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 2023
Institutional positions in Masimo Corp as of Mar 31, 2023. 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
- 428
- +31 vs. Q4 2022
- Shares held
- 45.0M
- +592.5K (+1.3%) vs. Q4 2022
- Total value
- $8.30B
- +$1.73B (+26.4%) vs. Q4 2022
- New holders
- 68
- 134 more added
- Sold out
- 37
- 143 more reduced
8 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 6,084,956 | $1.12B | 0.10% | +628,612+11.5% | Added |
| BlackRock Inc. | 5,941,856 | $1.10B | 0.03% | −15,092−0.3% | Reduced |
| Politan Capital Management LP | 4,739,963 | $874.7M | 50.83% | 00.0% | Unchanged |
| Vanguard Group Inc | 4,672,351 | $862.2M | 0.02% | −183,150−3.8% | Reduced |
| State Street Corp | 1,711,595 | $315.9M | 0.02% | +12,836+0.8% | Added |
| Capital Research Global Investors | 1,651,550 | $304.8M | 0.09% | +700,831+73.7% | Added |
| RTW Investments, LP | 1,501,493 | $277.1M | 5.77% | 00.0% | Unchanged |
| Liontrust Investment Partners LLP | 952,200 | $175.7M | 2.64% | +1,500+0.2% | Added |
| Fundsmith LLPSuperinvestorFundsmith | 764,319 | $141.0M | 0.61% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 726,018 | $133.8M | 0.02% | +22,822+3.2% | Added |
| Schroder Investment Management Group | 698,988 | $129.0M | 0.19% | +121,711+21.1% | Added |
| Farallon Capital Management, L.L.C. | 631,649 | $116.6M | 0.71% | −126,851−16.7% | Reduced |
| T. Rowe Price Investment Management, Inc. | 536,155 | $98.9M | 0.07% | −5,605−1.0% | Reduced |
| Bank of New York Mellon Corp | 523,460 | $96.6M | 0.02% | −14,892−2.8% | Reduced |
| Martin Currie Ltd | 500,495 | $92.4M | 3.30% | −44,653−8.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 492,946 | $91.0M | 0.07% | +108,465+28.2% | Added |
| Northern Trust Corp | 462,734 | $85.4M | 0.02% | +1,098+0.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 415,484 | $76.7M | 0.27% | −63,765−13.3% | Reduced |
| Millennium Management LLC | 395,553 | $73.0M | 0.08% | +204,617+107.2% | Added |
| Norges Bank | 371,210 | $68.5M | 0.01% | +81,131+28.0% | Added |
| Charles Schwab Investment Management Inc | 357,874 | $66.0M | 0.02% | +4,227+1.2% | Added |
| Ensemble Capital Management, LLC | 344,918 | $63.7M | 6.59% | +19,165+5.9% | Added |
| Legal & General Group Plc | 328,976 | $60.7M | 0.02% | −1,199−0.4% | Reduced |
| Alyeska Investment Group, L.P. | 323,392 | $59.7M | 0.53% | +67,595+26.4% | Added |
| Morgan Stanley | 311,260 | $57.4M | 0.01% | −171,995−35.6% | Reduced |
| Geneva Capital Management LLC | 307,039 | $56.7M | 1.15% | +7,184+2.4% | Added |
| Raymond James & Associates | 271,400 | $50.1M | 0.04% | +9,655+3.7% | Added |
| JPMorgan Chase & Co | 264,563 | $48.8M | 0.01% | −3,736−1.4% | Reduced |
| First Republic Investment Management, Inc. | 262,810 | $48.5M | 0.10% | −141−0.1% | Reduced |
| Two Sigma Advisers, LP | 252,100 | $46.5M | 0.12% | −106,900−29.8% | Reduced |
| Dimensional Fund Advisors LP | 237,875 | $43.9M | 0.01% | +9,213+4.0% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 235,250 | $43.9M | 3.27% | −8,296−3.4% | Reduced |
| D. E. Shaw & Co., Inc. | 199,688 | $36.9M | 0.06% | −82,684−29.3% | Reduced |
| Swiss National Bank | 197,700 | $36.5M | 0.03% | −5,100−2.5% | Reduced |
| Principal Financial Group Inc | 195,048 | $36.0M | 0.03% | +808+0.4% | Added |
| MIG Capital, LLC | 187,535 | $34.6M | 5.98% | +60,656+47.8% | Added |
| Hawk Ridge Capital Management LP | 185,221 | $34.2M | 1.94% | −6,900−3.6% | Reduced |
| UBS Asset Management Americas Inc | 173,976 | $32.1M | 0.02% | −1,619−0.9% | Reduced |
| Rockefeller Capital Management L.P. | 159,726 | $29.5M | 0.13% | +147,839+1,243.7% | Added |
| Citadel Advisors LLC | 156,321 | $28.8M | 0.03% | +123,109+370.7% | Added |
| Retirement Systems of Alabama | 152,388 | $28.1M | 0.12% | −551−0.4% | Reduced |
| Rhumbline Advisers | 149,357 | $27.6M | 0.03% | +2,366+1.6% | Added |
| Montanaro Asset Management Ltd | 133,750 | $24.7M | 3.83% | +15,000+12.6% | Added |
| Nuveen Asset Management, LLC | 128,823 | $23.8M | 0.01% | +27,616+27.3% | Added |
| Neuberger Berman Group LLC | 125,632 | $23.2M | 0.02% | +1,693+1.4% | Added |
| Cinctive Capital Management LP | 122,258 | $22.6M | 0.84% | +79,940+188.9% | Added |
| Citigroup Inc | 121,137 | $22.4M | 0.03% | +1,986+1.7% | Added |
