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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 2023

Institutional positions in Masimo Corp as of Jun 30, 2023. 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
415
−13 vs. Q1 2023
Shares held
46.0M
+958.6K (+2.1%) vs. Q1 2023
Total value
$7.56B
−$738.3M (−8.9%) vs. Q1 2023
New holders
45
114 more added
Sold out
58
171 more reduced

Compare with Q1 2023: 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 2023: 415 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 2023: $7.56B
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 2023

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2023.

Institutions holding MASI in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Tower Research Capital LLC (TRC)6,342$1.04M0.03%+4,162+190.9%Added
Public Employees Retirement Association of Colorado6,209$1.02M0.00%−1,328−17.6%Reduced
STRS Ohio6,068$998.0K0.00%−230−3.7%Reduced
Prudential Financial Inc6,046$994.9K0.00%+1,880+45.1%Added
State of Alaska, Department of Revenue6,019$990.0K0.01%−647−9.7%Reduced
The PNC Financial Services Group, Inc.5,878$967.2K0.00%−50−0.8%Reduced
Mariner, LLC5,790$952.7K0.00%−7−0.1%Reduced
Panagora Asset Management Inc5,504$905.7K0.01%00.0%Unchanged
Oppenheimer & Co Inc5,415$891.0K0.02%+5,415New
North Star Asset Management Inc5,361$882.2K0.05%−194−3.5%Reduced
AQR Capital Management LLC5,103$839.7K0.00%−8,498−62.5%Reduced
American Century Companies Inc5,102$839.5K0.00%+144+2.9%Added
Inspire Advisors, LLC5,049$830.8K0.16%+745+17.3%Added
PEAK6 Investments LLC4,925$810.4K0.07%+4,925New
Private Advisor Group, LLC4,845$797.2K0.01%+243+5.3%Added
Nissay Asset Management Corp4,832$795.1K0.01%−571−10.6%Reduced
Janus Henderson Group PLC4,705$774.3K0.00%−610−11.5%Reduced
Vontobel Holding Ltd.4,705$774.2K0.01%−2,083−30.7%Reduced
Stifel Financial Corp4,644$764.2K0.00%+2,731+142.8%Added
Baird Financial Group, Inc.4,637$763.0K0.00%+1,878+68.1%Added
Juncture Wealth Strategies, LLC4,621$760.4K0.36%+4,621New
Graham Capital Management, L.P.4,581$753.8K0.03%−4,216−47.9%Reduced
Gulf International Bank (UK) Ltd4,562$750.0K0.02%−2,012−30.6%Reduced
Raymond James Trust N.A.4,504$741.0K0.02%−300−6.2%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC4,434$729.6K0.05%+4,319+3,755.7%Added
Pathstone Family Office, LLC4,128$729.6K0.01%+292+7.6%Added
HighTower Advisors, LLC4,436$727.0K0.00%+2,298+107.5%Added
Steel Peak Wealth Management LLC4,417$726.8K0.04%+1,366+44.8%Added
Securian Asset Management, Inc4,313$709.7K0.02%−100−2.3%Reduced
Macquarie Group Ltd4,126$678.9K0.00%00.0%Unchanged
Allianz Asset Management GmbH4,023$662.0K0.00%−2,386−37.2%Reduced
Guggenheim Capital LLC3,992$656.9K0.01%−779−16.3%Reduced
Arkadios Wealth Advisors3,984$655.6K0.08%+19+0.5%Added
Simplex Trading, LLC3,965$652.0K0.03%+630+18.9%Added
FORA Capital, LLC3,923$645.5K0.09%+3,923New
Maryland State Retirement & Pension System3,736$614.8K0.01%00.0%Unchanged
MML Investors Services, LLC3,682$606.0K0.00%+175+5.0%Added
Verus Capital Partners, LLC3,651$600.8K0.09%00.0%Unchanged
Institutional & Family Asset Management, LLC3,650$600.6K0.10%00.0%Unchanged
Red Spruce Capital, LLC3,558$585.5K0.32%+1,212+51.7%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund3,500$576.0K0.01%+200+6.1%Added
Harbor Capital Advisors, Inc.3,466$570.3K0.11%+3,466New
