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 2024
Institutional positions in Masimo Corp as of Dec 31, 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
- 366
- +12 vs. Q3 2024
- Shares held
- 51.4M
- +1.55M (+3.1%) vs. Q3 2024
- Total value
- $8.50B
- +$1.86B (+28.0%) vs. Q3 2024
- New holders
- 62
- 117 more added
- Sold out
- 50
- 119 more reduced
8 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pacer Advisors, Inc. | 6,452 | $1.07M | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 6,813 | $1.13M | 0.00% | +2,003+41.6% | Added |
| BNP Paribas Arbitrage, SA | 7,020 | $1.16M | 0.00% | −12,962−64.9% | Reduced |
| Guggenheim Capital LLC | 7,021 | $1.16M | 0.01% | +2,674+61.5% | Added |
| Xponance, Inc. | 7,025 | $1.16M | 0.01% | +299+4.4% | Added |
| Verition Fund Management LLC | 7,481 | $1.24M | 0.01% | +5,641+306.6% | Added |
| HRT Financial LP | 8,033 | $1.33M | 0.01% | −39,976−83.3% | Reduced |
| TownSquare Capital, LLC | 8,126 | $1.34M | 0.02% | +8,126 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,195 | $1.35M | 0.00% | +318+4.0% | Added |
| De Burlo Group Inc | 8,552 | $1.41M | 0.19% | −200−2.3% | Reduced |
| Ameritas Investment Partners, Inc. | 8,901 | $1.47M | 0.05% | −158−1.7% | Reduced |
| Victory Capital Management Inc | 9,004 | $1.49M | 0.00% | −236−2.6% | Reduced |
| Oregon Public Employees Retirement Fund | 9,079 | $1.50M | 0.03% | +113+1.3% | Added |
| Illinois Municipal Retirement Fund | 9,309 | $1.54M | 0.02% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 9,400 | $1.55M | 0.01% | +9,400 | New |
| NEOS Investment Management LLC | 9,580 | $1.58M | 0.04% | −5,030−34.4% | Reduced |
| Tema ETFs LLC | 9,580 | $1.58M | 0.66% | +9,580 | New |
| Lecap Asset Management Ltd | 9,720 | $1.61M | 0.44% | +9,720 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 9,815 | $1.62M | 0.01% | +82+0.8% | Added |
| Northwestern Mutual Investment Management Company, LLC | 9,876 | $1.63M | 0.04% | +80+0.8% | Added |
| New Mexico Educational Retirement Board | 9,900 | $1.64M | 0.05% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 10,456 | $1.73M | 0.00% | +83+0.8% | Added |
| State of Michigan Retirement System | 10,496 | $1.73M | 0.01% | 00.0% | Unchanged |
| Exchange Traded Concepts, LLC | 10,552 | $1.74M | 0.04% | −1,998−15.9% | Reduced |
| Jefferies Financial Group Inc. | 10,657 | $1.76M | 0.02% | +10,657 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 11,305 | $1.87M | 0.00% | −1,980−14.9% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.88M | 0.09% | 00.0% | Unchanged |
| Bridgewater Associates, LP | 11,391 | $1.88M | 0.01% | +3,774+49.5% | Added |
| Louisiana State Employees Retirement System | 12,300 | $2.03M | 0.04% | +100+0.8% | Added |
| Voya Investment Management LLC | 12,559 | $2.08M | 0.00% | −499−3.8% | Reduced |
| American Century Companies Inc | 12,659 | $2.09M | 0.00% | +1,374+12.2% | Added |
| Handelsbanken Fonder AB | 12,930 | $2.14M | 0.01% | −300−2.3% | Reduced |
| Arizona State Retirement System | 13,183 | $2.18M | 0.01% | +166+1.3% | Added |
| Marshall Wace, LLP | 13,289 | $2.20M | 0.00% | +13,289 | New |
| Lockerman Financial Group, Inc. | 13,600 | $2.25M | 3.83% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 13,717 | $2.27M | 0.04% | −35,347−72.0% | Reduced |
| Empower Advisory Group, LLC | 14,060 | $2.32M | 0.01% | −60.0% | Reduced |
| Creative Planning | 14,197 | $2.35M | 0.00% | −503−3.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 14,771 | $2.44M | 0.02% | −680−4.4% | Reduced |
| Ensign Peak Advisors, Inc | 14,876 | $2.46M | 0.00% | +715+5.0% | Added |
| Birchview Capital, LP | 15,280 | $2.53M | 2.06% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 15,284 | $2.53M | 0.01% | −692−4.3% | Reduced |
| State of Tennessee, Treasury Department | 15,300 | $2.53M | 0.01% | −431−2.7% | Reduced |
| STRS Ohio | 15,400 | $2.55M | 0.01% | +2,612+20.4% | Added |
| Brown Advisory Inc | 15,521 | $2.57M | 0.00% | −1,930−11.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 15,573 | $2.57M | 0.03% | +15,573 | New |
| Canada Pension Plan Investment Board | 16,100 | $2.66M | 0.00% | −88,200−84.6% | Reduced |
| Yousif Capital Management, LLC | 16,155 | $2.67M | 0.03% | −582−3.5% | Reduced |
