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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 2023

Institutional positions in Masimo Corp as of Mar 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
428
+31 vs. Q4 2022
Shares held
45.0M
+592.5K (+1.3%) vs. Q4 2022
Total value
$8.30B
+$1.73B (+26.4%) vs. Q4 2022
New holders
68
134 more added
Sold out
37
143 more reduced

8 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2022: 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 2023: 428 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 2023: $8.30B
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 2023

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2022.

Institutions holding MASI in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
United Community Bank1,057$195.1K0.18%00.0%Unchanged
Alberta Investment Management Corp1,100$203.0K0.00%+1,100New
Intrust Bank NA1,102$203.4K0.03%+1,102New
HBK Sorce Advisory LLC1,113$205.4K0.01%−1,117−50.1%Reduced
B. Metzler seel. Sohn & Co. AG1,121$206.9K0.00%+1,121New
Whittier Trust Co1,134$209.3K0.00%00.0%Unchanged
Accredited Investors Inc.1,149$212.0K0.02%+1,149New
Matisse Capital1,166$215.2K0.14%+1,166New
Mutual Advisors, LLC1,177$217.2K0.01%+1,177New
Synergy Financial Group, LTD1,196$220.7K0.36%+1,196New
Quadrant Capital Group LLC1,208$222.9K0.02%+150+14.2%Added
Hamilton Wealth, LLC1,234$227.7K0.08%+1,234New
Wesleyan Assurance Society1,300$240.0K0.03%00.0%Unchanged
Tokio Marine Asset Management Co Ltd1,302$240.3K0.02%+1,302New
CWM, LLC1,308$241.0K0.00%+32+2.5%Added
Cubist Systematic Strategies, LLC1,318$243.2K0.00%−18,844−93.5%Reduced
Pacer Advisors, Inc.1,374$253.6K0.00%−7,892−85.2%Reduced
CIBC Asset Management Inc1,383$255.2K0.00%+19+1.4%Added
PVG Asset Management Corp1,425$263.0K0.84%+1,425New
Raymond James Financial Services Advisors, Inc.1,432$264.3K0.00%+78+5.8%Added
Berkshire Asset Management LLC1,450$267.6K0.02%+1,450New
LRT Capital Management, LLC1,452$268.0K0.20%−7,182−83.2%Reduced
Jump Financial, LLC1,547$285.5K0.01%+1,547New
Jefferies Financial Group Inc.1,589$293.2K0.01%+1,589New
Cetera Advisors LLC1,591$293.6K0.00%+1,591New
Mackenzie Financial Corp1,600$295.3K0.00%−754−32.0%Reduced
Quantamental Technologies LLC1,612$297.5K0.16%+1,612New
Centiva Capital, LP1,628$300.4K0.02%+1,628New
Pitcairn Co1,632$301.2K0.03%−5−0.3%Reduced
Oak Thistle LLC1,635$301.7K0.18%+1,635New
Captrust Financial Advisors1,636$301.9K0.00%+53+3.3%Added
Profund Advisors LLC1,688$311.5K0.02%−472−21.9%Reduced
Barrett & Company, Inc.1,700$313.7K0.20%00.0%Unchanged
CWM Advisors, LLC1,727$318.8K0.04%+1,727New
M&T Bank Corp1,775$327.2K0.00%+1+0.1%Added
Janney Capital Management LLC1,787$330.0K0.02%+15+0.8%Added
AE Wealth Management LLC1,829$337.5K0.00%+108+6.3%Added
Advisor Partners II, LLC1,845$340.5K0.02%+39+2.2%Added
Aviva PLC1,848$341.0K0.00%−4,697−71.8%Reduced
Stifel Financial Corp1,913$353.0K0.00%−95−4.7%Reduced
Commerce Bank1,938$357.6K0.00%00.0%Unchanged
Commonwealth Equity Services, LLC1,945$359.0K0.00%−469−19.4%Reduced
Yorktown Management & Research Co Inc1,950$359.9K0.39%00.0%Unchanged
Silvercrest Asset Management Group LLC1,972$363.9K0.00%−38−1.9%Reduced
Man Group plc–$385.7K0.00%––
HighTower Advisors, LLC2,138$395.0K0.00%+72+3.5%Added
