Masimo Corp
MASIDelisted- Industry
- Electromedical & Electrotherapeutic Apparatus
- SEC CIK
- 0000937556
Masimo Corp was delisted in 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, Q2 2021
Institutional positions in Masimo Corp as of Jun 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
- 459
- −20 vs. Q1 2021
- Shares held
- 45.8M
- +1.39M (+3.1%) vs. Q1 2021
- Total value
- $11.1B
- +$909.0M (+8.9%) vs. Q1 2021
- New holders
- 45
- 165 more added
- Sold out
- 65
- 172 more reduced
2 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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 | $7.32B |
| Q3 2025 | 358 | $8.31B |
| Q2 2025 | 379 | $9.69B |
| Q1 2025 | 393 | $9.03B |
| Q4 2024 | 366 | $8.51B |
| Q3 2024 | 362 | $6.74B |
| Q2 2024 | 352 | $6.26B |
| Q1 2024 | 339 | $7.79B |
| Q4 2023 | 342 | $6.00B |
| Q3 2023 | 357 | $4.19B |
| Q2 2023 | 415 | $7.57B |
| Q1 2023 | 428 | $9.43B |
| Q4 2022 | 405 | $6.58B |
| Q3 2022 | 419 | $6.55B |
| Q2 2022 | 417 | $5.81B |
| Q1 2022 | 457 | $6.69B |
| Q4 2021 | 520 | $13.6B |
| Q3 2021 | 475 | $12.5B |
| Q2 2021 | 459 | $11.1B |
| Q1 2021 | 481 | $10.3B |
Institutions, Q2 2021
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 8,918,113 | $2.16B | 0.06% | +763,064+9.4% | Added |
| Vanguard Group Inc | 4,690,339 | $1.14B | 0.03% | −19,907−0.4% | Reduced |
| FMR LLC | 2,081,786 | $504.7M | 0.04% | −330,268−13.7% | Reduced |
| Ownership Capital B.V. | 1,939,045 | $470.1M | 5.47% | +47,631+2.5% | Added |
| State Street Corp | 1,698,680 | $411.8M | 0.02% | +69,274+4.3% | Added |
| Invesco Ltd. | 1,149,910 | $278.8M | 0.07% | −338,875−22.8% | Reduced |
| Champlain Investment Partners, LLC | 1,113,407 | $269.9M | 1.28% | +141,445+14.6% | Added |
| Credit Suisse AG | 933,468 | $226.3M | 0.18% | +5,961+0.6% | Added |
| Massachusetts Financial Services Co | 853,864 | $207.0M | 0.06% | −146,488−14.6% | Reduced |
| RTW Investments, LP | 826,210 | $200.3M | 3.02% | +231,254+38.9% | Added |
| Bank of New York Mellon Corp | 788,621 | $191.2M | 0.04% | −37,261−4.5% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 771,533 | $187.1M | 1.89% | +197,914+34.5% | Added |
| Neuberger Berman Group LLC | 704,900 | $170.7M | 0.15% | −90,601−11.4% | Reduced |
| Ameriprise Financial Inc | 660,630 | $160.2M | 0.05% | +83,547+14.5% | Added |
| Geode Capital Management, LLC | 649,135 | $157.1M | 0.02% | +37,507+6.1% | Added |
| Macquarie Group Ltd | 566,996 | $137.5M | 0.11% | +563,611+16,650.3% | Added |
| Northern Trust Corp | 531,422 | $128.8M | 0.02% | −2,988−0.6% | Reduced |
| Martin Currie Ltd | 485,594 | $117.7M | 4.06% | −2,713−0.6% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 469,908 | $113.9M | 0.41% | +91,012+24.0% | Added |
| Geneva Capital Management LLC | 444,832 | $107.8M | 1.76% | −8,458−1.9% | Reduced |
| Legal & General Group Plc | 438,582 | $106.3M | 0.04% | −20,498−4.5% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 433,438 | $105.1M | 0.29% | +2,375+0.6% | Added |
| William Blair Investment Management, LLC | 431,775 | $104.7M | 0.33% | −6,508−1.5% | Reduced |
| Norges Bank | 430,236 | $104.3M | 0.02% | +1,649+0.4% | Added |