| Calamos Advisors LLC | 16,280 | $2.69M | 0.01% | +16,280 | New |
| State of New Jersey Common Pension Fund D | 16,736 | $2.77M | 0.01% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 16,934 | $2.80M | 0.01% | −501−2.9% | Reduced |
| State of Wisconsin Investment Board | 16,938 | $2.80M | 0.01% | −8,203−32.6% | Reduced |
| Storebrand Asset Management AS | 17,732 | $2.93M | 0.01% | 00.0% | Unchanged |
| Abn Amro Investment Solutions | 18,473 | $3.05M | 0.06% | −564−3.0% | Reduced |
| Cardinal Capital Management | 18,720 | $3.09M | 0.49% | +203+1.1% | Added |
| Treasurer of the State of North Carolina | 19,085 | $3.15M | 0.01% | +370+2.0% | Added |
| KBC Group NV | 19,122 | $3.16M | 0.01% | +17,842+1,393.9% | Added |
| Nordea Investment Management AB | 19,182 | $3.21M | 0.00% | +142+0.7% | Added |
| Russell Investments Group, Ltd. | 19,703 | $3.26M | 0.00% | +19,185+3,703.7% | Added |
| Wells Fargo & Company | 19,743 | $3.26M | 0.00% | −31,855−61.7% | Reduced |
| Fred Alger Management, LLC | 20,430 | $3.38M | 0.02% | +15,971+358.2% | Added |
| Janus Henderson Group PLC | 21,000 | $3.47M | 0.00% | −800−3.7% | Reduced |
| Amalgamated Bank | 21,304 | $3.52M | 0.03% | −90.0% | Reduced |
| Advisors Asset Management, Inc. | 22,974 | $3.80M | 0.07% | +8,758+61.6% | Added |
| Mutual of America Capital Management LLC | 23,474 | $3.88M | 0.04% | −391−1.6% | Reduced |
| New York State Common Retirement Fund | 24,163 | $3.99M | 0.01% | −2,000−7.6% | Reduced |
| Bellevue Group AG | 24,166 | $3.99M | 0.08% | +24,166 | New |
| Cinctive Capital Management LP | 25,176 | $4.16M | 0.22% | +25,176 | New |
| ExodusPoint Capital Management, LP | 25,426 | $4.20M | 0.04% | +25,426 | New |
| Intech Investment Management LLC | 25,622 | $4.24M | 0.04% | +16,178+171.3% | Added |
| Westmount Partners, LLC | 25,991 | $4.30M | 1.31% | 00.0% | Unchanged |
| MetLife Investment Management | 26,026 | $4.30M | 0.02% | +2,214+9.3% | Added |
| Sterling Capital Management LLC | 26,221 | $4.33M | 0.06% | −14,718−36.0% | Reduced |
| SEI Investments Co | 26,601 | $4.40M | 0.01% | −1,481−5.3% | Reduced |
| Zacks Investment Management | 27,229 | $4.50M | 0.04% | +671+2.5% | Added |
| Royal Bank of Canada | 30,371 | $5.02M | 0.00% | +16,886+125.2% | Added |
| Jane Street Group, LLC | 30,487 | $5.04M | 0.01% | +5,807+23.5% | Added |
| South Dakota Investment Council | 30,611 | $5.06M | 0.10% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 31,107 | $5.14M | 0.00% | +4,579+17.3% | Added |
| O'Shaughnessy Asset Management, LLC | 31,375 | $5.19M | 0.04% | +31,375 | New |
| Gabelli Funds LLC | 33,000 | $5.45M | 0.04% | 00.0% | Unchanged |
| Norges Bank | 33,394 | $5.52M | 0.00% | −221,994−86.9% | Reduced |
| Baird Financial Group, Inc. | 34,198 | $5.65M | 0.01% | +26,914+369.5% | Added |
| Atika Capital Management LLC | 36,800 | $6.08M | 0.79% | +36,800 | New |
| Gluskin Sheff & Assoc Inc | 37,061 | $6.13M | 0.73% | +22,636+156.9% | Added |
| Great West Life Assurance Co | 37,560 | $6.20M | 0.01% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 39,889 | $6.59M | 0.02% | −302,938−88.4% | Reduced |
| California State Teachers Retirement System | 42,383 | $7.01M | 0.01% | −229−0.5% | Reduced |
| LMR Partners LLP | 42,448 | $7.02M | 0.12% | +42,448 | New |
| Picton Mahoney Asset Management | 42,610 | $7.04M | 0.27% | +28,153+194.7% | Added |
| NS Partners Ltd | 42,649 | $7.05M | 0.29% | −388−0.9% | Reduced |
| State Board of Administration of Florida Retirement System | 42,861 | $7.08M | 0.01% | −40−0.1% | Reduced |
| New York State Teachers Retirement System | 45,248 | $7.48M | 0.02% | −200−0.4% | Reduced |
| Montanaro Asset Management Ltd | 46,500 | $7.69M | 1.59% | −9,200−16.5% | Reduced |
| First Trust Advisors LP | 47,328 | $7.82M | 0.01% | +41,952+780.4% | Added |
| Ace Management Global Ltd. | 47,694 | $7.88M | 100.00% | −917,810−95.1% | Reduced |
| Logan Capital Management Inc | 47,787 | $7.90M | 0.33% | −2,565−5.1% | Reduced |
| Allspring Global Investments Holdings, LLC | 48,764 | $8.22M | 0.01% | +46,370+1,936.9% | Added |
| Corebridge Financial, Inc. | 50,536 | $8.35M | 0.05% | −1,930−3.7% | Reduced |
| Woodline Partners LP | 51,185 | $8.46M | 0.06% | +41,885+450.4% | Added |