutionsQ3 2023: 357 institutionsQ4 2023: 342 institutionsQ1 2024: 339 institutionsQ2 2024: 352 institutionsQ3 2024: 362 institutionsQ4 2024: 366 institutionsQ1 2025: 393 institutionsQ2 2025: 379 institutionsQ3 2025: 358 institutionsQ4 2025: 392 institutionsQ1 2026: 451 institutionsQ2 2026: 2 institutions
Value heldQ1 2022: $6.61B
Q1 2021: $10.3BQ2 2021: $11.1BQ3 2021: $12.5BQ4 2021: $13.6BQ1 2022: $6.61BQ2 2022: $5.81BQ3 2022: $6.54BQ4 2022: $6.58BQ1 2023: $8.30BQ2 2023: $7.56BQ3 2023: $4.18BQ4 2023: $5.91BQ1 2024: $7.59BQ2 2024: $6.24BQ3 2024: $6.72BQ4 2024: $8.50BQ1 2025: $9.02BQ2 2025: $9.68BQ3 2025: $8.29BQ4 2025: $7.20BQ1 2026: $9.69BQ2 2026: $16.2K
Institutions holding MASI and their total value by quarter
QuarterHoldersValue
Q2 20262$16.2K
Q1 2026451$9.69B
Q4 2025392$7.20B
Q3 2025358$8.29B
Q2 2025379$9.68B
Q1 2025393$9.02B
Q4 2024366$8.50B
Q3 2024362$6.72B
Q2 2024352$6.24B
Q1 2024339$7.59B
Q4 2023342$5.91B
Q3 2023357$4.18B
Q2 2023415$7.56B
Q1 2023428$8.30B
Q4 2022405$6.58B
Q3 2022418$6.54B
Q2 2022417$5.81B
Q1 2022457$6.61B
Q4 2021520$13.6B
Q3 2021475$12.5B
Q2 2021459$11.1B
Q1 2021481$10.3B

Institutions, Q1 2022

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2021.

