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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, Q4 2023

Institutional positions in Masimo Corp as of Dec 31, 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
342
−10 vs. Q3 2023
Shares held
50.4M
+3.05M (+6.5%) vs. Q3 2023
Total value
$5.91B
+$1.75B (+42.3%) vs. Q3 2023
New holders
63
111 more added
Sold out
73
121 more reduced

5 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2023: 342 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 heldQ4 2023: $5.91B
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, Q4 2023

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2023.

Institutions holding MASI in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
North Star Asset Management Inc4,193$491.5K0.03%−220−5.0%Reduced
HSBC Holdings PLC4,132$484.3K0.00%−6,816−62.3%Reduced
Commerce Bank4,085$478.8K0.00%+1,539+60.4%Added
Guggenheim Capital LLC4,070$477.0K0.00%−200−4.7%Reduced
Verus Capital Partners, LLC4,051$474.8K0.06%+400+11.0%Added
CI Private Wealth, LLC4,037$473.2K0.00%+1,611+66.4%Added
SG Americas Securities, LLC4,009$470.0K0.01%−8,705−68.5%Reduced
Franklin Resources Inc3,960$464.2K0.00%+768+24.1%Added
The PNC Financial Services Group, Inc.3,845$450.7K0.00%+63+1.7%Added
Vontobel Holding Ltd.3,838$449.9K0.00%−1,980−34.0%Reduced
Securian Asset Management, Inc3,757$440.4K0.01%00.0%Unchanged
Maryland State Retirement & Pension System3,736$437.9K0.01%00.0%Unchanged
Tower Research Capital LLC (TRC)3,707$434.5K0.01%−2,654−41.7%Reduced
Institutional & Family Asset Management, LLC3,650$427.8K0.07%00.0%Unchanged
Two Sigma Advisers, LP3,500$410.2K0.00%−19,200−84.6%Reduced
Oxford Financial Group Ltd3,430$402.0K0.03%00.0%Unchanged
Crossmark Global Holdings, Inc.3,303$388.0K0.01%−211−6.0%Reduced
Axq Capital, LP3,300$386.8K0.10%−5,300−61.6%Reduced
Algert Global LLC3,270$383.3K0.02%+3,270New
Mariner, LLC3,252$381.2K0.00%+3,252New
Handelsinvest Investeringsforvaltning3,239$380.0K0.16%+3,239New
First Trust Advisors LP3,191$374.0K0.00%−101,653−97.0%Reduced
KBC Group NV3,090$362.0K0.00%−7,312−70.3%Reduced
HighTower Advisors, LLC3,072$359.0K0.00%−187−5.7%Reduced
M&G Investment Management Ltd3,061$358.1K0.00%−106−3.3%Reduced
DAFNA Capital Management LLC3,000$351.6K0.08%00.0%Unchanged
NEOS Investment Management LLC2,989$350.3K0.03%+2,989New
Silvercrest Asset Management Group LLC2,982$349.5K0.00%+101+3.5%Added
MML Investors Services, LLC2,869$336.0K0.00%−105−3.5%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC2,805$328.8K0.02%+61+2.2%Added
Wealth Enhancement Advisory Services, LLC2,787$326.7K0.00%+2,787New
Buckhead Capital Management LLC2,650$310.6K0.12%−150−5.4%Reduced
Prudential Financial Inc2,631$308.4K0.00%+90+3.5%Added
Sigma Planning Corp2,569$301.1K0.02%−336−11.6%Reduced
KCM Investment Advisors LLC2,425$284.2K0.01%+10+0.4%Added
Teacher Retirement System of Texas2,422$284.0K0.00%−1,035−29.9%Reduced
Bessemer Group Inc2,407$282.0K0.00%−150−5.9%Reduced
M&T Bank Corp2,378$278.6K0.00%+2,378New
ProShare Advisors LLC2,336$273.8K0.00%−60−2.5%Reduced
AE Wealth Management LLC2,141$272.5K0.00%+2,141New
Edgestream Partners, L.P.2,297$269.2K0.02%+2,297New
