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 |
|---|---|---|---|---|---|
| British Columbia Investment Management Corp | 81,656 | $22.1M | 0.13% | −77−0.1% | Reduced |
| Alliancebernstein L.P. | 82,557 | $22.3M | 0.01% | −992−1.2% | Reduced |
| Baillie Gifford & Co | 86,368 | $23.4M | 0.01% | +9,040+11.7% | Added |
| American International Group, Inc. | 87,536 | $23.7M | 0.13% | −2,659−2.9% | Reduced |
| California State Teachers Retirement System | 87,966 | $23.8M | 0.03% | −301−0.3% | Reduced |
| Gamco Investors, Inc. Et Al | 88,500 | $24.0M | 0.21% | −1,000−1.1% | Reduced |
| Parametric Portfolio Associates LLC | 95,802 | $25.9M | 0.01% | +3,340+3.6% | Added |
| Amundi | 99,428 | $26.9M | 0.02% | +3,341+3.5% | Added |
| JPMorgan Chase & Co | 100,175 | $27.1M | 0.00% | −28,514−22.2% | Reduced |
| Montanaro Asset Management Ltd | 102,950 | $27.9M | 3.36% | −250−0.2% | Reduced |
| Manufacturers Life Insurance Company, The | 116,555 | $31.6M | 0.03% | +2,324+2.0% | Added |
| Bellevue Group AG | 127,713 | $34.6M | 0.35% | 00.0% | Unchanged |
| Rhumbline Advisers | 132,626 | $35.9M | 0.05% | −2,417−1.8% | Reduced |
| Capitolis Advisors LLC | 133,512 | $37.0M | 0.34% | +30,454+29.6% | Added |
| Rockefeller Capital Management L.P. | 145,493 | $39.4M | 0.21% | +731+0.5% | Added |
| Deutsche Bank AG | 146,334 | $39.6M | 0.02% | +565+0.4% | Added |
| Alyeska Investment Group, L.P. | 147,711 | $40.0M | 0.49% | +146,246+9,982.7% | Added |
| Blue Whale Capital LLP | 147,900 | $40.0M | 3.80% | −4,000−2.6% | Reduced |
| Retirement Systems of Alabama | 154,785 | $41.9M | 0.16% | −6,135−3.8% | Reduced |
| Nuveen Asset Management, LLC | 152,900 | $42.0M | 0.01% | −32,608−17.6% | Reduced |
| Morgan Stanley | 159,486 | $43.2M | 0.01% | +71,836+82.0% | Added |
| Goldman Sachs Group Inc | 159,659 | $43.2M | 0.01% | −36,355−18.5% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 177,169 | $48.0M | 0.10% | +125,264+241.3% | Added |
| Principal Financial Group Inc | 178,483 | $48.3M | 0.03% | −634−0.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 180,777 | $48.9M | 0.06% | +8,300+4.8% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 191,354 | $51.8M | 2.87% | −290.0% | Reduced |
| Bank of America Corp | 194,148 | $52.6M | 0.01% | +9,590+5.2% | Added |
| Natixis Advisors, L.P. | 194,398 | $52.6M | 0.22% | +4,891+2.6% | Added |
| Schroder Investment Management Group | 196,632 | $53.2M | 0.09% | −93,809−32.3% | Reduced |
| Epoch Investment Partners, Inc. | 197,544 | $53.5M | 0.30% | +5,445+2.8% | Added |
| TD Asset Management Inc | 201,346 | $54.5M | 0.06% | −532−0.3% | Reduced |
| Handelsbanken Fonder AB | 206,230 | $55.8M | 0.29% | +43,800+27.0% | Added |
| Swiss National Bank | 206,614 | $55.9M | 0.04% | −7,300−3.4% | Reduced |
| UBS Group AG | 208,214 | $56.4M | 0.02% | −38,118−15.5% | Reduced |
| Dimensional Fund Advisors LP | 218,432 | $59.1M | 0.02% | −15,099−6.5% | Reduced |
| Natixis Investment Managers International | 222,845 | $60.3M | 3.50% | −395−0.2% | Reduced |
| Eagle Asset Management Inc | 236,891 | $64.1M | 0.29% | −163,832−40.9% | Reduced |
| Victory Capital Management Inc | 241,630 | $65.4M | 0.06% | +29,603+14.0% | Added |
| First Republic Investment Management, Inc. | 259,040 | $70.1M | 0.17% | +7,594+3.0% | Added |
| Korea Investment CORP | 264,974 | $71.7M | 0.21% | −15,018−5.4% | Reduced |
| UBS Asset Management Americas Inc | 268,534 | $72.7M | 0.03% | −1,215−0.5% | Reduced |
| Ensemble Capital Management, LLC | 273,407 | $74.0M | 6.02% | −50,971−15.7% | Reduced |
| APG Asset Management N.V. | 319,964 | $74.7M | 0.13% | −1,100−0.3% | Reduced |
| Citigroup Inc | 292,988 | $79.3M | 0.08% | −120,263−29.1% | Reduced |
| Charles Schwab Investment Management Inc | 293,771 | $79.5M | 0.03% | +10,765+3.8% | Added |
| Raymond James & Associates | 303,130 | $82.1M | 0.07% | −897−0.3% | Reduced |
| DF Dent & Co Inc | 324,155 | $87.8M | 0.90% | +22,498+7.5% | Added |
