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 2021
Institutional positions in Masimo Corp as of Dec 31, 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
- 520
- +53 vs. Q3 2021
- Shares held
- 46.4M
- +141.5K (+0.3%) vs. Q3 2021
- Total value
- $13.6B
- +$1.05B (+8.4%) vs. Q3 2021
- New holders
- 95
- 182 more added
- Sold out
- 42
- 156 more reduced
8 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 9,026,374 | $2.64B | 0.07% | +133,072+1.5% | Added |
| Vanguard Group Inc | 4,703,742 | $1.38B | 0.03% | +31,740+0.7% | Added |
| FMR LLC | 2,054,898 | $601.6M | 0.04% | −23,092−1.1% | Reduced |
| Ownership Capital B.V. | 1,962,411 | $574.6M | 6.22% | −48,495−2.4% | Reduced |
| State Street Corp | 1,703,730 | $498.8M | 0.02% | +13,399+0.8% | Added |
| Invesco Ltd. | 1,307,606 | $382.8M | 0.09% | +149,083+12.9% | Added |
| Champlain Investment Partners, LLC | 969,687 | $283.9M | 1.29% | −118,832−10.9% | Reduced |
| Massachusetts Financial Services Co | 855,583 | $250.5M | 0.07% | +9,847+1.2% | Added |
| RTW Investments, LP | 849,971 | $248.9M | 3.63% | +17,431+2.1% | Added |
| Vaughan Nelson Investment Management, L.P. | 745,800 | $218.4M | 2.23% | −16,823−2.2% | Reduced |
| Wellington Management Group LLP | 731,937 | $214.3M | 0.03% | +118,273+19.3% | Added |
| Bank of New York Mellon Corp | 725,613 | $212.4M | 0.04% | −41,381−5.4% | Reduced |
| Geode Capital Management, LLC | 662,774 | $193.8M | 0.02% | +13,952+2.2% | Added |
| Credit Suisse AG | 634,859 | $185.9M | 0.15% | −147,426−18.8% | Reduced |
| Martin Currie Ltd | 599,422 | $175.5M | 4.86% | −22,848−3.7% | Reduced |
| Northern Trust Corp | 559,681 | $163.9M | 0.03% | −8,110−1.4% | Reduced |
| Neuberger Berman Group LLC | 516,591 | $150.7M | 0.12% | −11,114−2.1% | Reduced |
| D1 Capital Partners L.P.SuperinvestorD1 Capital Partners | 507,397 | $148.6M | 0.90% | −39,901−7.3% | Reduced |
| Macquarie Group Ltd | 483,002 | $141.4M | 0.12% | −80,757−14.3% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 435,937 | $127.6M | 0.31% | +927+0.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 431,381 | $126.3M | 0.42% | −102,971−19.3% | Reduced |
| Geneva Capital Management LLC | 428,141 | $125.4M | 2.02% | −10,088−2.3% | Reduced |
| Norges Bank | 423,396 | $124.0M | 0.03% | −9,801−2.3% | Reduced |
| Ameriprise Financial Inc | 400,325 | $117.2M | 0.03% | −231,680−36.7% | Reduced |
| Legal & General Group Plc | 399,887 | $117.1M | 0.04% | −27,992−6.5% | Reduced |
| California Public Employees Retirement System | 394,036 | $115.4M | 0.08% | −6,520−1.6% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 376,335 | $110.2M | 0.07% | +12,161+3.3% | Added |
| Fayez Sarofim & Co | 354,488 | $103.8M | 0.31% | −3,402−1.0% | Reduced |
| DF Dent & Co Inc | 303,892 | $89.0M | 0.89% | −20,263−6.3% | Reduced |
