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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, Q2 2021

Institutional positions in Masimo Corp as of Jun 30, 2021. 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
459
−20 vs. Q1 2021
Shares held
45.8M
+1.39M (+3.1%) vs. Q1 2021
Total value
$11.1B
+$909.0M (+8.9%) vs. Q1 2021
New holders
45
165 more added
Sold out
65
172 more reduced

2 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2021: 459 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 heldQ2 2021: $11.1B
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, Q2 2021

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2021.

Institutions holding MASI in Q2 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Sofos Investments, Inc.0$242.0K0.11%0Unchanged
Jefferies Group LLC1,000$242.4K0.00%+1,000New
Hills Bank & Trust Co1,007$244.0K0.04%+1,007New
Laurel Wealth Advisors, Inc.1,020$247.0K0.03%00.0%Unchanged
Maverick Capital LtdSuperinvestorMaverick Capital1,051$255.0K0.00%+133+14.5%Added
Hennion & Walsh Asset Management, Inc.1,077$261.0K0.01%+1,077New
Eqis Capital Management, Inc.1,083$263.0K0.02%+82+8.2%Added
Northwestern Mutual Wealth Management Co1,119$271.0K0.00%−157−12.3%Reduced
Regal Investment Advisors LLC1,122$272.0K0.03%+1,122New
Whittier Trust Co1,134$275.0K0.00%+134+13.4%Added
Redpoint Investment Management Pty Ltd1,161$281.0K0.02%+152+15.1%Added
Advisor Partners LLC1,183$287.0K0.02%−37−3.0%Reduced
Patten Group, Inc.1,197$290.0K0.09%−220−15.5%Reduced
PRW Wealth Management LLC1,197$290.0K0.09%+1,197New
First Citizens Bank & Trust Co1,202$291.0K0.01%−153−11.3%Reduced
CIBC World Markets Inc.1,212$294.0K0.00%+326+36.8%Added
Federation des caisses Desjardins du Quebec1,224$296.4K0.00%−113−8.5%Reduced
Wealthfront Advisers LLC1,225$297.0K0.00%−81−6.2%Reduced
Financial Advocates Investment Management1,260$306.0K0.02%−19−1.5%Reduced
Conestoga Capital Advisors, LLC1,270$308.0K0.00%+175+16.0%Added
M&G Investment Management Ltd1,276$309.0K0.00%+1,276New
Coldstream Capital Management Inc1,290$313.0K0.01%+23+1.8%Added
Captrust Financial Advisors1,297$314.0K0.00%−47−3.5%Reduced
Engineers Gate Manager LP1,303$316.0K0.02%−8,412−86.6%Reduced
Paloma Partners Management Co1,305$317.0K0.01%−3,144−70.7%Reduced
Bowling Portfolio Management LLC1,311$318.0K0.07%+280+27.2%Added
Kestra Advisory Services, LLC1,316$319.0K0.00%+1,316New
Capital Analysts, LLC1,335$324.0K0.02%+1,335New
Capula Management Ltd1,339$325.0K0.06%+1,339New
Banco Bilbao Vizcaya Argentaria, S.A.1,373$333.0K0.01%+1,373New
IBM Retirement Fund1,410$342.0K0.03%−269−16.0%Reduced
First Heartland Consultants, Inc.1,435$348.0K0.05%+400+38.6%Added
CAPROCK Group, Inc.1,459$354.0K0.03%+10+0.7%Added
Silvercrest Asset Management Group LLC1,465$355.0K0.00%+41+2.9%Added
Buckhead Capital Management LLC1,465$355.0K0.08%+115+8.5%Added
Alyeska Investment Group, L.P.1,465$355.0K0.00%+1,465New
EFG Asset Management (Americas) Corp.1,477$358.0K0.07%−7,338−83.2%Reduced
Alps Advisors Inc1,475$358.0K0.00%00.0%Unchanged
Keybank National Association1,481$359.0K0.00%−485−24.7%Reduced
GWM Advisors LLC1,488$361.0K0.01%−502−25.2%Reduced
Tocqueville Asset Management L.P.1,500$364.0K0.01%00.0%Unchanged
AE Wealth Management LLC1,528$370.0K0.00%+318+26.3%Added
Cigna Investments Inc1,571$381.0K0.03%−300−16.0%Reduced
Red Spruce Capital, LLC1,593$386.0K0.23%+38+2.4%Added
