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, Q3 2021
Institutional positions in Masimo Corp as of Sep 30, 2021. 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
- 475
- +20 vs. Q2 2021
- Shares held
- 46.3M
- +529.7K (+1.2%) vs. Q2 2021
- Total value
- $12.5B
- +$1.43B (+12.9%) vs. Q2 2021
- New holders
- 56
- 148 more added
- Sold out
- 36
- 175 more reduced
4 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State of Michigan Retirement System | 12,666 | $3.43M | 0.02% | −100−0.8% | Reduced |
| Arcadia Investment Management Corp | 12,727 | $3.44M | 0.64% | +248+2.0% | Added |
| Louisiana State Employees Retirement System | 12,900 | $3.49M | 0.08% | −200−1.5% | Reduced |
| Employees Retirement System of Texas | 13,400 | $3.63M | 0.04% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 13,417 | $3.63M | 0.13% | −260−1.9% | Reduced |
| Polar Capital Holdings Plc | 13,544 | $3.67M | 0.02% | −8,068−37.3% | Reduced |
| Security Asset Management | 13,730 | $3.72M | 1.50% | +171+1.3% | Added |
| De Burlo Group Inc | 13,752 | $3.72M | 0.60% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 14,109 | $3.82M | 0.02% | 00.0% | Unchanged |
| Unigestion Holding SA | 14,175 | $3.83M | 0.16% | −2,344−14.2% | Reduced |
| Ascent Wealth Partners, LLC | 14,427 | $3.91M | 0.75% | +23+0.2% | Added |
| Advisors Asset Management, Inc. | 14,456 | $3.91M | 0.06% | −1,937−11.8% | Reduced |
| Arizona State Retirement System | 14,663 | $3.97M | 0.03% | −177−1.2% | Reduced |
| Vontobel Holding Ltd. | 14,678 | $3.97M | 0.04% | −6,472−30.6% | Reduced |
| Mackenzie Financial Corp | 14,860 | $4.02M | 0.01% | +7,728+108.4% | Added |
| Brewin Dolphin Ltd | 15,940 | $4.32M | 0.18% | +1,025+6.9% | Added |
| Fred Alger Management, LLC | 16,572 | $4.49M | 0.01% | 00.0% | Unchanged |
| Autus Asset Management, LLC | 16,732 | $4.53M | 0.50% | −60.0% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 16,734 | $4.53M | 0.05% | −123−0.7% | Reduced |
| Oregon Public Employees Retirement Fund | 16,899 | $4.58M | 0.05% | −444−2.6% | Reduced |
| Personal Capital Advisors Corp | 17,155 | $4.64M | 0.02% | +134+0.8% | Added |
| Mandatum Life Insurance Co Ltd | 17,279 | $4.68M | 0.87% | 00.0% | Unchanged |
| Pictet Asset Management SA | 17,920 | $4.85M | 0.01% | +17,920 | New |
| PDT Partners, LLC | 18,000 | $4.87M | 0.35% | +18,000 | New |
| Citadel Advisors LLC | 18,255 | $4.94M | 0.01% | +5,437+42.4% | Added |
| Federated Hermes, Inc. | 18,297 | $4.95M | 0.01% | −27−0.1% | Reduced |
| Russell Investments Group, Ltd. | 18,643 | $5.04M | 0.01% | −6,617−26.2% | Reduced |
| Treasurer of the State of North Carolina | 18,771 | $5.08M | 0.03% | +609+3.4% | Added |
| Brookfield Asset Management Inc. | 19,354 | $5.24M | 0.02% | +5,978+44.7% | Added |
| KBC Group NV | 19,453 | $5.27M | 0.02% | −3,355−14.7% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 20,243 | $5.48M | 0.03% | −811−3.9% | Reduced |
| North Star Asset Management Inc | 21,011 | $5.69M | 0.31% | −157−0.7% | Reduced |
| Candriam Luxembourg S.C.A. | 21,090 | $5.71M | 0.04% | 00.0% | Unchanged |
| Prudential Financial Inc | 21,096 | $5.71M | 0.01% | −4,547−17.7% | Reduced |
| McKinley Capital Management LLC /Delaware | 21,330 | $5.77M | 0.54% | 00.0% | Unchanged |
| Aviva PLC | 21,510 | $5.82M | 0.03% | +5,717+36.2% | Added |
| Carmignac Gestion | 21,781 | $5.89M | 0.07% | +1,597+7.9% | Added |
| Group One Trading, L.P. | 22,357 | $6.05M | 0.13% | +22,357 | New |
| Illinois Municipal Retirement Fund | 23,283 | $6.30M | 0.23% | 00.0% | Unchanged |
| Caisse de Depot Et Placement du Quebec | 23,952 | $6.48M | 0.01% | +19,100+393.7% | Added |
| Ravenstone Capital Management Inc. | 24,300 | $6.58M | 4.86% | +3,825+18.7% | Added |
| MetLife Investment Management | 24,334 | $6.59M | 0.06% | −950−3.8% | Reduced |
| Comerica Bank | 23,271 | $6.59M | 0.04% | −4,740−16.9% | Reduced |
| Railway Pension Investments Ltd | 24,500 | $6.63M | 0.05% | 00.0% | Unchanged |
| Millennium Management LLC | 24,992 | $6.77M | 0.01% | +14,541+139.1% | Added |
| First Trust Advisors LP | 26,710 | $7.23M | 0.01% | +22,756+575.5% | Added |
| State of Wisconsin Investment Board | 27,102 | $7.34M | 0.02% | +1,410+5.5% | Added |
