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 2025
Institutional positions in Masimo Corp as of Dec 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
- 392
- +37 vs. Q3 2025
- Shares held
- 55.4M
- −842.2K (−1.5%) vs. Q3 2025
- Total value
- $7.20B
- −$1.09B (−13.1%) vs. Q3 2025
- New holders
- 86
- 102 more added
- Sold out
- 49
- 132 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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 2025
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FORA Capital, LLC | 5,174 | $672.9K | 0.08% | +1,552+42.8% | Added |
| Bank of Nova Scotia | 5,247 | $682.4K | 0.00% | +5,247 | New |
| B.O.S.S. Retirement Advisors, LLC | 5,337 | $694.1K | 0.22% | 00.0% | Unchanged |
| Malaga Cove Capital, LLC | 5,366 | $697.9K | 0.24% | +350+7.0% | Added |
| Magnetar Financial LLC | 5,455 | $709.5K | 0.01% | +5,455 | New |
| Colony Group, LLC | 5,474 | $711.9K | 0.00% | +5,474 | New |
| Cinctive Capital Management LP | 5,681 | $738.9K | 0.04% | +5,681 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 5,812 | $755.9K | 0.00% | +40+0.7% | Added |
| Graham Capital Management, L.P. | 6,017 | $782.6K | 0.03% | +247+4.3% | Added |
| Navellier & Associates Inc | 6,310 | $820.7K | 0.09% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 6,540 | $850.6K | 0.00% | −301−4.4% | Reduced |
| Deutsche Bank AG | 6,736 | $876.1K | 0.00% | +131+2.0% | Added |
| Pathstone Holdings, LLC | 7,107 | $924.3K | 0.00% | +147+2.1% | Added |
| The PNC Financial Services Group, Inc. | 7,287 | $947.7K | 0.00% | +35+0.5% | Added |
| Pacer Advisors, Inc. | 7,360 | $957.2K | 0.00% | +1,280+21.1% | Added |
| LPL Financial LLC | 7,512 | $977.0K | 0.00% | +190+2.6% | Added |
| JustInvest LLC | 7,523 | $978.4K | 0.01% | +730+10.7% | Added |
| BNP Paribas Arbitrage, SA | 7,529 | $979.2K | 0.00% | −6,978−48.1% | Reduced |
| SEI Investments Co | 7,715 | $1.00M | 0.00% | −13,940−64.4% | Reduced |
| Wellington Management Group LLP | 7,832 | $1.02M | 0.00% | +5,638+257.0% | Added |
| De Burlo Group Inc | 7,952 | $1.03M | 0.13% | −100−1.2% | Reduced |
| Bryn Mawr Trust Co | 8,024 | $1.04M | 0.02% | −875−9.8% | Reduced |
| OP Asset Management Ltd | 8,207 | $1.07M | 0.01% | +1,899+30.1% | Added |
| Birchview Capital, LP | 8,280 | $1.08M | 0.63% | 00.0% | Unchanged |
| Redwood Investment Management, LLC | 8,435 | $1.10M | 0.12% | +8,435 | New |
| Xponance, Inc. | 8,738 | $1.14M | 0.01% | −692−7.3% | Reduced |
| Oregon Public Employees Retirement Fund | 9,074 | $1.18M | 0.02% | −200−2.2% | Reduced |
| ExodusPoint Capital Management, LP | 9,385 | $1.22M | 0.01% | +9,385 | New |
| Dynamic Technology Lab Private Ltd | 9,480 | $1.23M | 0.28% | +9,480 | New |
| Polymer Capital Management (US) LLC | 9,523 | $1.24M | 0.16% | +3,647+62.1% | Added |
| Harbor Capital Advisors, Inc. | 9,599 | $1.25M | 0.10% | −333−3.4% | Reduced |
| Occudo Quantitative Strategies LP | 9,663 | $1.26M | 0.08% | +4,515+87.7% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,698 | $1.26M | 0.00% | +508+5.5% | Added |
| Victory Capital Management Inc | 9,836 | $1.28M | 0.00% | −23,209−70.2% | Reduced |
| New Mexico Educational Retirement Board | 9,900 | $1.29M | 0.04% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 10,215 | $1.33M | 0.02% | −78−0.8% | Reduced |
| Picton Mahoney Asset Management | 10,500 | $1.37M | 0.01% | −1,470−12.3% | Reduced |
| KLP Kapitalforvaltning AS | 10,600 | $1.38M | 0.01% | +800+8.2% | Added |
| State of Michigan Retirement System | 10,796 | $1.40M | 0.01% | −200−1.8% | Reduced |
| Mercer Global Advisors Inc | 10,862 | $1.41M | 0.00% | +10,862 | New |
| Sterling Capital Management LLC | 10,885 | $1.42M | 0.02% | +272+2.6% | Added |
| Royal Bank of Canada | 11,340 | $1.47M | 0.00% | −115,777−91.1% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.48M | 0.06% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 11,359 | $1.48M | 0.02% | −4,206−27.0% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 11,425 | $1.49M | 0.01% | −426−3.6% | Reduced |
| Summit Trail Advisors, LLC | 11,696 | $1.52M | 0.03% | +7,971+214.0% | Added |
| Lockerman Financial Group, Inc. | 11,800 | $1.53M | 2.94% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 11,371 | $1.56M | 0.00% | +9,423+483.7% | Added |