| Charles Schwab Investment Management Inc | 302,420 | $88.5M | 0.03% | +8,649+2.9% | Added |
| Citigroup Inc | 292,070 | $85.5M | 0.08% | −918−0.3% | Reduced |
| Raymond James & Associates | 284,837 | $83.4M | 0.07% | −18,293−6.0% | Reduced |
| APG Asset Management N.V. | 318,864 | $82.1M | 0.14% | −1,100−0.3% | Reduced |
| UBS Asset Management Americas Inc | 269,473 | $78.9M | 0.03% | +939+0.3% | Added |
| First Republic Investment Management, Inc. | 262,080 | $76.7M | 0.17% | +3,040+1.2% | Added |
| Ensemble Capital Management, LLC | 260,419 | $76.2M | 5.72% | −12,988−4.8% | Reduced |
| Goldman Sachs Group Inc | 260,047 | $76.1M | 0.02% | +100,388+62.9% | Added |
| Korea Investment CORP | 255,532 | $74.8M | 0.19% | −9,442−3.6% | Reduced |
| Eagle Asset Management Inc | 238,353 | $70.8M | 0.31% | +1,462+0.6% | Added |
| Millennium Management LLC | 240,743 | $70.5M | 0.08% | +215,751+863.3% | Added |
| Dimensional Fund Advisors LP | 218,025 | $63.8M | 0.02% | −407−0.2% | Reduced |
| Handelsbanken Fonder AB | 214,630 | $62.8M | 0.31% | +8,400+4.1% | Added |
| UBS Group AG | 211,929 | $62.0M | 0.02% | +3,715+1.8% | Added |
| Schroder Investment Management Group | 207,066 | $60.6M | 0.08% | +10,434+5.3% | Added |
| Natixis Investment Managers International | 204,620 | $59.9M | 3.32% | −18,225−8.2% | Reduced |
| Natixis Advisors, L.P. | 199,966 | $58.5M | 0.22% | +5,568+2.9% | Added |
| TD Asset Management Inc | 199,385 | $58.4M | 0.05% | −1,961−1.0% | Reduced |
| Swiss National Bank | 198,814 | $58.2M | 0.04% | −7,800−3.8% | Reduced |
| Epoch Investment Partners, Inc. | 196,081 | $57.4M | 0.29% | −1,463−0.7% | Reduced |
| Obermeyer Wood Investment Counsel, LLLP | 194,146 | $56.8M | 3.04% | +2,792+1.5% | Added |
| JPMorgan Chase & Co | 187,685 | $55.0M | 0.01% | +87,510+87.4% | Added |
| Principal Financial Group Inc | 176,488 | $51.7M | 0.03% | −1,995−1.1% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 172,417 | $50.5M | 0.11% | −4,752−2.7% | Reduced |
| Two Sigma Advisers, LP | 162,800 | $47.7M | 0.12% | +102,200+168.6% | Added |
| Morgan Stanley | 162,669 | $47.6M | 0.01% | +3,183+2.0% | Added |
| Blue Whale Capital LLP | 159,700 | $46.8M | 3.81% | +11,800+8.0% | Added |
| Nuveen Asset Management, LLC | 158,932 | $46.5M | 0.01% | +6,032+3.9% | Added |
| Retirement Systems of Alabama | 155,727 | $45.6M | 0.16% | +942+0.6% | Added |
| Capitolis Advisors LLC | 152,375 | $44.6M | 0.27% | +18,863+14.1% | Added |
| Bank of America Corp | 151,115 | $44.2M | 0.00% | −43,033−22.2% | Reduced |
| Rockefeller Capital Management L.P. | 144,443 | $42.3M | 0.20% | −1,050−0.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 142,507 | $41.7M | 0.05% | −38,270−21.2% | Reduced |
| Rhumbline Advisers | 135,102 | $39.6M | 0.05% | +2,476+1.9% | Added |
| Bellevue Group AG | 131,376 | $38.5M | 0.40% | +3,663+2.9% | Added |
