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 |
|---|---|---|---|---|---|
| BlackRock Inc. | 8,893,302 | $2.41B | 0.07% | −24,811−0.3% | Reduced |
| Vanguard Group Inc | 4,672,002 | $1.26B | 0.03% | −18,337−0.4% | Reduced |
| FMR LLC | 2,077,990 | $562.5M | 0.04% | −3,796−0.2% | Reduced |
| Ownership Capital B.V. | 2,010,906 | $544.4M | 6.17% | +71,861+3.7% | Added |
| State Street Corp | 1,690,331 | $457.6M | 0.02% | −8,349−0.5% | Reduced |
| Invesco Ltd. | 1,158,523 | $313.6M | 0.08% | +8,613+0.7% | Added |
| Champlain Investment Partners, LLC | 1,088,519 | $294.7M | 1.41% | −24,888−2.2% | Reduced |
| Massachusetts Financial Services Co | 845,736 | $228.9M | 0.07% | −8,128−1.0% | Reduced |
| RTW Investments, LP | 832,540 | $225.4M | 3.40% | +6,330+0.8% | Added |
| Credit Suisse AG | 782,285 | $211.8M | 0.17% | −151,183−16.2% | Reduced |
| Bank of New York Mellon Corp | 766,994 | $207.6M | 0.04% | −21,627−2.7% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 762,623 | $206.5M | 2.10% | −8,910−1.2% | Reduced |
| Geode Capital Management, LLC | 648,822 | $175.4M | 0.02% | −3130.0% | Reduced |
| Ameriprise Financial Inc | 632,005 | $171.1M | 0.05% | −28,625−4.3% | Reduced |
| Martin Currie Ltd | 622,270 | $168.5M | 5.16% | +136,676+28.1% | Added |
| Wellington Management Group LLP | 613,664 | $166.1M | 0.03% | +273,728+80.5% | Added |
| Northern Trust Corp | 567,791 | $153.7M | 0.03% | +36,369+6.8% | Added |
| Macquarie Group Ltd | 563,759 | $152.6M | 0.13% | −3,237−0.6% | Reduced |
| D1 Capital Partners L.P.SuperinvestorD1 Capital Partners | 547,298 | $148.2M | 0.83% | +547,298 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 534,352 | $144.7M | 0.54% | +64,444+13.7% | Added |
| Neuberger Berman Group LLC | 527,705 | $142.4M | 0.12% | −177,195−25.1% | Reduced |
| Geneva Capital Management LLC | 438,229 | $118.6M | 2.01% | −6,603−1.5% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 435,010 | $117.8M | 0.33% | +1,572+0.4% | Added |
| Norges Bank | 433,197 | $117.3M | 0.03% | +2,961+0.7% | Added |
| Legal & General Group Plc | 427,879 | $115.8M | 0.04% | −10,703−2.4% | Reduced |
| California Public Employees Retirement System | 400,556 | $108.4M | 0.08% | +2,493+0.6% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 364,174 | $98.6M | 0.06% | +192,323+111.9% | Added |
| Fayez Sarofim & Co | 357,890 | $96.9M | 0.32% | +57,209+19.0% | Added |
| DF Dent & Co Inc | 324,155 | $87.8M | 0.90% | +22,498+7.5% | Added |
| Raymond James & Associates | 303,130 | $82.1M | 0.07% | −897−0.3% | Reduced |
| Charles Schwab Investment Management Inc | 293,771 | $79.5M | 0.03% | +10,765+3.8% | Added |
| Citigroup Inc | 292,988 | $79.3M | 0.08% | −120,263−29.1% | Reduced |
| APG Asset Management N.V. | 319,964 | $74.7M | 0.13% | −1,100−0.3% | Reduced |
| Ensemble Capital Management, LLC | 273,407 | $74.0M | 6.02% | −50,971−15.7% | Reduced |
| UBS Asset Management Americas Inc | 268,534 | $72.7M | 0.03% | −1,215−0.5% | Reduced |
| Korea Investment CORP | 264,974 | $71.7M | 0.21% | −15,018−5.4% | Reduced |
| First Republic Investment Management, Inc. | 259,040 | $70.1M | 0.17% | +7,594+3.0% | Added |
| Victory Capital Management Inc | 241,630 | $65.4M | 0.06% | +29,603+14.0% | Added |
| Eagle Asset Management Inc | 236,891 | $64.1M | 0.29% | −163,832−40.9% | Reduced |
| Natixis Investment Managers International | 222,845 | $60.3M | 3.50% | −395−0.2% | Reduced |
| Dimensional Fund Advisors LP | 218,432 | $59.1M | 0.02% | −15,099−6.5% | Reduced |
| UBS Group AG | 208,214 | $56.4M | 0.02% | −38,118−15.5% | Reduced |
| Swiss National Bank | 206,614 | $55.9M | 0.04% | −7,300−3.4% | Reduced |
| Handelsbanken Fonder AB | 206,230 | $55.8M | 0.29% | +43,800+27.0% | Added |
| TD Asset Management Inc | 201,346 | $54.5M | 0.06% | −532−0.3% | Reduced |
| Epoch Investment Partners, Inc. | 197,544 | $53.5M | 0.30% | +5,445+2.8% | Added |
| Schroder Investment Management Group | 196,632 | $53.2M | 0.09% | −93,809−32.3% | Reduced |
| Natixis Advisors, L.P. | 194,398 | $52.6M | 0.22% | +4,891+2.6% | Added |