Institutions holding MASI in Q1 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Concord Wealth Partners91$13.0K0.00%−15−14.2%Reduced
Clearstead Advisors, LLC90$13.0K0.00%+75+500.0%Added
Covestor Ltd81$12.0K0.01%+25+44.6%Added
Sageworth Trust Co of South Dakota76$11.0K0.02%−56−42.4%Reduced
Quent Capital, LLC74$11.0K0.00%+13+21.3%Added
Smithfield Trust Co65$10.0K0.00%−33−33.7%Reduced
Asset Dedication, LLC68$10.0K0.00%00.0%Unchanged
Allworth Financial LP70$10.0K0.00%+20+40.0%Added
Glassman Wealth Services72$10.0K0.00%+60+500.0%Added
Heritage Wealth Management, LLC60$9.00K0.00%+60New
Toth Financial Advisory Corp50$7.00K0.00%00.0%Unchanged
Clean Yield Group49$7.00K0.00%00.0%Unchanged
Holloway Wealth Management, LLC–$7.00K0.00%––
Princeton Global Asset Management LLC46$7.00K0.00%+46New
Hantz Financial Services, Inc.39$6.00K0.00%+39New
RE Dickinson Investment Advisors, LLC32$5.00K0.00%00.0%Unchanged
Tortoise Investment Management, LLC32$5.00K0.00%+32New
West Branch Capital LLC33$5.00K0.00%+33New
Global Retirement Partners, LLC37$5.00K0.00%+37New
Capital Advisory Group Advisory Services, LLC36$5.00K0.00%+36New
Newbridge Financial Services Group, Inc.37$5.00K0.00%+37New
Earnest Partners LLC27$4.00K0.00%00.0%Unchanged
Delos Wealth Advisors, LLC26$4.00K0.00%00.0%Unchanged
Lloyd Advisory Services, LLC.25$4.00K0.00%+25New
Anchor Investment Management, LLC22$3.20K0.00%+22New
Harvest Fund Management Co., Ltd26$3.00K0.00%00.0%Unchanged
Geneos Wealth Management Inc.25$3.00K0.00%00.0%Unchanged
Bedel Financial Consulting, Inc.19$3.00K0.00%00.0%Unchanged
RWM Asset Management, LLC21$3.00K0.00%00.0%Unchanged
Rise Advisors, LLC20$3.00K0.00%00.0%Unchanged
Massmutual Trust Co FSB21$3.00K0.00%+9+75.0%Added
First Horizon Advisors, Inc.14$2.00K0.00%−214−93.9%Reduced
TCI Wealth Advisors, Inc.17$2.00K0.00%−20−54.1%Reduced
CVA Family Office, LLC15$2.00K0.00%−5−25.0%Reduced
BDO Wealth Advisors, LLC17$2.00K0.00%00.0%Unchanged
Dixon Hughes Goodman Wealth Advisors LLC16$2.00K0.00%00.0%Unchanged
Adirondack Trust Co12$2.00K0.00%00.0%Unchanged
FinTrust Capital Advisors, LLC13$2.00K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC13$2.00K0.00%+8+160.0%Added
TCWP LLC20$2.00K0.00%+20New
National Pension Service8$1.00K0.00%00.0%Unchanged
Versant Capital Management, Inc5$1.00K0.00%00.0%Unchanged
Sofos Investments, Inc.146$1.00K0.00%−147−50.2%Reduced
Schubert & Co5$1.00K0.00%00.0%Unchanged
Disciplined Investments, LLC4$1.00K0.00%+4New
CFS Investment Advisory Services, LLC82,521$1.00K0.00%+82,521New
Sutton Wealth Advisors Inc.2$2910.00%−3−60.0%Reduced
Exane Derivatives2$2910.00%00.0%Unchanged
Macroview Investment Management LLC3$00.00%00.0%Unchanged
Stonebridge Capital Advisors LLC2$00.00%00.0%Unchanged
Huntington National Bank2$00.00%00.0%Unchanged
Private Ocean, LLC1$00.00%+1New
Horan Securities, Inc.3$00.00%+3New
Bellwether Advisors, LLC4$00.00%+4New
Cordant, Inc.1$00.00%+1New
SJS Investment Consulting Inc.1$00.00%+1New
Longfellow Investment Management Co LLC2––00.0%Unchanged
Erste Asset Management GmbH0$00.00%−53,000−100.0%Sold out
Massachusetts Financial Services Co0$00.00%−855,583−100.0%Sold out
Vaughan Nelson Investment Management, L.P.0$00.00%−745,800−100.0%Sold out
D1 Capital Partners L.P.SuperinvestorD1 Capital Partners0$00.00%−507,397−100.0%Sold out
Eagle Asset Management Inc0$00.00%−238,353−100.0%Sold out
Natixis Investment Managers International0$00.00%−204,620−100.0%Sold out
Natixis Advisors, L.P.0$00.00%−199,966−100.0%Sold out
Epoch Investment Partners, Inc.0$00.00%−196,081−100.0%Sold out
Bellevue Group AG0$00.00%−131,376−100.0%Sold out
Adage Capital Partners GP, L.L.C.0$00.00%−80,000−100.0%Sold out
AXA S.A.0$00.00%−63,280−100.0%Sold out
Dai-Ichi Life Insurance Company, Ltd0$00.00%−36,132−100.0%Sold out
Ravenstone Capital Management Inc.0$00.00%−25,975−100.0%Sold out
Railway Pension Investments Ltd0$00.00%−24,500−100.0%Sold out
EFG Asset Management (North America) Corp.0$00.00%−22,639−100.0%Sold out
McKinley Capital Management LLC /Delaware0$00.00%−21,330−100.0%Sold out
Cinctive Capital Management LP0$00.00%−19,144−100.0%Sold out
Weiss Multi-Strategy Advisers LLC0$00.00%−17,209−100.0%Sold out
Autus Asset Management, LLC0$00.00%−16,763−100.0%Sold out
Fred Alger Management, LLC0$00.00%−16,572−100.0%Sold out
Lisanti Capital Growth, LLC0$00.00%−14,190−100.0%Sold out
Polar Capital Holdings Plc0$00.00%−13,544−100.0%Sold out
Advisors Asset Management, Inc.0$00.00%−13,028−100.0%Sold out
Natixis0$00.00%−11,910−100.0%Sold out
Metropolitan Life Insurance Co0$00.00%−10,765−100.0%Sold out
Integral Health Asset Management, LLC0$00.00%−10,000−100.0%Sold out
HighTower Trust Services, LTA0$00.00%−9,398−100.0%Sold out
Azzad Asset Management Inc0$00.00%−8,390−100.0%Sold out
Congress Asset Management Co0$00.00%−7,517−100.0%Sold out
Pacer Advisors, Inc.0$00.00%−7,206−100.0%Sold out
Renaissance Technologies LLC0$00.00%−6,200−100.0%Sold out
Seaport Global Advisors, LLC0$00.00%−5,301−100.0%Sold out
Allianz Asset Management GmbH0$00.00%−4,589−100.0%Sold out
Sciencast Management LP0$00.00%−4,777−100.0%Sold out
Altman Advisors, Inc.0$00.00%−5,805−100.0%Sold out
Oppenheimer & Co Inc0$00.00%−3,781−100.0%Sold out
Congress Wealth Management LLC0$00.00%−3,666−100.0%Sold out
Doliver Advisors, LP0$00.00%−4,413−100.0%Sold out
Qtron Investments LLC0$00.00%−3,241−100.0%Sold out
Level Four Advisory Services, LLC0$00.00%−3,202−100.0%Sold out
Crown Advisors Management, Inc.0$00.00%−3,000−100.0%Sold out
Moneta Group Investment Advisors LLC0$00.00%−2,411−100.0%Sold out
XTX Topco Ltd0$00.00%−2,409−100.0%Sold out