| Montanaro Asset Management Ltd | 122,150 | $35.8M | 3.61% | +19,200+18.6% | Added |
| Deutsche Bank AG | 114,522 | $33.5M | 0.02% | −31,812−21.7% | Reduced |
| Two Sigma Investments, LP | 113,319 | $33.2M | 0.08% | +66,747+143.3% | Added |
| Alyeska Investment Group, L.P. | 109,135 | $32.0M | 0.37% | −38,576−26.1% | Reduced |
| Parametric Portfolio Associates LLC | 100,739 | $29.5M | 0.02% | +4,937+5.2% | Added |
| California State Teachers Retirement System | 90,209 | $26.4M | 0.03% | +2,243+2.5% | Added |
| Baillie Gifford & Co | 89,929 | $26.3M | 0.01% | +3,561+4.1% | Added |
| Moore Capital Management, LP | 89,831 | $26.3M | 0.67% | +89,831 | New |
| Gamco Investors, Inc. Et Al | 87,500 | $25.6M | 0.22% | −1,000−1.1% | Reduced |
| American International Group, Inc. | 86,207 | $25.2M | 0.13% | −1,329−1.5% | Reduced |
| Amundi | 104,066 | $24.7M | 0.02% | +4,638+4.7% | Added |
| BNP Paribas Arbitrage, SA | 82,979 | $24.3M | 0.06% | +77,754+1,488.1% | Added |
| British Columbia Investment Management Corp | 81,186 | $23.8M | 0.13% | −470−0.6% | Reduced |
| Alliancebernstein L.P. | 80,276 | $23.5M | 0.01% | −2,281−2.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 80,000 | $23.4M | 0.04% | +80,000 | New |
| New York State Common Retirement Fund | 76,590 | $22.4M | 0.02% | +2,126+2.9% | Added |
| Toronto Dominion Bank | 75,315 | $22.1M | 0.03% | +67,937+920.8% | Added |
| First Trust Advisors LP | 73,611 | $21.6M | 0.02% | +46,901+175.6% | Added |
| Wells Fargo & Company | 72,832 | $21.3M | 0.01% | −4,139−5.4% | Reduced |
| Scout Investments, Inc. | 68,957 | $20.2M | 0.29% | −918−1.3% | Reduced |
| New York State Teachers Retirement System | 67,226 | $19.7M | 0.04% | +5,732+9.3% | Added |
| State Board of Administration of Florida Retirement System | 65,590 | $19.2M | 0.03% | −179−0.3% | Reduced |
| AXA S.A. | 63,280 | $18.5M | 0.05% | +2,083+3.4% | Added |
| Bank of Montreal | 59,595 | $17.8M | 0.01% | −716−1.2% | Reduced |
| Manufacturers Life Insurance Company, The | 57,433 | $16.8M | 0.01% | −59,122−50.7% | Reduced |
| Asset Management One Co.,Ltd. | 57,085 | $16.8M | 0.06% | +21,301+59.5% | Added |
| Citadel Advisors LLC | 56,924 | $16.7M | 0.02% | +38,669+211.8% | Added |
| Bridgewater Associates, LP | 56,836 | $16.6M | 0.10% | +83+0.1% | Added |
| Logan Capital Management Inc | 55,183 | $16.2M | 0.70% | −2,987−5.1% | Reduced |
| Erste Asset Management GmbH | 53,000 | $15.8M | 0.28% | +4,000+8.2% | Added |
| 2Xideas AG | 53,582 | $15.7M | 0.95% | +7,818+17.1% | Added |
| Bryn Mawr Trust Co | 53,286 | $15.6M | 0.56% | −812−1.5% | Reduced |
| Squarepoint Ops LLC | 51,876 | $15.2M | 0.07% | +40,272+347.1% | Added |
| AQR Capital Management LLC | 51,313 | $15.0M | 0.03% | −405−0.8% | Reduced |
| Barclays PLC | 49,290 | $14.4M | 0.01% | −18,460−27.2% | Reduced |
| Great West Life Assurance Co | 47,997 | $14.0M | 0.03% | +1,050+2.2% | Added |