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 2024
Institutional positions in Masimo Corp as of Dec 31, 2024. 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
- 366
- +12 vs. Q3 2024
- Shares held
- 51.4M
- +1.55M (+3.1%) vs. Q3 2024
- Total value
- $8.50B
- +$1.86B (+28.0%) vs. Q3 2024
- New holders
- 62
- 117 more added
- Sold out
- 50
- 119 more reduced
8 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2024: 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 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | 51,457 | $8.51M | 0.01% | +14,931+40.9% | Added |
| Federated Hermes, Inc. | 52,734 | $8.72M | 0.02% | −65,881−55.5% | Reduced |
| Barclays PLC | 53,219 | $8.80M | 0.00% | +13,262+33.2% | Added |
| Retirement Systems of Alabama | 54,035 | $8.93M | 0.03% | −60,225−52.7% | Reduced |
| Walleye Capital LLC | 54,938 | $9.08M | 0.09% | +10,063+22.4% | Added |
| Point72 (DIFC) Ltd | 58,417 | $9.66M | 0.87% | +58,417 | New |
| Man Group plc | 64,889 | $10.7M | 0.03% | −335,056−83.8% | Reduced |
| California Public Employees Retirement System | 70,229 | $11.6M | 0.01% | −3,084−4.2% | Reduced |
| Nuveen Asset Management, LLC | 75,754 | $12.5M | 0.00% | −7,973−9.5% | Reduced |
| Erste Asset Management GmbH | 82,652 | $13.9M | 0.17% | +27,652+50.3% | Added |
| Gamco Investors, Inc. Et Al | 84,500 | $14.0M | 0.15% | 00.0% | Unchanged |
| TD Asset Management Inc | 84,640 | $14.0M | 0.01% | +38,332+82.8% | Added |
| Toroso Investments, LLC | 86,731 | $14.3M | 0.12% | +84,342+3,530.4% | Added |
| Catalio Capital Management, LP | 87,377 | $14.4M | 3.16% | +87,377 | New |
| Swiss National Bank | 89,400 | $14.8M | 0.01% | +1,100+1.2% | Added |
| Rockefeller Capital Management L.P. | 90,901 | $15.0M | 0.04% | −46,492−33.8% | Reduced |
| Citigroup Inc | 91,691 | $15.2M | 0.01% | +29,603+47.7% | Added |
| Great Lakes Advisors, LLC | 95,730 | $15.8M | 0.14% | +95,730 | New |
| Legal & General Group Plc | 97,187 | $16.1M | 0.00% | +3,122+3.3% | Added |
| Principal Financial Group Inc | 102,660 | $17.0M | 0.01% | +153+0.1% | Added |
| BLI - Banque de Luxembourg Investments | 101,200 | $17.1M | 0.46% | +101,200 | New |
| Bank of America Corp | 107,303 | $17.7M | 0.00% | −10,542−8.9% | Reduced |
| FIL Ltd | 110,332 | $18.2M | 0.02% | +4,624+4.4% | Added |
| Amundi | 111,481 | $18.8M | 0.01% | +87,446+363.8% | Added |
| Rhumbline Advisers | 124,373 | $20.6M | 0.02% | −2,641−2.1% | Reduced |
| Gotham Asset Management, LLC | 127,780 | $21.1M | 0.20% | −25,706−16.7% | Reduced |
| JPMorgan Chase & Co | 128,639 | $21.3M | 0.00% | −27,214−17.5% | Reduced |
| Neuberger Berman Group LLC | 138,122 | $22.8M | 0.02% | +133,825+3,114.4% | Added |
| Comerica Bank | 141,378 | $23.4M | 0.09% | −103,703−42.3% | Reduced |
| UBS Group AG | 160,028 | $26.5M | 0.01% | +105,346+192.7% | Added |
| UBS Asset Management Americas Inc | 190,246 | $31.4M | 0.01% | +77,775+69.2% | Added |
| Goldman Sachs Group Inc | 202,252 | $33.4M | 0.01% | −129,824−39.1% | Reduced |
| Raymond James Financial Inc | 203,971 | $33.7M | 0.01% | +203,971 | New |
| Ameriprise Financial Inc | 215,946 | $35.7M | 0.01% | +16,085+8.0% | Added |
| Assenagon Asset Management S.A. | 216,051 | $35.7M | 0.06% | +194,788+916.1% | Added |
| Cramer Rosenthal McGlynn LLC | 222,817 | $36.8M | 2.08% | +37,800+20.4% | Added |
| Point72 Asset Management, L.P. | 248,499 | $41.1M | 0.11% | +248,499 | New |
| Price T Rowe Associates Inc | 250,786 | $41.5M | 0.00% | +181,070+259.7% | Added |
| Invesco Ltd. | 277,960 | $45.9M | 0.01% | +192,802+226.4% | Added |
| Bamco Inc | 307,144 | $50.8M | 0.13% | −40,056−11.5% | Reduced |
| Bank of New York Mellon Corp | 337,221 | $55.7M | 0.01% | −4,739−1.4% | Reduced |
| CI Private Wealth, LLC | 347,683 | $57.5M | 0.10% | +343,797+8,847.1% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 373,705 | $61.8M | 0.04% | +1,522+0.4% | Added |
| Charles Schwab Investment Management Inc | 377,836 | $62.5M | 0.01% | +7,808+2.1% | Added |