Terry L. Blaker3,459$569.2K0.05%00.0%Unchanged
Nordea Investment Management AB3,397$565.6K0.00%−230−6.3%Reduced
Oxford Financial Group Ltd3,430$564.4K0.05%00.0%Unchanged
PAX Financial Group, LLC3,427$563.9K0.13%+513+17.6%Added
Teacher Retirement System of Texas3,381$556.0K0.00%−37,521−91.7%Reduced
Franklin Resources Inc3,312$545.0K0.00%+30+0.9%Added
M&G Investment Management Ltd3,158$521.1K0.00%+135+4.5%Added
Sumitomo Mitsui DS Asset Management Company, Ltd3,101$510.3K0.01%−12−0.4%Reduced
Qtron Investments LLC3,059$503.4K0.10%00.0%Unchanged
DAFNA Capital Management LLC3,000$493.6K0.13%00.0%Unchanged
Sigma Planning Corp2,995$492.8K0.02%+189+6.7%Added
Daiwa Securities Group Inc.2,923$481.0K0.00%00.0%Unchanged
Crossmark Global Holdings, Inc.3,891$480.0K0.01%−280−6.7%Reduced
Endurant Capital Management LP2,850$469.0K0.60%+2,850New
ProShare Advisors LLC2,837$466.8K0.00%−185−6.1%Reduced
Wexford Capital LP2,820$464.0K0.09%+2,820New
Prudential PLC2,783$457.9K0.01%00.0%Unchanged
Silvercrest Asset Management Group LLC2,782$457.8K0.00%+810+41.1%Added
CI Private Wealth, LLC2,692$443.0K0.00%−1,169−30.3%Reduced
Mitsubishi UFJ Asset Management (UK) Ltd.2,600$428.0K0.28%00.0%Unchanged
Caxton Associates LP2,568$422.6K0.06%+2,568New
Buckhead Capital Management LLC2,545$418.8K0.10%00.0%Unchanged
KCM Investment Advisors LLC2,515$413.8K0.02%−18,000−87.7%Reduced
Independent Advisor Alliance2,457$404.3K0.02%+162+7.1%Added
Blair William & Co2,419$398.0K0.00%−227−8.6%Reduced
Shelton Capital Management2,384$392.3K0.01%−90−3.6%Reduced
Coldstream Capital Management Inc2,347$386.2K0.01%−35−1.5%Reduced
Seaport Global Advisors, LLC2,336$384.4K1.13%−576−19.8%Reduced
Bank of Nova Scotia2,188$360.2K0.00%−122−5.3%Reduced
Advisors Asset Management, Inc.2,179$358.6K0.01%+2,179New
BancorpSouth Bank2,172$357.4K0.03%00.0%Unchanged
Algert Global LLC2,168$356.7K0.02%+2,168New
AE Wealth Management LLC2,167$356.6K0.00%+338+18.5%Added
Cresset Asset Management, LLC2,109$347.0K0.00%+2,109New
Two Sigma Securities, LLC2,103$346.0K0.03%+2,103New
Cambridge Investment Research Advisors, Inc.2,080$342.0K0.00%−2,107−50.3%Reduced
Dynamic Technology Lab Private Ltd2,065$340.0K0.04%+2,065New
Fox Run Management, L.L.C.2,066$340.0K0.10%+2,066New
Millrace Asset Group, Inc.1,986$327.0K0.34%−9,327−82.4%Reduced
Yorktown Management & Research Co Inc1,950$320.9K0.35%00.0%Unchanged
Echo Street Capital Management LLC1,949$320.7K0.00%+1,949New
Aviva PLC1,851$304.6K0.00%+3+0.2%Added
Ossiam1,851$304.6K0.01%+1,067+136.1%Added
CWM Advisors, LLC1,806$297.2K0.04%+79+4.6%Added
Advisor Partners II, LLC1,797$295.7K0.01%−48−2.6%Reduced
Janney Capital Management LLC1,769$291.0K0.02%−18−1.0%Reduced
Commonwealth Equity Services, LLC1,760$290.0K0.00%−185−9.5%Reduced
Centiva Capital, LP1,755$288.8K0.01%+127+7.8%Added
Twin Tree Management, LP1,721$283.2K0.01%−1,866−52.0%Reduced
Toroso Investments, LLC1,706$281.0K0.01%−8,124−82.6%Reduced
Barrett & Company, Inc.1,700$279.7K0.16%00.0%Unchanged
Captrust Financial Advisors1,654$272.2K0.00%+18+1.1%Added
M&T Bank Corp1,636$268.8K0.00%−139−7.8%Reduced
Pitcairn Co1,603$263.8K0.02%−29−1.8%Reduced
Mission Wealth Management, LP1,600$263.3K0.01%+1,600New
Mackenzie Financial Corp1,600$257.5K0.00%00.0%Unchanged
Jane Street Group, LLC1,509$248.3K0.00%−9,691−86.5%Reduced
Winton Group Ltd1,509$248.3K0.02%−1,990−56.9%Reduced