| Assenagon Asset Management S.A. | 27,275 | $7.38M | 0.03% | +27,275 | New |
| Price T Rowe Associates Inc | 27,953 | $7.57M | 0.00% | +3,085+12.4% | Added |
| Voya Investment Management LLC | 28,056 | $7.59M | 0.02% | −694−2.4% | Reduced |
| HSBC Holdings PLC | 28,279 | $7.67M | 0.01% | −13,498−32.3% | Reduced |
| LPL Financial LLC | 29,006 | $7.85M | 0.01% | +2,152+8.0% | Added |
| State of New Jersey Common Pension Fund D | 29,647 | $8.03M | 0.02% | +514+1.8% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 30,632 | $8.29M | 0.11% | +4,000+15.0% | Added |
| State of Alaska, Department of Revenue | 31,837 | $8.62M | 0.09% | −2,240−6.6% | Reduced |
| Nomura Asset Management Co Ltd | 32,310 | $8.75M | 0.05% | −1,149−3.4% | Reduced |
| Banco Santander, S.A. | 33,733 | $9.13M | 0.05% | +5,500+19.5% | Added |
| Shell Asset Management Co | 33,939 | $9.19M | 0.21% | −1,900−5.3% | Reduced |
| NS Partners Ltd | 34,057 | $9.22M | 0.47% | +189+0.6% | Added |
| Gabelli Funds LLC | 35,000 | $9.47M | 0.06% | −1,000−2.8% | Reduced |
| Envestnet Asset Management Inc | 35,078 | $9.50M | 0.01% | +2,205+6.7% | Added |
| Asset Management One Co.,Ltd. | 35,784 | $9.69M | 0.04% | +13,399+59.9% | Added |
| Handelsinvest Investeringsforvaltning | 36,000 | $9.75M | 1.06% | +6,000+20.0% | Added |
| Amalgamated Bank | 36,008 | $9.75M | 0.08% | −3,751−9.4% | Reduced |
| Marshall Wace North America L.P. | 36,048 | $9.76M | 0.04% | +32,292+859.7% | Added |
| Paradigm Capital Management Inc | 37,153 | $10.1M | 0.52% | +1,600+4.5% | Added |
| Texas Permanent School Fund | 37,469 | $10.1M | 0.12% | −239−0.6% | Reduced |
| Public Employees Retirement System of Ohio | 38,077 | $10.3M | 0.04% | +9,016+31.0% | Added |
| State of Tennessee, Treasury Department | 38,823 | $10.5M | 0.04% | +16,133+71.1% | Added |
| SEI Investments Co | 39,082 | $10.6M | 0.02% | −2,434−5.9% | Reduced |
| Brewin Dolphin Wealth Management Ltd | 39,780 | $10.8M | 1.23% | +4,224+11.9% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 40,000 | $10.8M | 0.67% | 00.0% | Unchanged |
| Eaton Vance Management | 41,846 | $11.0M | 0.02% | −333−0.8% | Reduced |
| Thrivent Financial for Lutherans | 41,376 | $11.2M | 0.02% | +974+2.4% | Added |
| Forte Capital LLC | 41,499 | $11.2M | 1.52% | +3,056+7.9% | Added |
| Man Group plc | 42,129 | $11.4M | 0.04% | +18,461+78.0% | Added |
| Canada Pension Plan Investment Board | 43,139 | $11.7M | 0.01% | −11,030−20.4% | Reduced |
| Mutual of America Capital Management LLC | 44,666 | $12.1M | 0.12% | +82+0.2% | Added |
| Ensign Peak Advisors, Inc | 44,671 | $12.1M | 0.03% | +105+0.2% | Added |
| Royal Bank of Canada | 45,154 | $12.2M | 0.00% | +1,890+4.4% | Added |
| 2Xideas AG | 45,764 | $12.4M | 0.94% | +5,753+14.4% | Added |
| Two Sigma Investments, LP | 46,572 | $12.6M | 0.03% | +39,612+569.1% | Added |
| Brown Capital Management LLC | 46,902 | $12.7M | 0.10% | −337−0.7% | Reduced |
| Great West Life Assurance Co | 46,947 | $12.8M | 0.03% | +170+0.4% | Added |
| Erste Asset Management GmbH | 49,000 | $13.3M | 0.26% | +25,000+104.2% | Added |
| AQR Capital Management LLC | 51,718 | $14.0M | 0.03% | −394−0.8% | Reduced |
| Bryn Mawr Trust Co | 54,098 | $14.6M | 0.57% | −2,937−5.1% | Reduced |
| Bridgewater Associates, LP | 56,753 | $15.4M | 0.08% | −6,847−10.8% | Reduced |
| Logan Capital Management Inc | 58,170 | $15.7M | 0.73% | +77+0.1% | Added |
| Two Sigma Advisers, LP | 60,600 | $16.4M | 0.04% | +40,500+201.5% | Added |
| Bank of Montreal | 60,311 | $16.5M | 0.01% | −629−1.0% | Reduced |
| AXA S.A. | 61,197 | $16.6M | 0.05% | −36−0.1% | Reduced |
| New York State Teachers Retirement System | 61,494 | $16.6M | 0.04% | +1,914+3.2% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 63,424 | $17.2M | 0.09% | +51,431+428.8% | Added |
| State Board of Administration of Florida Retirement System | 65,769 | $17.8M | 0.03% | −1,860−2.8% | Reduced |
| Eversept Partners, LP | 67,000 | $18.1M | 1.46% | +67,000 | New |
| Barclays PLC | 67,750 | $18.3M | 0.01% | −734−1.1% | Reduced |
| Scout Investments, Inc. | 69,875 | $18.9M | 0.28% | −1,956−2.7% | Reduced |
| New York State Common Retirement Fund | 74,464 | $20.2M | 0.02% | +4,419+6.3% | Added |
| Wells Fargo & Company | 76,971 | $20.8M | 0.00% | −8,610−10.1% | Reduced |