Holocene Advisors, LP2,150$396.8K0.00%−3,875−64.3%Reduced
BancorpSouth Bank2,172$400.8K0.04%00.0%Unchanged
Tower Research Capital LLC (TRC)2,180$402.0K0.01%+398+22.3%Added
Independent Advisor Alliance2,295$423.5K0.02%+2,295New
Bank of Nova Scotia2,310$426.3K0.00%−52,801−95.8%Reduced
Red Spruce Capital, LLC2,346$432.9K0.25%+83+3.7%Added
Coldstream Capital Management Inc2,382$439.6K0.01%−73−3.0%Reduced
Vestcor Inc2,444$451.0K0.02%−500−17.0%Reduced
Intech Investment Management LLC2,459$453.8K0.00%−9,426−79.3%Reduced
Shelton Capital Management2,474$456.6K0.02%00.0%Unchanged
Buckhead Capital Management LLC2,545$469.7K0.11%00.0%Unchanged
Candriam Luxembourg S.C.A.2,813$477.8K0.00%−553−16.4%Reduced
National Asset Management, Inc.2,594$478.7K0.01%+2,594New
Mitsubishi UFJ Asset Management (UK) Ltd.2,600$480.0K0.31%−1,000−27.8%Reduced
Blair William & Co2,646$488.3K0.00%+2,646New
Duality Advisers, LP2,701$498.4K0.06%+2,701New
Baird Financial Group, Inc.2,759$509.1K0.00%−84−3.0%Reduced
Edgestream Partners, L.P.2,782$513.4K0.06%−625−18.3%Reduced
Prudential PLC2,783$513.6K0.01%+3+0.1%Added
Sigma Planning Corp2,806$517.8K0.02%+4+0.1%Added
Seaport Global Advisors, LLC2,912$537.4K1.70%+1,230+73.1%Added
PAX Financial Group, LLC2,914$537.8K0.13%+2,914New
Daiwa Securities Group Inc.2,923$539.0K0.00%+100+3.5%Added
DAFNA Capital Management LLC3,000$553.6K0.17%00.0%Unchanged
ProShare Advisors LLC3,022$557.7K0.00%−688−18.5%Reduced
M&G Investment Management Ltd3,023$559.3K0.00%+1,349+80.6%Added
Steel Peak Wealth Management LLC3,051$563.0K0.04%+3,051New
Qtron Investments LLC3,059$564.5K0.12%+3,059New
Lombard Odier Asset Management (Europe) Ltd3,100$572.1K0.03%−800−20.5%Reduced
Sumitomo Mitsui DS Asset Management Company, Ltd3,113$574.5K0.01%00.0%Unchanged
Franklin Resources Inc3,282$605.7K0.00%−912−21.7%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund3,300$609.0K0.01%+3,300New
Simplex Trading, LLC3,335$615.0K0.03%+2,504+301.3%Added
Nisa Investment Advisors, LLC3,349$618.0K0.00%+3,114+1,325.1%Added
Oxford Financial Group Ltd3,430$633.0K0.07%00.0%Unchanged
Terry L. Blaker3,459$638.3K0.06%−259−7.0%Reduced
Winton Group Ltd3,499$645.7K0.04%+438+14.3%Added
MML Investors Services, LLC3,507$647.0K0.00%−603−14.7%Reduced
Nordea Investment Management AB3,627$655.4K0.00%−259−6.7%Reduced
Twin Tree Management, LP3,587$661.9K0.02%+2,387+198.9%Added
Institutional & Family Asset Management, LLC3,650$673.6K0.11%00.0%Unchanged
Verus Capital Partners, LLC3,651$673.8K0.11%00.0%Unchanged
Maryland State Retirement & Pension System3,736$689.4K0.02%00.0%Unchanged
Schonfeld Strategic Advisors LLC3,772$696.1K0.01%−318−7.8%Reduced
Pathstone Family Office, LLC3,836$697.9K0.01%−1,310−25.5%Reduced
CI Private Wealth, LLC3,861$712.5K0.00%+2,338+153.5%Added
Assenagon Asset Management S.A.3,924$724.1K0.00%−23,166−85.5%Reduced
Westpac Banking Corp3,952$729.3K0.01%00.0%Unchanged
Arkadios Wealth Advisors3,965$731.7K0.09%+832+26.6%Added
Macquarie Group Ltd4,126$761.4K0.00%00.0%Unchanged
Prudential Financial Inc4,166$768.8K0.00%+1,155+38.4%Added
Crossmark Global Holdings, Inc.4,171$770.0K0.02%+166+4.1%Added
Cambridge Investment Research Advisors, Inc.4,187$773.0K0.00%+978+30.5%Added
Inspire Advisors, LLC4,304$794.2K0.18%+4,304New