Coldstream Capital Management Inc2,292$268.6K0.01%+2,292New
Mission Wealth Management, LP2,280$267.2K0.01%+2,280New
BancorpSouth Bank2,172$254.6K0.02%+2,172New
180 Wealth Advisors, LLC2,214$253.7K0.05%+2,214New
Independent Advisor Alliance2,036$238.6K0.01%+2,036New
Shelton Capital Management1,942$227.6K0.01%−442−18.5%Reduced
Toroso Investments, LLC1,910$223.9K0.01%+1,910New
Pitcairn Co1,867$218.8K0.02%+1,867New
Aviva PLC1,714$200.9K0.00%+1,714New
Russell Investments Group, Ltd.1,390$162.9K0.00%−1,684−54.8%Reduced
Quadrant Capital Group LLC1,389$162.8K0.01%+691+99.0%Added
CWM, LLC1,318$154.0K0.00%+157+13.5%Added
Wesleyan Assurance Society1,300$152.0K0.02%00.0%Unchanged
Whittier Trust Co1,134$132.9K0.00%00.0%Unchanged
Barrett & Company, Inc.1,133$132.8K0.07%−567−33.4%Reduced
United Community Bank1,052$123.3K0.05%00.0%Unchanged
Harbor Investment Advisory, LLC970$113.7K0.01%00.0%Unchanged
Advisory Services Network, LLC857$100.4K0.00%+857New
Assetmark, Inc827$96.9K0.00%−174−17.4%Reduced
Ci Investments Inc.761$89.0K0.00%−133−14.9%Reduced
Wahed Invest LLC734$86.0K0.02%+47+6.8%Added
Qube Research & Technologies Ltd684$80.2K0.00%−30,699−97.8%Reduced
VitalStone Financial, LLC597$70.0K0.06%00.0%Unchanged
Fifth Third Bancorp590$69.2K0.00%+350+145.8%Added
Harvest Fund Management Co., Ltd538$62.0K0.01%+520+2,888.9%Added
HHM Wealth Advisors, LLC500$58.6K0.01%00.0%Unchanged
Parallel Advisors, LLC445$52.2K0.00%+145+48.3%Added
Clearstead Advisors, LLC430$50.4K0.00%+5+1.2%Added
Leonteq Securities AG414$48.5K0.01%−10,895−96.3%Reduced
Signaturefd, LLC401$47.0K0.00%−23−5.4%Reduced
DHJJ Financial Advisors, Ltd.360$42.2K0.02%00.0%Unchanged
Harel Insurance Investments & Financial Services Ltd.307$36.0K0.00%+307New
EverSource Wealth Advisors, LLC295$34.6K0.00%+264+851.6%Added
Lindbrook Capital, LLC289$33.9K0.00%+6+2.1%Added
NBC Securities, Inc.255$29.0K0.00%−140−35.4%Reduced
Massmutual Trust Co FSB243$28.5K0.00%+142+140.6%Added
Byrne Asset Management LLC240$27.6K0.02%+240New
Provence Wealth Management Group225$26.4K0.01%−27−10.7%Reduced
Harbour Investments, Inc.219$25.7K0.00%+21+10.6%Added
Covestor Ltd195$23.0K0.02%+143+275.0%Added
Spire Wealth Management161$20.1K0.00%+4+2.5%Added
Quarry LP156$18.3K0.01%+156New
GWM Advisors LLC156$18.2K0.00%+100+178.6%Added
Northwestern Mutual Wealth Management Co150$17.6K0.00%−50−25.0%Reduced
Allworth Financial LP128$15.0K0.00%−97−43.1%Reduced
BI Asset Management Fondsmaeglerselskab A/S119$14.0K0.00%00.0%Unchanged
LGT Financial Advisors LLC114$13.4K0.02%00.0%Unchanged
Nomura Asset Management Co Ltd110$12.9K0.00%00.0%Unchanged
Center for Financial Planning, Inc.100$11.7K0.00%00.0%Unchanged
Huntington National Bank86$10.1K0.00%+84+4,200.0%Added
Farmers & Merchants Trust Co of Chambersburg PA89$10.0K0.01%+89New
Glassman Wealth Services82$9.61K0.00%+71+645.5%Added
First Horizon Advisors, Inc.81$9.49K0.00%+32+65.3%Added
Central Trust Co79$9.26K0.00%00.0%Unchanged
Smithfield Trust Co65$8.00K0.00%00.0%Unchanged
Farther Finance Advisors, LLC68$7.97K0.00%+56+466.7%Added
GAMMA Investing LLC54$6.96K0.00%+54New
ADAR1 Capital Management, LLC58$6.80K0.00%+58New
Sunbelt Securities, Inc.54$6.33K0.00%00.0%Unchanged