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 2025
Institutional positions in Masimo Corp as of Mar 31, 2025. 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
- 393
- +31 vs. Q4 2024
- Shares held
- 54.2M
- +2.83M (+5.5%) vs. Q4 2024
- Total value
- $9.02B
- +$532.2M (+6.3%) vs. Q4 2024
- New holders
- 77
- 136 more added
- Sold out
- 46
- 118 more reduced
4 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Redmile Group, LLC | 26,062 | $4.34M | 0.41% | +26,062 | New |
| Westmount Partners, LLC | 25,991 | $4.33M | 1.32% | 00.0% | Unchanged |
| MetLife Investment Management | 25,640 | $4.27M | 0.02% | −386−1.5% | Reduced |
| Nordea Investment Management AB | 26,209 | $4.22M | 0.00% | +7,027+36.6% | Added |
| Two Sigma Investments, LP | 25,165 | $4.19M | 0.01% | −14,724−36.9% | Reduced |
| South Dakota Investment Council | 24,768 | $4.13M | 0.08% | −5,843−19.1% | Reduced |
| New York State Common Retirement Fund | 24,160 | $4.03M | 0.01% | −30.0% | Reduced |
| Calamos Advisors LLC | 23,449 | $3.91M | 0.02% | +7,169+44.0% | Added |
| EAM Investors, LLC | 22,952 | $3.82M | 0.66% | +22,952 | New |
| Mutual of America Capital Management LLC | 22,871 | $3.81M | 0.04% | −603−2.6% | Reduced |
| Amalgamated Bank | 20,662 | $3.44M | 0.03% | −642−3.0% | Reduced |
| Sterling Capital Management LLC | 20,606 | $3.43M | 0.05% | −5,615−21.4% | Reduced |
| Cardinal Capital Management | 19,868 | $3.31M | 0.51% | +1,148+6.1% | Added |
| Treasurer of the State of North Carolina | 19,855 | $3.31M | 0.01% | +770+4.0% | Added |
| Janus Henderson Group PLC | 20,000 | $3.27M | 0.00% | −1,000−4.8% | Reduced |
| Wells Fargo & Company | 18,517 | $3.08M | 0.00% | −1,226−6.2% | Reduced |
| State of Tennessee, Treasury Department | 18,170 | $3.03M | 0.01% | +2,870+18.8% | Added |
| Storebrand Asset Management AS | 17,732 | $2.95M | 0.01% | 00.0% | Unchanged |
| Gluskin Sheff & Assoc Inc | 17,455 | $2.91M | 0.37% | −19,606−52.9% | Reduced |
| Aquatic Capital Management LLC | 17,388 | $2.90M | 0.07% | +17,388 | New |
| Squarepoint Ops LLC | 16,668 | $2.78M | 0.01% | +16,668 | New |
| State of Wisconsin Investment Board | 16,534 | $2.75M | 0.01% | −404−2.4% | Reduced |
| Brevan Howard Capital Management LP | 16,019 | $2.67M | 0.07% | +16,019 | New |
| State of New Jersey Common Pension Fund D | 15,867 | $2.64M | 0.01% | −869−5.2% | Reduced |
| Canada Pension Plan Investment Board | 15,800 | $2.63M | 0.00% | −300−1.9% | Reduced |
| Yousif Capital Management, LLC | 15,786 | $2.63M | 0.03% | −369−2.3% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 15,728 | $2.62M | 0.03% | +155+1.0% | Added |
| Brown Advisory Inc | 15,488 | $2.58M | 0.00% | −33−0.2% | Reduced |
| Ensign Peak Advisors, Inc | 15,133 | $2.52M | 0.00% | +257+1.7% | Added |
| Renaissance Technologies LLC | 15,000 | $2.50M | 0.00% | +15,000 | New |
| Teachers Retirement System of the State of Kentucky | 14,771 | $2.46M | 0.02% | 00.0% | Unchanged |
| Empower Advisory Group, LLC | 14,060 | $2.34M | 0.01% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 13,734 | $2.29M | 0.01% | −1,550−10.1% | Reduced |
| Aster Capital Management (DIFC) Ltd | 11,912 | $2.25M | 0.42% | +11,912 | New |
| Teacher Retirement System of Texas | 13,263 | $2.21M | 0.01% | −3,671−21.7% | Reduced |
| Lockerman Financial Group, Inc. | 13,100 | $2.18M | 3.30% | −500−3.7% | Reduced |
| Arizona State Retirement System | 13,028 | $2.17M | 0.01% | −155−1.2% | Reduced |
| Handelsbanken Fonder AB | 12,930 | $2.15M | 0.01% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 12,400 | $2.07M | 0.04% | +100+0.8% | Added |
| Franklin Resources Inc | 12,286 | $2.05M | 0.00% | +9,361+320.0% | Added |
| Voya Investment Management LLC | 12,274 | $2.04M | 0.00% | −285−2.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 11,371 | $1.89M | 0.00% | +66+0.6% | Added |
| Paradigm Capital Management Inc | 11,353 | $1.89M | 0.11% | 00.0% | Unchanged |
| Birchview Capital, LP | 11,280 | $1.88M | 1.63% | −4,000−26.2% | Reduced |
| Bryn Mawr Trust Co | 11,240 | $1.87M | 0.03% | −2,477−18.1% | Reduced |
| Creative Planning | 11,218 | $1.87M | 0.00% | −2,979−21.0% | Reduced |