| Citigroup Inc | 413,251 | $100.2M | 0.09% | +100,794+32.3% | Added |
| Eagle Asset Management Inc | 400,723 | $97.2M | 0.42% | −341−0.1% | Reduced |
| California Public Employees Retirement System | 398,063 | $96.5M | 0.07% | +6,194+1.6% | Added |
| Wellington Management Group LLP | 339,936 | $82.4M | 0.01% | +38,421+12.7% | Added |
| Ensemble Capital Management, LLC | 324,378 | $78.6M | 6.68% | +105,686+48.3% | Added |
| Raymond James & Associates | 304,027 | $73.7M | 0.07% | −4,339−1.4% | Reduced |
| DF Dent & Co Inc | 301,657 | $73.1M | 0.78% | +99,966+49.6% | Added |
| Fayez Sarofim & Co | 300,681 | $72.9M | 0.24% | +17,957+6.4% | Added |
| Schroder Investment Management Group | 290,441 | $70.4M | 0.09% | +90,060+44.9% | Added |
| Charles Schwab Investment Management Inc | 283,006 | $68.6M | 0.02% | +9,135+3.3% | Added |
| Korea Investment CORP | 279,992 | $67.9M | 0.19% | +267,892+2,214.0% | Added |
| APG Asset Management N.V. | 321,064 | $65.6M | 0.11% | +1,400+0.4% | Added |
| UBS Asset Management Americas Inc | 269,749 | $65.4M | 0.03% | +13,726+5.4% | Added |
| First Republic Investment Management, Inc. | 251,446 | $61.0M | 0.16% | +2,936+1.2% | Added |
| UBS Group AG | 246,332 | $59.7M | 0.03% | +5,732+2.4% | Added |
| Dimensional Fund Advisors LP | 233,531 | $56.6M | 0.02% | −7,718−3.2% | Reduced |
| TD Asset Management Inc | 201,878 | $55.0M | 0.06% | +9,214+4.8% | Added |
| Natixis Investment Managers International | 223,240 | $54.1M | 3.28% | +64,040+40.2% | Added |
| Swiss National Bank | 213,914 | $51.9M | 0.03% | −53,975−20.1% | Reduced |
| Victory Capital Management Inc | 212,027 | $51.4M | 0.05% | −7,389−3.4% | Reduced |
| Goldman Sachs Group Inc | 196,014 | $47.5M | 0.01% | +66,734+51.6% | Added |
| Epoch Investment Partners, Inc. | 192,099 | $46.6M | 0.25% | +3,181+1.7% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 191,383 | $46.4M | 2.58% | +3,179+1.7% | Added |
| Natixis Advisors, L.P. | 189,507 | $45.9M | 0.21% | +60,559+47.0% | Added |
| Nuveen Asset Management, LLC | 185,508 | $45.0M | 0.01% | −33,087−15.1% | Reduced |
| Bank of America Corp | 184,558 | $44.7M | 0.01% | +880.0% | Added |
| Principal Financial Group Inc | 179,117 | $43.4M | 0.03% | +1,140+0.6% | Added |
| Arrowstreet Capital, Limited Partnership | 172,477 | $41.8M | 0.05% | +56,152+48.3% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 171,851 | $41.7M | 0.02% | −11,035−6.0% | Reduced |
| Handelsbanken Fonder AB | 162,430 | $39.4M | 0.21% | +34,500+27.0% | Added |
| Retirement Systems of Alabama | 160,920 | $39.0M | 0.14% | +18,654+13.1% | Added |
| Blue Whale Capital LLP | 151,900 | $36.8M | 4.18% | +42,650+39.0% | Added |
| Deutsche Bank AG | 145,769 | $35.3M | 0.02% | +3,940+2.8% | Added |
| Rockefeller Capital Management L.P. | 144,762 | $35.1M | 0.20% | −4,972−3.3% | Reduced |
| Rhumbline Advisers | 135,043 | $32.7M | 0.04% | +1,185+0.9% | Added |
| JPMorgan Chase & Co | 128,689 | $31.2M | 0.00% | −48,774−27.5% | Reduced |
| Bellevue Group AG | 127,713 | $31.0M | 0.30% | +1,517+1.2% | Added |
| ArrowMark Colorado Holdings LLC | 125,426 | $30.4M | 0.23% | −10,602−7.8% | Reduced |
