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 |
|---|---|---|---|---|---|
| Commerce Bank | 5,024 | $837.0K | 0.01% | +124+2.5% | Added |
| LPL Financial LLC | 5,056 | $842.3K | 0.00% | +746+17.3% | Added |
| Eukles Asset Management | 5,116 | $852.3K | 0.37% | −554−9.8% | Reduced |
| State of Alaska, Department of Revenue | 5,204 | $866.0K | 0.01% | +135+2.7% | Added |
| Legato Capital Management LLC | 5,245 | $873.8K | 0.12% | +5,245 | New |
| B.O.S.S. Retirement Advisors, LLC | 5,332 | $888.3K | 0.26% | 00.0% | Unchanged |
| EntryPoint Capital, LLC | 5,368 | $894.3K | 0.41% | +5,368 | New |
| Susquehanna International Group, LLP | 5,426 | $904.0K | 0.00% | +5,426 | New |
| Pathstone Holdings, LLC | 5,495 | $915.5K | 0.00% | −25−0.5% | Reduced |
| Prelude Capital Management, LLC | 5,659 | $942.8K | 0.10% | +5,659 | New |
| The PNC Financial Services Group, Inc. | 5,684 | $947.0K | 0.00% | +999+21.3% | Added |
| JustInvest LLC | 5,715 | $952.1K | 0.01% | +23+0.4% | Added |
| Bayesian Capital Management, LP | 6,000 | $999.6K | 0.17% | +6,000 | New |
| Polar Capital Holdings Plc | 6,023 | $1.00M | 0.01% | 00.0% | Unchanged |
| Bank of Montreal | 6,128 | $1.02M | 0.00% | +17+0.3% | Added |
| Deutsche Bank AG | 6,309 | $1.05M | 0.00% | +92+1.5% | Added |
| Guggenheim Capital LLC | 6,356 | $1.06M | 0.01% | −665−9.5% | Reduced |
| Sigma Planning Corp | 6,365 | $1.06M | 0.03% | +3,000+89.2% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 6,405 | $1.07M | 0.00% | +6,405 | New |
| RFG Advisory, LLC | 6,780 | $1.13M | 0.03% | +2,875+73.6% | Added |
| Pictet Asset Management Holding SA | 6,791 | $1.13M | 0.00% | +399+6.2% | Added |
| Versor Investments LP | 6,978 | $1.16M | 0.19% | +6,978 | New |
| Xponance, Inc. | 7,101 | $1.18M | 0.01% | +76+1.1% | Added |
| Algert Global LLC | 7,310 | $1.22M | 0.03% | +7,310 | New |
| Centiva Capital, LP | 7,530 | $1.25M | 0.07% | +7,530 | New |
| Engineers Gate Manager LP | 7,754 | $1.29M | 0.02% | +7,754 | New |
| AQR Capital Management LLC | 8,142 | $1.30M | 0.00% | +4,700+136.5% | Added |
| Mitsubishi UFJ Asset Management (UK) Ltd. | 8,000 | $1.33M | 0.72% | +8,000 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,195 | $1.37M | 0.00% | 00.0% | Unchanged |
| De Burlo Group Inc | 8,402 | $1.40M | 0.21% | −150−1.8% | Reduced |
| Fieldview Capital Management, LLC | 8,675 | $1.45M | 0.20% | +8,675 | New |
| Ameritas Investment Partners, Inc. | 8,744 | $1.46M | 0.05% | −157−1.8% | Reduced |
| Fred Alger Management, LLC | 8,772 | $1.46M | 0.01% | −11,658−57.1% | Reduced |
| KLP Kapitalforvaltning AS | 8,900 | $1.48M | 0.01% | −500−5.3% | Reduced |
| Oregon Public Employees Retirement Fund | 9,019 | $1.50M | 0.03% | −60−0.7% | Reduced |
| Illinois Municipal Retirement Fund | 9,309 | $1.55M | 0.02% | 00.0% | Unchanged |
| TownSquare Capital, LLC | 9,870 | $1.64M | 0.02% | +1,744+21.5% | Added |
| Northwestern Mutual Investment Management Company, LLC | 9,881 | $1.65M | 0.03% | +5+0.1% | Added |
| New Mexico Educational Retirement Board | 9,900 | $1.65M | 0.06% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 10,197 | $1.70M | 0.01% | +10,197 | New |
| Neo Ivy Capital Management | 10,248 | $1.71M | 0.54% | +10,248 | New |
| Schonfeld Strategic Advisors LLC | 10,270 | $1.71M | 0.01% | +6,290+158.0% | Added |
| Thrivent Financial for Lutherans | 10,419 | $1.74M | 0.00% | −37−0.4% | Reduced |
| State of Michigan Retirement System | 10,596 | $1.77M | 0.01% | +100+1.0% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 10,623 | $1.77M | 0.01% | +808+8.2% | Added |
| Marshall Wace, LLP | 10,974 | $1.83M | 0.00% | −2,315−17.4% | Reduced |
| Creative Planning | 11,218 | $1.87M | 0.00% | −2,979−21.0% | Reduced |
| Bryn Mawr Trust Co | 11,240 | $1.87M | 0.03% | −2,477−18.1% | Reduced |
| Birchview Capital, LP | 11,280 | $1.88M | 1.63% | −4,000−26.2% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.89M | 0.11% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 11,371 | $1.89M | 0.00% | +66+0.6% | Added |