| Marshall Wace, LLP | 10,974 | $1.83M | 0.00% | −2,315−17.4% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 10,623 | $1.77M | 0.01% | +808+8.2% | Added |
| State of Michigan Retirement System | 10,596 | $1.77M | 0.01% | +100+1.0% | Added |
| Thrivent Financial for Lutherans | 10,419 | $1.74M | 0.00% | −37−0.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 10,270 | $1.71M | 0.01% | +6,290+158.0% | Added |
| Neo Ivy Capital Management | 10,248 | $1.71M | 0.54% | +10,248 | New |
| Virginia Retirement Systems Et Al | 10,197 | $1.70M | 0.01% | +10,197 | New |
| New Mexico Educational Retirement Board | 9,900 | $1.65M | 0.06% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 9,881 | $1.65M | 0.03% | +5+0.1% | Added |
| TownSquare Capital, LLC | 9,870 | $1.64M | 0.02% | +1,744+21.5% | Added |
| Illinois Municipal Retirement Fund | 9,309 | $1.55M | 0.02% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 9,019 | $1.50M | 0.03% | −60−0.7% | Reduced |
| KLP Kapitalforvaltning AS | 8,900 | $1.48M | 0.01% | −500−5.3% | Reduced |
| Fred Alger Management, LLC | 8,772 | $1.46M | 0.01% | −11,658−57.1% | Reduced |
| Ameritas Investment Partners, Inc. | 8,744 | $1.46M | 0.05% | −157−1.8% | Reduced |
| Fieldview Capital Management, LLC | 8,675 | $1.45M | 0.20% | +8,675 | New |
| De Burlo Group Inc | 8,402 | $1.40M | 0.21% | −150−1.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,195 | $1.37M | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Asset Management (UK) Ltd. | 8,000 | $1.33M | 0.72% | +8,000 | New |
| AQR Capital Management LLC | 8,142 | $1.30M | 0.00% | +4,700+136.5% | Added |
| Engineers Gate Manager LP | 7,754 | $1.29M | 0.02% | +7,754 | New |
| Centiva Capital, LP | 7,530 | $1.25M | 0.07% | +7,530 | New |
| Algert Global LLC | 7,310 | $1.22M | 0.03% | +7,310 | New |
| Xponance, Inc. | 7,101 | $1.18M | 0.01% | +76+1.1% | Added |
| Versor Investments LP | 6,978 | $1.16M | 0.19% | +6,978 | New |
| Pictet Asset Management Holding SA | 6,791 | $1.13M | 0.00% | +399+6.2% | Added |
| RFG Advisory, LLC | 6,780 | $1.13M | 0.03% | +2,875+73.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 6,405 | $1.07M | 0.00% | +6,405 | New |
| Sigma Planning Corp | 6,365 | $1.06M | 0.03% | +3,000+89.2% | Added |
| Guggenheim Capital LLC | 6,356 | $1.06M | 0.01% | −665−9.5% | Reduced |
| Deutsche Bank AG | 6,309 | $1.05M | 0.00% | +92+1.5% | Added |
| Bank of Montreal | 6,128 | $1.02M | 0.00% | +17+0.3% | Added |
| Polar Capital Holdings Plc | 6,023 | $1.00M | 0.01% | 00.0% | Unchanged |
| Bayesian Capital Management, LP | 6,000 | $999.6K | 0.17% | +6,000 | New |
| JustInvest LLC | 5,715 | $952.1K | 0.01% | +23+0.4% | Added |
| The PNC Financial Services Group, Inc. | 5,684 | $947.0K | 0.00% | +999+21.3% | Added |
| Prelude Capital Management, LLC | 5,659 | $942.8K | 0.10% | +5,659 | New |
| Pathstone Holdings, LLC | 5,495 | $915.5K | 0.00% | −25−0.5% | Reduced |
| Susquehanna International Group, LLP | 5,426 | $904.0K | 0.00% | +5,426 | New |
| EntryPoint Capital, LLC | 5,368 | $894.3K | 0.41% | +5,368 | New |
| B.O.S.S. Retirement Advisors, LLC | 5,332 | $888.3K | 0.26% | 00.0% | Unchanged |
| Legato Capital Management LLC | 5,245 | $873.8K | 0.12% | +5,245 | New |
| State of Alaska, Department of Revenue | 5,204 | $866.0K | 0.01% | +135+2.7% | Added |
| Eukles Asset Management | 5,116 | $852.3K | 0.37% | −554−9.8% | Reduced |
| LPL Financial LLC | 5,056 | $842.3K | 0.00% | +746+17.3% | Added |
| Commerce Bank | 5,024 | $837.0K | 0.01% | +124+2.5% | Added |
| Landscape Capital Management, L.L.C. | 4,998 | $832.7K | 0.07% | −588−10.5% | Reduced |
| CAPROCK Group, Inc. | 4,913 | $818.5K | 0.02% | +4,913 | New |
| Point72 Hong Kong Ltd | 4,852 | $808.4K | 0.06% | +4,852 | New |
| Public Employees Retirement Association of Colorado | 4,841 | $807.0K | 0.00% | 00.0% | Unchanged |
| Brinker Capital Investments, LLC | 4,767 | $794.2K | 0.01% | −11−0.2% | Reduced |
| Orion Portfolio Solutions, LLC | 4,767 | $794.2K | 0.01% | −11−0.2% | Reduced |
| HighTower Advisors, LLC | 4,550 | $758.0K | 0.00% | −2,263−33.2% | Reduced |
| NEOS Investment Management LLC | 4,543 | $756.9K | 0.01% | −5,037−52.6% | Reduced |