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, Q3 2024
Institutional positions in Masimo Corp as of Sep 30, 2024. 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
- 362
- +13 vs. Q2 2024
- Shares held
- 50.4M
- +10.3M (+25.6%) vs. Q2 2024
- Total value
- $6.72B
- +$1.66B (+32.8%) vs. Q2 2024
- New holders
- 61
- 110 more added
- Sold out
- 48
- 122 more reduced
3 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 2 | $16.2K |
| Q1 2026 | 451 | $9.69B |
| Q4 2025 | 392 | $7.20B |
| Q3 2025 | 358 | $8.29B |
| Q2 2025 | 379 | $9.68B |
| Q1 2025 | 393 | $9.02B |
| Q4 2024 | 366 | $8.50B |
| Q3 2024 | 362 | $6.72B |
| Q2 2024 | 352 | $6.24B |
| Q1 2024 | 339 | $7.59B |
| Q4 2023 | 342 | $5.91B |
| Q3 2023 | 357 | $4.18B |
| Q2 2023 | 415 | $7.56B |
| Q1 2023 | 428 | $8.30B |
| Q4 2022 | 405 | $6.58B |
| Q3 2022 | 418 | $6.54B |
| Q2 2022 | 417 | $5.81B |
| Q1 2022 | 457 | $6.61B |
| Q4 2021 | 520 | $13.6B |
| Q3 2021 | 475 | $12.5B |
| Q2 2021 | 459 | $11.1B |
| Q1 2021 | 481 | $10.3B |
Institutions, Q3 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Campbell & CO Investment Adviser LLC | 8,959 | $1.19M | 0.09% | −19,791−68.8% | Reduced |
| Oregon Public Employees Retirement Fund | 8,966 | $1.20M | 0.02% | −300−3.2% | Reduced |
| Bank of Montreal | 9,064 | $1.21M | 0.00% | +3,335+58.2% | Added |
| Ameritas Investment Partners, Inc. | 9,059 | $1.21M | 0.04% | −426−4.5% | Reduced |
| ClariVest Asset Management LLC | 9,609 | $1.21M | 0.12% | 00.0% | Unchanged |
| Victory Capital Management Inc | 9,240 | $1.23M | 0.00% | −576−5.9% | Reduced |
| Woodline Partners LP | 9,300 | $1.24M | 0.01% | −176,690−95.0% | Reduced |
| Illinois Municipal Retirement Fund | 9,309 | $1.24M | 0.02% | 00.0% | Unchanged |
| Intech Investment Management LLC | 9,444 | $1.26M | 0.01% | −834−8.1% | Reduced |
| Versor Investments LP | 9,591 | $1.28M | 0.20% | +4,313+81.7% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 9,733 | $1.30M | 0.01% | −151−1.5% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 9,796 | $1.31M | 0.03% | −156−1.6% | Reduced |
| New Mexico Educational Retirement Board | 9,900 | $1.32M | 0.04% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 9,980 | $1.33M | 0.03% | −1,094−9.9% | Reduced |
| Shay Capital LLC | 10,150 | $1.35M | 0.40% | +10,150 | New |
| Thrivent Financial for Lutherans | 10,373 | $1.38M | 0.00% | −1,206,984−99.1% | Reduced |
| Edgestream Partners, L.P. | 10,449 | $1.39M | 0.06% | +5,325+103.9% | Added |
| State of Michigan Retirement System | 10,496 | $1.40M | 0.01% | −200−1.9% | Reduced |
| Teza Capital Management LLC | 10,919 | $1.46M | 0.16% | +1,140+11.7% | Added |
| Axq Capital, LP | 11,133 | $1.48M | 0.45% | +11,133 | New |
| American Century Companies Inc | 11,285 | $1.50M | 0.00% | +614+5.8% | Added |
| Paradigm Capital Management Inc | 11,353 | $1.51M | 0.07% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 12,200 | $1.63M | 0.03% | −400−3.2% | Reduced |
| Simplex Trading, LLC | 12,529 | $1.67M | 0.06% | +6,169+97.0% | Added |