Harvest Investment Services, LLC1,751$424.0K0.18%−79−4.3%Reduced
World Asset Management Inc1,771$429.0K0.04%−61−3.3%Reduced
Bluestein R H & Co1,800$436.0K0.02%−1,200−40.0%Reduced
Vestcor Inc1,807$438.0K0.01%−3,430−65.5%Reduced
Gotham Asset Management, LLC1,825$442.0K0.02%+12+0.7%Added
Equitable Trust Co1,831$444.0K0.03%+1,831New
Jump Financial, LLC1,830$444.0K0.04%+1,830New
Blair William & Co1,845$447.0K0.00%−713−27.9%Reduced
Quantinno Capital Management LP1,842$447.0K0.51%+761+70.4%Added
Janney Capital Management LLC1,873$454.0K0.03%+5+0.3%Added
Oppenheimer & Co Inc1,907$462.0K0.01%−646−25.3%Reduced
Los Angeles Capital Management LLC1,970$478.0K0.00%00.0%Unchanged
Acadian Asset Management LLC2,120$514.0K0.00%+241+12.8%Added
Franklin Resources Inc2,132$516.0K0.00%−756−26.2%Reduced
BancorpSouth Bank2,172$527.0K0.08%00.0%Unchanged
Symmetry Partners, LLC2,178$528.0K0.04%00.0%Unchanged
Independent Advisor Alliance2,274$551.0K0.03%−50−2.2%Reduced
Banque Cantonale Vaudoise2,300$557.0K0.02%+2,000+666.7%Added
M&T Bank Corp2,317$562.0K0.00%+31+1.4%Added
Commerce Bank2,340$568.0K0.00%+10+0.4%Added
Moneta Group Investment Advisors LLC2,409$584.0K0.03%−1,810−42.9%Reduced
KCM Investment Advisors LLC2,435$590.0K0.02%00.0%Unchanged
Formuepleje A/S2,440$591.6K0.02%+154+6.7%Added
Fosun International Ltd2,400$593.0K0.04%−1,100−31.4%Reduced
Legal Advantage Investments, Inc.2,475$600.0K0.41%00.0%Unchanged
Nordea Investment Management AB2,479$601.0K0.00%00.0%Unchanged
Raymond James Trust N.A.2,482$602.0K0.02%+147+6.3%Added
Intrust Bank NA2,485$603.0K0.08%−42−1.7%Reduced
Daiwa Securities Group Inc.2,493$604.0K0.00%+100+4.2%Added
American Portfolios Advisors2,503$606.9K0.02%+50+2.0%Added
Guardian Capital LP2,578$625.0K0.01%00.0%Unchanged
Susquehanna International Group, LLP2,646$642.0K0.00%−13,861−84.0%Reduced
Panagora Asset Management Inc2,654$643.0K0.00%+489+22.6%Added
Robeco Institutional Asset Management B.V.2,784$675.0K0.00%−3,286−54.1%Reduced
Van Eck Associates Corp2,849$691.0K0.00%+113+4.1%Added
Shelton Capital Management2,858$693.0K0.03%00.0%Unchanged
STRS Ohio2,920$707.0K0.00%−1,567−34.9%Reduced
Crown Advisors Management, Inc.3,000$727.0K0.52%−5,000−62.5%Reduced
DAFNA Capital Management LLC3,000$727.0K0.15%00.0%Unchanged
Cubist Systematic Strategies, LLC3,156$765.0K0.01%−34,963−91.7%Reduced
Profund Advisors LLC3,320$805.0K0.03%−78−2.3%Reduced
Arthur M. Cohen & Associates, LLC3,340$810.0K0.17%−10.0%Reduced
National Pension Service3,405$826.0K0.00%+405+13.5%Added
Schonfeld Strategic Advisors LLC3,458$838.0K0.01%+958+38.3%Added
Meiji Yasuda Asset Management Co Ltd.3,535$857.0K0.04%+50+1.4%Added
Cambridge Investment Research Advisors, Inc.3,553$861.0K0.00%+918+34.8%Added
Oxford Financial Group Ltd3,642$883.0K0.12%+212+6.2%Added
Institutional & Family Asset Management, LLC3,650$885.0K0.15%00.0%Unchanged
Sumitomo Mitsui DS Asset Management Company, Ltd3,720$901.0K0.02%+36+1.0%Added
Knowledge Leaders Capital, LLC3,735$906.0K0.61%+3,735New
Marshall Wace North America L.P.3,756$911.0K0.00%−1,795−32.3%Reduced
Nisa Investment Advisors, LLC3,817$925.0K0.01%−100−2.6%Reduced
First Trust Advisors LP3,954$958.0K0.00%−66,227−94.4%Reduced
Westpac Banking Corp3,952$958.2K0.01%00.0%Unchanged
Maryland State Retirement & Pension System3,736$961.0K0.03%00.0%Unchanged
Stoneridge Investment Partners LLC3,987$967.0K0.47%+3,987New