| Price T Rowe Associates Inc | 116,671 | $21.5M | 0.00% | +91,648+366.3% | Added |
| Invesco Ltd. | 115,820 | $21.4M | 0.01% | +14,543+14.4% | Added |
| Arrowstreet Capital, Limited Partnership | 109,311 | $20.2M | 0.03% | +23,082+26.8% | Added |
| Deutsche Bank AG | 105,474 | $19.5M | 0.01% | −63,962−37.7% | Reduced |
| Baillie Gifford & Co | 96,012 | $17.7M | 0.02% | −123−0.1% | Reduced |
| California Public Employees Retirement System | 95,707 | $17.7M | 0.02% | −14,807−13.4% | Reduced |
| UBS Group AG | 94,915 | $17.5M | 0.01% | −1,740−1.8% | Reduced |
| Bank of Montreal | 90,376 | $16.7M | 0.01% | −116,853−56.4% | Reduced |
| Gamco Investors, Inc. Et Al | 85,000 | $15.7M | 0.17% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 83,711 | $15.4M | 0.01% | +13,041+18.5% | Added |
| California State Teachers Retirement System | 82,455 | $15.2M | 0.02% | −699−0.8% | Reduced |
| Renaissance Technologies LLC | 81,300 | $15.0M | 0.02% | −98,400−54.8% | Reduced |
| American International Group, Inc. | 74,783 | $13.8M | 0.09% | −708−0.9% | Reduced |
| Alliancebernstein L.P. | 71,819 | $13.3M | 0.01% | −13,881−16.2% | Reduced |
| Amundi | 71,429 | $13.1M | 0.01% | −43,079−37.6% | Reduced |
| Royal Bank of Canada | 68,516 | $12.6M | 0.00% | +1,283+1.9% | Added |
| Pictet Asset Management SA | 65,770 | $12.1M | 0.02% | +48,318+276.9% | Added |
| British Columbia Investment Management Corp | 64,415 | $11.9M | 0.12% | −18,500−22.3% | Reduced |
| Bank of America Corp | 63,333 | $11.7M | 0.00% | +39,910+170.4% | Added |
| New York State Common Retirement Fund | 63,012 | $11.6M | 0.02% | −3,422−5.2% | Reduced |
| Goldman Sachs Group Inc | 62,049 | $11.5M | 0.00% | −212,007−77.4% | Reduced |
| New York State Teachers Retirement System | 61,655 | $11.4M | 0.03% | −1,800−2.8% | Reduced |
| Bridgewater Associates, LP | 61,450 | $11.3M | 0.07% | +882+1.5% | Added |
| Harbor Spring Capital, LLC | 61,239 | $11.3M | 4.55% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 63,060 | $11.1M | 0.03% | +7,954+14.4% | Added |
| Public Sector Pension Investment Board | 60,000 | $11.1M | 0.08% | 00.0% | Unchanged |
| Credit Suisse AG | 55,910 | $10.3M | 0.01% | −29,756−34.7% | Reduced |
| State Board of Administration of Florida Retirement System | 54,839 | $10.1M | 0.02% | −700−1.3% | Reduced |
| Bryn Mawr Trust Co | 54,526 | $10.1M | 0.44% | +3,822+7.5% | Added |
| Federated Hermes, Inc. | 53,527 | $9.88M | 0.02% | +46,186+629.2% | Added |
| Allspring Global Investments Holdings, LLC | 52,175 | $9.63M | 0.02% | +3,050+6.2% | Added |
| Logan Capital Management Inc | 51,639 | $9.53M | 0.46% | +129+0.3% | Added |
| 1832 Asset Management L.P. | 50,000 | $9.23M | 0.02% | +50,000 | New |
| Balyasny Asset Management LLC | 48,632 | $8.97M | 0.03% | −65,704−57.5% | Reduced |
| HRT Financial LP | 48,289 | $8.91M | 0.11% | +48,289 | New |
| Susquehanna Fundamental Investments, LLC | 46,669 | $8.61M | 0.20% | −25,491−35.3% | Reduced |
| Asset Management One Co.,Ltd. | 45,418 | $8.32M | 0.04% | +1,926+4.4% | Added |
| Mirae Asset Global Investments Co., Ltd. | 44,349 | $8.18M | 0.02% | −546−1.2% | Reduced |
| Barclays PLC | 43,450 | $8.02M | 0.01% | −551−1.3% | Reduced |
| Texas Permanent School Fund | 43,369 | $8.00M | 0.08% | +10,857+33.4% | Added |
| First Trust Advisors LP | 43,260 | $7.98M | 0.01% | −82,061−65.5% | Reduced |
| Manufacturers Life Insurance Company, The | 42,659 | $7.87M | 0.00% | +3,509+9.0% | Added |
| Great West Life Assurance Co | 42,566 | $7.86M | 0.02% | −9,923−18.9% | Reduced |
| NS Partners Ltd | 42,074 | $7.76M | 0.44% | +75+0.2% | Added |
| SEI Investments Co | 42,005 | $7.75M | 0.01% | +17,434+71.0% | Added |
| APG Asset Management N.V. | 44,669 | $7.59M | 0.02% | −7,334−14.1% | Reduced |
| Teacher Retirement System of Texas | 40,902 | $7.55M | 0.05% | +2,487+6.5% | Added |
| SG Capital Management LLC | 40,102 | $7.40M | 2.68% | +40,102 | New |
| E. Ohman J:or Asset Management AB | 39,613 | $7.31M | 0.29% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 38,939 | $7.19M | 0.09% | −815−2.1% | Reduced |
| Bessemer Group Inc | 36,386 | $6.71M | 0.02% | +5,483+17.7% | Added |
| Forte Capital LLC | 35,284 | $6.51M | 1.00% | +536+1.5% | Added |
| Castleark Management LLC | 35,240 | $6.50M | 0.32% | +35,240 | New |