| Exchange Traded Concepts, LLC | 12,550 | $1.67M | 0.04% | +1,862+17.4% | Added |
| STRS Ohio | 12,788 | $1.71M | 0.01% | +12,788 | New |
| Arizona State Retirement System | 13,017 | $1.74M | 0.01% | +426+3.4% | Added |
| Voya Investment Management LLC | 13,058 | $1.74M | 0.00% | −891−6.4% | Reduced |
| Handelsbanken Fonder AB | 13,230 | $1.76M | 0.01% | +2,000+17.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 13,285 | $1.77M | 0.00% | −1,339−9.2% | Reduced |
| Royal Bank of Canada | 13,485 | $1.80M | 0.00% | −13,356−49.8% | Reduced |
| Lockerman Financial Group, Inc. | 13,600 | $1.81M | 3.07% | −800−5.6% | Reduced |
| Empower Advisory Group, LLC | 14,066 | $1.88M | 0.01% | +60.0% | Added |
| Ensign Peak Advisors, Inc | 14,161 | $1.89M | 0.00% | 00.0% | Unchanged |
| Advisors Asset Management, Inc. | 14,216 | $1.90M | 0.03% | +501+3.7% | Added |
| Natixis | 14,386 | $1.92M | 0.01% | −91,430−86.4% | Reduced |
| Picton Mahoney Asset Management | 14,457 | $1.93M | 0.07% | −9,593−39.9% | Reduced |
| Gluskin Sheff & Assoc Inc | 14,425 | $1.93M | 0.23% | +14,425 | New |
| NEOS Investment Management LLC | 14,610 | $1.95M | 0.06% | +1,121+8.3% | Added |
| Creative Planning | 14,700 | $1.96M | 0.00% | −916−5.9% | Reduced |
| Birchview Capital, LP | 15,280 | $2.04M | 1.76% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 15,451 | $2.06M | 0.02% | −390−2.5% | Reduced |
| Brevan Howard Capital Management LP | 15,456 | $2.06M | 0.10% | +11,407+281.7% | Added |
| State of Tennessee, Treasury Department | 15,731 | $2.10M | 0.01% | −3,719−19.1% | Reduced |
| Public Employees Retirement System of Ohio | 15,976 | $2.13M | 0.01% | −770−4.6% | Reduced |
| AQR Capital Management LLC | 16,216 | $2.16M | 0.00% | +16,216 | New |
| State of New Jersey Common Pension Fund D | 16,736 | $2.23M | 0.01% | +194+1.2% | Added |
| Yousif Capital Management, LLC | 16,737 | $2.23M | 0.02% | −2,441−12.7% | Reduced |
| XTX Topco Ltd | 17,157 | $2.29M | 0.17% | +17,157 | New |
| Teacher Retirement System of Texas | 17,435 | $2.33M | 0.01% | +13,784+377.5% | Added |
| Brown Advisory Inc | 17,451 | $2.33M | 0.00% | −120−0.7% | Reduced |
| Storebrand Asset Management AS | 17,732 | $2.36M | 0.01% | −10,286−36.7% | Reduced |
| Cardinal Capital Management | 18,517 | $2.47M | 0.38% | +3,077+19.9% | Added |
| Treasurer of the State of North Carolina | 18,715 | $2.50M | 0.01% | +80+0.4% | Added |
| Abn Amro Investment Solutions | 19,037 | $2.54M | 0.04% | −402−2.1% | Reduced |
| Nordea Investment Management AB | 19,040 | $2.54M | 0.00% | +19,040 | New |
| Algert Global LLC | 19,139 | $2.55M | 0.07% | +5,260+37.9% | Added |
| BNP Paribas Arbitrage, SA | 19,982 | $2.66M | 0.00% | +8,662+76.5% | Added |
| Assenagon Asset Management S.A. | 21,263 | $2.83M | 0.01% | −29,477−58.1% | Reduced |
| Amalgamated Bank | 21,313 | $2.84M | 0.02% | −1,453−6.4% | Reduced |
| Janus Henderson Group PLC | 21,800 | $2.91M | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 23,812 | $3.17M | 0.02% | −670−2.7% | Reduced |