| Voya Investment Management LLC | 12,274 | $2.04M | 0.00% | −285−2.3% | Reduced |
| Franklin Resources Inc | 12,286 | $2.05M | 0.00% | +9,361+320.0% | Added |
| Louisiana State Employees Retirement System | 12,400 | $2.07M | 0.04% | +100+0.8% | Added |
| Handelsbanken Fonder AB | 12,930 | $2.15M | 0.01% | 00.0% | Unchanged |
| Arizona State Retirement System | 13,028 | $2.17M | 0.01% | −155−1.2% | Reduced |
| Lockerman Financial Group, Inc. | 13,100 | $2.18M | 3.30% | −500−3.7% | Reduced |
| Teacher Retirement System of Texas | 13,263 | $2.21M | 0.01% | −3,671−21.7% | Reduced |
| Aster Capital Management (DIFC) Ltd | 11,912 | $2.25M | 0.42% | +11,912 | New |
| Public Employees Retirement System of Ohio | 13,734 | $2.29M | 0.01% | −1,550−10.1% | Reduced |
| Empower Advisory Group, LLC | 14,060 | $2.34M | 0.01% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 14,771 | $2.46M | 0.02% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 15,000 | $2.50M | 0.00% | +15,000 | New |
| Ensign Peak Advisors, Inc | 15,133 | $2.52M | 0.00% | +257+1.7% | Added |
| Brown Advisory Inc | 15,488 | $2.58M | 0.00% | −33−0.2% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 15,728 | $2.62M | 0.03% | +155+1.0% | Added |
| Yousif Capital Management, LLC | 15,786 | $2.63M | 0.03% | −369−2.3% | Reduced |
| Canada Pension Plan Investment Board | 15,800 | $2.63M | 0.00% | −300−1.9% | Reduced |
| State of New Jersey Common Pension Fund D | 15,867 | $2.64M | 0.01% | −869−5.2% | Reduced |
| Brevan Howard Capital Management LP | 16,019 | $2.67M | 0.07% | +16,019 | New |
| State of Wisconsin Investment Board | 16,534 | $2.75M | 0.01% | −404−2.4% | Reduced |
| Squarepoint Ops LLC | 16,668 | $2.78M | 0.01% | +16,668 | New |
| Aquatic Capital Management LLC | 17,388 | $2.90M | 0.07% | +17,388 | New |
| Gluskin Sheff & Assoc Inc | 17,455 | $2.91M | 0.37% | −19,606−52.9% | Reduced |
| Storebrand Asset Management AS | 17,732 | $2.95M | 0.01% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 18,170 | $3.03M | 0.01% | +2,870+18.8% | Added |
| Wells Fargo & Company | 18,517 | $3.08M | 0.00% | −1,226−6.2% | Reduced |
| Janus Henderson Group PLC | 20,000 | $3.27M | 0.00% | −1,000−4.8% | Reduced |
| Treasurer of the State of North Carolina | 19,855 | $3.31M | 0.01% | +770+4.0% | Added |
| Cardinal Capital Management | 19,868 | $3.31M | 0.51% | +1,148+6.1% | Added |
| Sterling Capital Management LLC | 20,606 | $3.43M | 0.05% | −5,615−21.4% | Reduced |
| Amalgamated Bank | 20,662 | $3.44M | 0.03% | −642−3.0% | Reduced |
| Mutual of America Capital Management LLC | 22,871 | $3.81M | 0.04% | −603−2.6% | Reduced |
| EAM Investors, LLC | 22,952 | $3.82M | 0.66% | +22,952 | New |
| Calamos Advisors LLC | 23,449 | $3.91M | 0.02% | +7,169+44.0% | Added |
| New York State Common Retirement Fund | 24,160 | $4.03M | 0.01% | −30.0% | Reduced |
| South Dakota Investment Council | 24,768 | $4.13M | 0.08% | −5,843−19.1% | Reduced |
| Two Sigma Investments, LP | 25,165 | $4.19M | 0.01% | −14,724−36.9% | Reduced |
| Nordea Investment Management AB | 26,209 | $4.22M | 0.00% | +7,027+36.6% | Added |
| MetLife Investment Management | 25,640 | $4.27M | 0.02% | −386−1.5% | Reduced |
| Westmount Partners, LLC | 25,991 | $4.33M | 1.32% | 00.0% | Unchanged |
| Redmile Group, LLC | 26,062 | $4.34M | 0.41% | +26,062 | New |
| Victory Capital Management Inc | 26,367 | $4.39M | 0.00% | +17,363+192.8% | Added |
| Great West Life Assurance Co | 26,612 | $4.43M | 0.01% | −10,948−29.1% | Reduced |
| Advisors Asset Management, Inc. | 27,288 | $4.55M | 0.09% | +4,314+18.8% | Added |
| Zacks Investment Management | 27,807 | $4.63M | 0.04% | +578+2.1% | Added |
| 4D Advisors, LLC | 30,000 | $5.00M | 3.88% | +30,000 | New |
| Perpetual Ltd | 30,209 | $5.03M | 0.06% | +30,209 | New |
| Lisanti Capital Growth, LLC | 30,485 | $5.08M | 1.51% | +30,485 | New |
| Envestnet Asset Management Inc | 31,788 | $5.30M | 0.00% | +681+2.2% | Added |