| Comerica Bank | 12,233 | $1.59M | 0.01% | −221,194−94.8% | Reduced |
| Louisiana State Employees Retirement System | 12,600 | $1.64M | 0.03% | −300−2.3% | Reduced |
| XTX Topco Ltd | 12,746 | $1.66M | 0.04% | +12,746 | New |
| Arizona State Retirement System | 12,818 | $1.67M | 0.01% | −791−5.8% | Reduced |
| Jump Financial, LLC | 12,953 | $1.68M | 0.02% | +12,953 | New |
| Empower Advisory Group, LLC | 13,105 | $1.70M | 0.00% | −1,000−7.1% | Reduced |
| Lecap Asset Management Ltd | 13,196 | $1.72M | 0.68% | +13,196 | New |
| Quantinno Capital Management LP | 13,253 | $1.72M | 0.00% | −26,336−66.5% | Reduced |
| Ameritas Investment Partners, Inc. | 13,272 | $1.73M | 0.05% | +4,616+53.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 13,537 | $1.76M | 0.00% | +678+5.3% | Added |
| Public Employees Retirement System of Ohio | 13,879 | $1.81M | 0.01% | −517−3.6% | Reduced |
| Trexquant Investment LP | 13,920 | $1.81M | 0.02% | +13,920 | New |
| Sumitomo Mitsui Trust Holdings, Inc. | 14,572 | $1.90M | 0.00% | −382,676−96.3% | Reduced |
| State of Tennessee, Treasury Department | 13,918 | $1.91M | 0.01% | −596−4.1% | Reduced |
| Handelsbanken Fonder AB | 14,730 | $1.92M | 0.01% | +2,400+19.5% | Added |
| Teachers Retirement System of the State of Kentucky | 14,771 | $1.92M | 0.01% | 00.0% | Unchanged |
| Brown Advisory Inc | 14,854 | $1.93M | 0.00% | −679−4.4% | Reduced |
| ADAR1 Capital Management, LLC | 15,000 | $1.95M | 0.15% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 15,932 | $2.07M | 0.01% | −825−4.9% | Reduced |
| Yousif Capital Management, LLC | 14,528 | $2.07M | 0.02% | −356−2.4% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 16,147 | $2.10M | 0.03% | +16,147 | New |
| Tudor Investment Corp Et Al | 16,242 | $2.11M | 0.01% | −15,399−48.7% | Reduced |
| Dark Forest Capital Management LP | 16,385 | $2.13M | 0.10% | +6,376+63.7% | Added |
| SG Americas Securities, LLC | 16,429 | $2.14M | 0.00% | +7,510+84.2% | Added |
| State of New Jersey Common Pension Fund D | 16,652 | $2.17M | 0.01% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 16,849 | $2.19M | 0.00% | +14,124+518.3% | Added |
| Envestnet Asset Management Inc | 16,975 | $2.21M | 0.00% | −4,167−19.7% | Reduced |
| Creative Planning | 17,109 | $2.23M | 0.00% | +6,075+55.1% | Added |
| Commerce Bank | 17,876 | $2.32M | 0.01% | −1,015−5.4% | Reduced |
| CWM, LLC | 18,535 | $2.41M | 0.01% | +17,671+2,045.3% | Added |
| Worldquant Millennium Advisors LLC | 18,558 | $2.41M | 0.01% | +15,896+597.1% | Added |
| Wells Fargo & Company | 18,697 | $2.43M | 0.00% | +1,417+8.2% | Added |
| Treasurer of the State of North Carolina | 18,886 | $2.46M | 0.01% | −1,382−6.8% | Reduced |
| Mutual of America Capital Management LLC | 19,001 | $2.47M | 0.03% | −2,324−10.9% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 19,484 | $2.53M | 0.02% | −511−2.6% | Reduced |
| State of Wisconsin Investment Board | 19,490 | $2.53M | 0.01% | −2,248−10.3% | Reduced |
| Advisors Asset Management, Inc. | 19,858 | $2.58M | 0.04% | −4,330−17.9% | Reduced |
| Janus Henderson Group PLC | 20,000 | $2.60M | 0.00% | 00.0% | Unchanged |
| South Dakota Investment Council | 21,268 | $2.77M | 0.05% | −1,800−7.8% | Reduced |
| Mariner, LLC | 21,449 | $2.79M | 0.00% | +21,449 | New |
| Cardinal Capital Management | 21,462 | $2.79M | 0.37% | +282+1.3% | Added |
| Amalgamated Bank | 21,551 | $2.80M | 0.02% | −1,050−4.6% | Reduced |
| Thrivent Financial for Lutherans | 23,174 | $3.01M | 0.01% | +8,323+56.0% | Added |
| Cerity Partners LLC | 23,774 | $3.09M | 0.00% | +21,363+886.1% | Added |
| New York State Common Retirement Fund | 24,160 | $3.14M | 0.00% | 00.0% | Unchanged |
| Westmount Partners, LLC | 24,232 | $3.15M | 0.79% | −1,634−6.3% | Reduced |
| MetLife Investment Management | 24,472 | $3.18M | 0.02% | −1,377−5.3% | Reduced |
| Intech Investment Management LLC | 24,765 | $3.22M | 0.03% | −4,925−16.6% | Reduced |
| Gluskin Sheff & Assoc Inc | 25,805 | $3.36M | 0.47% | −2,118−7.6% | Reduced |
| Logan Capital Management Inc | 26,505 | $3.45M | 0.15% | +1,400+5.6% | Added |
| Great West Life Assurance Co | 26,610 | $3.46M | 0.01% | −510−1.9% | Reduced |
| Storebrand Asset Management AS | 27,714 | $3.60M | 0.01% | −18−0.1% | Reduced |