| Bank of America Corp | 194,148 | $52.6M | 0.01% | +9,590+5.2% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 191,354 | $51.8M | 2.87% | −290.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 180,777 | $48.9M | 0.06% | +8,300+4.8% | Added |
| Principal Financial Group Inc | 178,483 | $48.3M | 0.03% | −634−0.4% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 177,169 | $48.0M | 0.10% | +125,264+241.3% | Added |
| Goldman Sachs Group Inc | 159,659 | $43.2M | 0.01% | −36,355−18.5% | Reduced |
| Morgan Stanley | 159,486 | $43.2M | 0.01% | +71,836+82.0% | Added |
| Nuveen Asset Management, LLC | 152,900 | $42.0M | 0.01% | −32,608−17.6% | Reduced |
| Retirement Systems of Alabama | 154,785 | $41.9M | 0.16% | −6,135−3.8% | Reduced |
| Blue Whale Capital LLP | 147,900 | $40.0M | 3.80% | −4,000−2.6% | Reduced |
| Alyeska Investment Group, L.P. | 147,711 | $40.0M | 0.49% | +146,246+9,982.7% | Added |
| Deutsche Bank AG | 146,334 | $39.6M | 0.02% | +565+0.4% | Added |
| Rockefeller Capital Management L.P. | 145,493 | $39.4M | 0.21% | +731+0.5% | Added |
| Capitolis Advisors LLC | 133,512 | $37.0M | 0.34% | +30,454+29.6% | Added |
| Rhumbline Advisers | 132,626 | $35.9M | 0.05% | −2,417−1.8% | Reduced |
| Bellevue Group AG | 127,713 | $34.6M | 0.35% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 116,555 | $31.6M | 0.03% | +2,324+2.0% | Added |
| Montanaro Asset Management Ltd | 102,950 | $27.9M | 3.36% | −250−0.2% | Reduced |
| JPMorgan Chase & Co | 100,175 | $27.1M | 0.00% | −28,514−22.2% | Reduced |
| Amundi | 99,428 | $26.9M | 0.02% | +3,341+3.5% | Added |
| Parametric Portfolio Associates LLC | 95,802 | $25.9M | 0.01% | +3,340+3.6% | Added |
| Gamco Investors, Inc. Et Al | 88,500 | $24.0M | 0.21% | −1,000−1.1% | Reduced |
| California State Teachers Retirement System | 87,966 | $23.8M | 0.03% | −301−0.3% | Reduced |
| American International Group, Inc. | 87,536 | $23.7M | 0.13% | −2,659−2.9% | Reduced |
| Baillie Gifford & Co | 86,368 | $23.4M | 0.01% | +9,040+11.7% | Added |
| Alliancebernstein L.P. | 82,557 | $22.3M | 0.01% | −992−1.2% | Reduced |
| British Columbia Investment Management Corp | 81,656 | $22.1M | 0.13% | −77−0.1% | Reduced |
| Wells Fargo & Company | 76,971 | $20.8M | 0.00% | −8,610−10.1% | Reduced |
| New York State Common Retirement Fund | 74,464 | $20.2M | 0.02% | +4,419+6.3% | Added |
| Scout Investments, Inc. | 69,875 | $18.9M | 0.28% | −1,956−2.7% | Reduced |
| Barclays PLC | 67,750 | $18.3M | 0.01% | −734−1.1% | Reduced |
| Eversept Partners, LP | 67,000 | $18.1M | 1.46% | +67,000 | New |
| State Board of Administration of Florida Retirement System | 65,769 | $17.8M | 0.03% | −1,860−2.8% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 63,424 | $17.2M | 0.09% | +51,431+428.8% | Added |
| New York State Teachers Retirement System | 61,494 | $16.6M | 0.04% | +1,914+3.2% | Added |
| AXA S.A. | 61,197 | $16.6M | 0.05% | −36−0.1% | Reduced |
| Bank of Montreal | 60,311 | $16.5M | 0.01% | −629−1.0% | Reduced |
| Two Sigma Advisers, LP | 60,600 | $16.4M | 0.04% | +40,500+201.5% | Added |
| Logan Capital Management Inc | 58,170 | $15.7M | 0.73% | +77+0.1% | Added |
| Bridgewater Associates, LP | 56,753 | $15.4M | 0.08% | −6,847−10.8% | Reduced |
| Bryn Mawr Trust Co | 54,098 | $14.6M | 0.57% | −2,937−5.1% | Reduced |
| AQR Capital Management LLC | 51,718 | $14.0M | 0.03% | −394−0.8% | Reduced |
| Erste Asset Management GmbH | 49,000 | $13.3M | 0.26% | +25,000+104.2% | Added |
| Great West Life Assurance Co | 46,947 | $12.8M | 0.03% | +170+0.4% | Added |
| Brown Capital Management LLC | 46,902 | $12.7M | 0.10% | −337−0.7% | Reduced |
| Two Sigma Investments, LP | 46,572 | $12.6M | 0.03% | +39,612+569.1% | Added |
| 2Xideas AG | 45,764 | $12.4M | 0.94% | +5,753+14.4% | Added |
| Royal Bank of Canada | 45,154 | $12.2M | 0.00% | +1,890+4.4% | Added |
| Ensign Peak Advisors, Inc | 44,671 | $12.1M | 0.03% | +105+0.2% | Added |
| Mutual of America Capital Management LLC | 44,666 | $12.1M | 0.12% | +82+0.2% | Added |
| Canada Pension Plan Investment Board | 43,139 | $11.7M | 0.01% | −11,030−20.4% | Reduced |
| Man Group plc | 42,129 | $11.4M | 0.04% | +18,461+78.0% | Added |