| Fayez Sarofim & Co | 357,890 | $96.9M | 0.32% | +57,209+19.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 364,174 | $98.6M | 0.06% | +192,323+111.9% | Added |
| California Public Employees Retirement System | 400,556 | $108.4M | 0.08% | +2,493+0.6% | Added |
| Legal & General Group Plc | 427,879 | $115.8M | 0.04% | −10,703−2.4% | Reduced |
| Norges Bank | 433,197 | $117.3M | 0.03% | +2,961+0.7% | Added |
| Fundsmith LLPSuperinvestorFundsmith | 435,010 | $117.8M | 0.33% | +1,572+0.4% | Added |
| Geneva Capital Management LLC | 438,229 | $118.6M | 2.01% | −6,603−1.5% | Reduced |
| Neuberger Berman Group LLC | 527,705 | $142.4M | 0.12% | −177,195−25.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 534,352 | $144.7M | 0.54% | +64,444+13.7% | Added |
| D1 Capital Partners L.P.SuperinvestorD1 Capital Partners | 547,298 | $148.2M | 0.83% | +547,298 | New |
| Macquarie Group Ltd | 563,759 | $152.6M | 0.13% | −3,237−0.6% | Reduced |
| Northern Trust Corp | 567,791 | $153.7M | 0.03% | +36,369+6.8% | Added |
| Wellington Management Group LLP | 613,664 | $166.1M | 0.03% | +273,728+80.5% | Added |
| Martin Currie Ltd | 622,270 | $168.5M | 5.16% | +136,676+28.1% | Added |
| Ameriprise Financial Inc | 632,005 | $171.1M | 0.05% | −28,625−4.3% | Reduced |
| Geode Capital Management, LLC | 648,822 | $175.4M | 0.02% | −3130.0% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 762,623 | $206.5M | 2.10% | −8,910−1.2% | Reduced |
| Bank of New York Mellon Corp | 766,994 | $207.6M | 0.04% | −21,627−2.7% | Reduced |
| Credit Suisse AG | 782,285 | $211.8M | 0.17% | −151,183−16.2% | Reduced |
| RTW Investments, LP | 832,540 | $225.4M | 3.40% | +6,330+0.8% | Added |
| Massachusetts Financial Services Co | 845,736 | $228.9M | 0.07% | −8,128−1.0% | Reduced |
| Champlain Investment Partners, LLC | 1,088,519 | $294.7M | 1.41% | −24,888−2.2% | Reduced |
| Invesco Ltd. | 1,158,523 | $313.6M | 0.08% | +8,613+0.7% | Added |
| State Street Corp | 1,690,331 | $457.6M | 0.02% | −8,349−0.5% | Reduced |
| Ownership Capital B.V. | 2,010,906 | $544.4M | 6.17% | +71,861+3.7% | Added |
| FMR LLC | 2,077,990 | $562.5M | 0.04% | −3,796−0.2% | Reduced |
| Vanguard Group Inc | 4,672,002 | $1.26B | 0.03% | −18,337−0.4% | Reduced |
| BlackRock Inc. | 8,893,302 | $2.41B | 0.07% | −24,811−0.3% | Reduced |
| William Blair Investment Management, LLC | 0 | $0 | 0.00% | −431,775−100.0% | Sold out |
| ArrowMark Colorado Holdings LLC | 0 | $0 | 0.00% | −125,426−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −67,819−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −14,918−100.0% | Sold out |
| Waverton Investment Management Ltd | 0 | $0 | 0.00% | −10,105−100.0% | Sold out |
| Rathbone Brothers plc | 0 | $0 | 0.00% | −6,600−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −4,405−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −4,363−100.0% | Sold out |
| Sciencast Management LP | 0 | $0 | 0.00% | −3,939−100.0% | Sold out |
| Stoneridge Investment Partners LLC | 0 | $0 | 0.00% | −3,987−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −3,458−100.0% | Sold out |
| Arthur M. Cohen & Associates, LLC | 0 | $0 | 0.00% | −3,340−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −3,156−100.0% | Sold out |
| Van Eck Associates Corp | 0 | $0 | 0.00% | −2,849−100.0% | Sold out |
| Formuepleje A/S | 0 | $0 | 0.00% | −2,440−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −2,120−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −1,970−100.0% | Sold out |
| Blair William & Co | 0 | $0 | 0.00% | −1,845−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −1,830−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −1,475−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −1,339−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −1,305−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −1,303−100.0% | Sold out |
| PRW Wealth Management LLC | 0 | $0 | 0.00% | −1,197−100.0% | Sold out |