| Northern Trust Corp | 383,869 | $63.5M | 0.01% | +82,828+27.5% | Added |
| Farallon Capital Management, L.L.C. | 397,000 | $65.6M | 0.35% | −861,563−68.5% | Reduced |
| Millennium Management LLC | 408,058 | $67.5M | 0.06% | +378,805+1,294.9% | Added |
| Citadel Advisors LLC | 441,025 | $72.9M | 0.07% | +251,476+132.7% | Added |
| Schroder Investment Management Group | 566,469 | $95.5M | 0.09% | −166,152−22.7% | Reduced |
| Alyeska Investment Group, L.P. | 578,635 | $95.6M | 0.36% | −166,492−22.3% | Reduced |
| Dimensional Fund Advisors LP | 647,720 | $107.1M | 0.03% | +50,022+8.4% | Added |
| RTW Investments, LP | 683,294 | $112.9M | 1.71% | −779,106−53.3% | Reduced |
| Morgan Stanley | 737,841 | $122.0M | 0.01% | +985+0.1% | Added |
| Westfield Capital Management Co LP | 768,858 | $127.1M | 0.55% | −625,198−44.8% | Reduced |
| Liontrust Investment Partners LLP | 792,935 | $131.1M | 1.90% | −15,758−1.9% | Reduced |
| Geode Capital Management, LLC | 801,125 | $132.5M | 0.01% | +8,239+1.0% | Added |
| Holocene Advisors, LP | 835,660 | $138.1M | 0.45% | −39,499−4.5% | Reduced |
| Alliancebernstein L.P. | 947,391 | $156.6M | 0.05% | +878,587+1,276.9% | Added |
| State Street Corp | 1,463,466 | $241.9M | 0.01% | +24,652+1.7% | Added |
| T. Rowe Price Investment Management, Inc. | 1,662,376 | $274.8M | 0.17% | +135,888+8.9% | Added |
| Massachusetts Financial Services Co | 1,735,167 | $286.8M | 0.09% | +943,001+119.0% | Added |
| Capital Research Global Investors | 2,454,975 | $405.8M | 0.08% | +1,094,647+80.5% | Added |
| Vanguard Group Inc | 4,586,702 | $758.2M | 0.01% | +66,215+1.5% | Added |
| Politan Capital Management LP | 4,714,746 | $779.3M | 50.51% | 00.0% | Unchanged |
| FMR LLC | 8,097,454 | $1.34B | 0.08% | +1,340,836+19.8% | Added |
| BlackRock, Inc. | 8,698,213 | $1.44B | 0.03% | −124,056−1.4% | Reduced |
| ING Groep NV | 0 | $0 | 0.00% | −240,900−100.0% | Sold out |
| Clearline Capital LP | 0 | $0 | 0.00% | −160,029−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −132,500−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −94,416−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −53,726−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −53,226−100.0% | Sold out |
| Bank of Nova Scotia | 0 | $0 | 0.00% | −35,438−100.0% | Sold out |
| Roubaix Capital, LLC | 0 | $0 | 0.00% | −34,041−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −33,995−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −28,967−100.0% | Sold out |
| Troluce Capital Advisors LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −24,358−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −19,139−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −17,157−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −15,456−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −11,133−100.0% | Sold out |
| Teza Capital Management LLC | 0 | $0 | 0.00% | −10,919−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −10,449−100.0% | Sold out |
| Shay Capital LLC | 0 | $0 | 0.00% | −10,150−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −9,980−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −9,591−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −8,230−100.0% | Sold out |
| Lombard Odier Asset Management (USA) Corp | 0 | $0 | 0.00% | −7,171−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −7,169−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −5,668−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −5,087−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −4,483−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −3,894−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −3,893−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −2,964−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −2,115−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −1,965−100.0% | Sold out |
| Kapitalo Investimentos Ltda | 0 | $0 | 0.00% | −1,815−100.0% | Sold out |
| Stifel Financial Corp | 0 | $0 | 0.00% | −1,716−100.0% | Sold out |