| Manufacturers Life Insurance Company, The | 114,231 | $27.7M | 0.02% | +7,361+6.9% | Added |
| Montanaro Asset Management Ltd | 103,200 | $25.0M | 3.15% | −1,300−1.2% | Reduced |
| Capitolis Advisors LLC | 103,058 | $25.0M | 0.29% | +91,700+807.4% | Added |
| Amundi | 96,087 | $23.3M | 0.02% | +96,087 | New |
| Parametric Portfolio Associates LLC | 92,462 | $22.4M | 0.01% | +57+0.1% | Added |
| American International Group, Inc. | 90,195 | $21.9M | 0.07% | −2,437−2.6% | Reduced |
| Gamco Investors, Inc. Et Al | 89,500 | $21.7M | 0.18% | −500−0.6% | Reduced |
| California State Teachers Retirement System | 88,267 | $21.4M | 0.03% | −3,124−3.4% | Reduced |
| Morgan Stanley | 87,650 | $21.3M | 0.00% | −45,409−34.1% | Reduced |
| Wells Fargo & Company | 85,581 | $20.7M | 0.00% | −51,847−37.7% | Reduced |
| Alliancebernstein L.P. | 83,549 | $20.3M | 0.01% | −2,931−3.4% | Reduced |
| British Columbia Investment Management Corp | 81,733 | $19.8M | 0.12% | +25,470+45.3% | Added |
| Baillie Gifford & Co | 77,328 | $18.7M | 0.01% | +9,230+13.6% | Added |
| Scout Investments, Inc. | 71,831 | $17.4M | 0.26% | −324−0.4% | Reduced |
| New York State Common Retirement Fund | 70,045 | $17.0M | 0.02% | +7,710+12.4% | Added |
| Barclays PLC | 68,484 | $16.6M | 0.01% | +7,538+12.4% | Added |
| Moore Capital Management, LP | 67,819 | $16.4M | 0.30% | −18,731−21.6% | Reduced |
| State Board of Administration of Florida Retirement System | 67,629 | $16.4M | 0.03% | −4,393−6.1% | Reduced |
| Bridgewater Associates, LP | 63,600 | $15.4M | 0.10% | +25,147+65.4% | Added |
| Bank of Montreal | 60,940 | $15.2M | 0.01% | −2,415−3.8% | Reduced |
| AXA S.A. | 61,233 | $14.8M | 0.04% | +2,657+4.5% | Added |
| New York State Teachers Retirement System | 59,580 | $14.4M | 0.03% | −1,200−2.0% | Reduced |
| Logan Capital Management Inc | 58,093 | $14.1M | 0.66% | +1,338+2.4% | Added |
| Bryn Mawr Trust Co | 57,035 | $13.8M | 0.53% | −9,129−13.8% | Reduced |
| Canada Pension Plan Investment Board | 54,169 | $13.1M | 0.02% | +50,702+1,462.4% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 51,905 | $12.7M | 0.03% | +11,989+30.0% | Added |
| AQR Capital Management LLC | 52,112 | $12.6M | 0.02% | +554+1.1% | Added |
| Brown Capital Management LLC | 47,239 | $11.5M | 0.09% | +574+1.2% | Added |
| Great West Life Assurance Co | 46,777 | $11.3M | 0.03% | −5,974−11.3% | Reduced |
| Mutual of America Capital Management LLC | 44,584 | $10.8M | 0.11% | −1,017−2.2% | Reduced |
| Ensign Peak Advisors, Inc | 44,566 | $10.8M | 0.02% | 00.0% | Unchanged |
| Royal Bank of Canada | 43,264 | $10.5M | 0.00% | +9,441+27.9% | Added |
| Eaton Vance Management | 42,179 | $10.2M | 0.01% | +1,302+3.2% | Added |
| HSBC Holdings PLC | 41,777 | $10.2M | 0.01% | +22,651+118.4% | Added |
| SEI Investments Co | 41,516 | $10.1M | 0.02% | −3,773−8.3% | Reduced |
| Thrivent Financial for Lutherans | 40,402 | $9.80M | 0.02% | +26,716+195.2% | Added |
| 2Xideas AG | 40,011 | $9.70M | 0.87% | +6,259+18.5% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 40,000 | $9.70M | 0.49% | 00.0% | Unchanged |