| Mutual of America Capital Management LLC | 23,865 | $3.18M | 0.03% | −1,667−6.5% | Reduced |
| D. E. Shaw & Co., Inc. | 24,358 | $3.25M | 0.00% | +24,358 | New |
| Jane Street Group, LLC | 24,680 | $3.29M | 0.01% | −4,923−16.6% | Reduced |
| Troluce Capital Advisors LLC | 25,000 | $3.33M | 0.60% | +25,000 | New |
| State of Wisconsin Investment Board | 25,141 | $3.35M | 0.01% | +6,684+36.2% | Added |
| Amundi | 24,035 | $3.36M | 0.00% | +24,035 | New |
| Westmount Partners, LLC | 25,991 | $3.47M | 1.04% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 26,163 | $3.49M | 0.00% | −11,579−30.7% | Reduced |
| Envestnet Asset Management Inc | 26,528 | $3.54M | 0.00% | +4,225+18.9% | Added |
| Zacks Investment Management | 26,558 | $3.54M | 0.03% | −296−1.1% | Reduced |
| SEI Investments Co | 28,082 | $3.74M | 0.00% | +4,488+19.0% | Added |
| SG Americas Securities, LLC | 28,967 | $3.86M | 0.01% | +28,967 | New |
| Millennium Management LLC | 29,253 | $3.90M | 0.00% | −724,490−96.1% | Reduced |
| South Dakota Investment Council | 30,611 | $4.08M | 0.08% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 30,900 | $4.12M | 0.01% | +30,900 | New |
| Gabelli Funds LLC | 33,000 | $4.40M | 0.03% | 00.0% | Unchanged |
| Susquehanna Portfolio Strategies, LLC | 33,995 | $4.53M | 0.31% | −37,794−52.6% | Reduced |
| Roubaix Capital, LLC | 34,041 | $4.54M | 2.50% | +9,202+37.0% | Added |
| Bank of Nova Scotia | 35,438 | $4.72M | 0.01% | +35,438 | New |
| Manufacturers Life Insurance Company, The | 36,526 | $4.87M | 0.00% | −1,209−3.2% | Reduced |
| Great West Life Assurance Co | 37,560 | $5.01M | 0.01% | +10,146+37.0% | Added |
| PEAK6 Investments LLC | 39,515 | $5.27M | 0.26% | +7,173+22.2% | Added |
| Barclays PLC | 39,957 | $5.33M | 0.00% | +24,137+152.6% | Added |
| Sterling Capital Management LLC | 40,939 | $5.46M | 0.07% | +40,939 | New |
| California State Teachers Retirement System | 42,612 | $5.68M | 0.01% | −1,149−2.6% | Reduced |
| State Board of Administration of Florida Retirement System | 42,901 | $5.72M | 0.01% | 00.0% | Unchanged |
| NS Partners Ltd | 43,037 | $5.74M | 0.24% | +986+2.3% | Added |
| Walleye Capital LLC | 44,875 | $5.98M | 0.06% | +44,133+5,947.8% | Added |
| New York State Teachers Retirement System | 45,448 | $6.06M | 0.01% | −3,600−7.3% | Reduced |
| TD Asset Management Inc | 46,308 | $6.17M | 0.01% | +12,444+36.7% | Added |
| Nomura Holdings Inc | 47,584 | $6.34M | 0.05% | +47,584 | New |
| HRT Financial LP | 48,009 | $6.40M | 0.03% | +24,644+105.5% | Added |
| Bryn Mawr Trust Co | 49,064 | $6.54M | 0.12% | −225−0.5% | Reduced |
| Logan Capital Management Inc | 50,352 | $6.71M | 0.28% | −693−1.4% | Reduced |
| Wells Fargo & Company | 51,598 | $6.88M | 0.00% | +1,650+3.3% | Added |
| Corebridge Financial, Inc. | 52,466 | $7.00M | 0.04% | −4,195−7.4% | Reduced |
| Squarepoint Ops LLC | 53,226 | $7.10M | 0.02% | +43,540+449.5% | Added |
| Capital Fund Management S.A. | 53,726 | $7.16M | 0.08% | +30,187+128.2% | Added |