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, Q2 2024
Institutional positions in Masimo Corp as of Jun 30, 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
- 352
- +15 vs. Q1 2024
- Shares held
- 49.5M
- −2.12M (−4.1%) vs. Q1 2024
- Total value
- $6.24B
- −$1.35B (−17.8%) vs. Q1 2024
- New holders
- 56
- 117 more added
- Sold out
- 41
- 109 more reduced
2 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Marshall Wace, LLP | 94,798 | $11.9M | 0.02% | +4,591+5.1% | Added |
| One Fin Capital Management LP | 95,000 | $12.0M | 4.76% | +95,000 | New |
| ING Groep NV | 99,000 | $12.5M | 0.07% | +99,000 | New |
| Senator Investment Group LP | 100,000 | $12.6M | 0.61% | −74,000−42.5% | Reduced |
| Natixis | 105,816 | $13.3M | 0.08% | +105,816 | New |
| Two Sigma Advisers, LP | 111,600 | $14.1M | 0.03% | +110,000+6,875.0% | Added |
| Bank of America Corp | 115,029 | $14.5M | 0.00% | −15,261−11.7% | Reduced |
| Nuveen Asset Management, LLC | 115,722 | $14.6M | 0.00% | +26,364+29.5% | Added |
| UBS Asset Management Americas Inc | 120,828 | $15.2M | 0.00% | +37,646+45.3% | Added |
| Rhumbline Advisers | 127,773 | $16.1M | 0.02% | −5,359−4.0% | Reduced |
| Rockefeller Capital Management L.P. | 131,852 | $16.6M | 0.05% | +15,179+13.0% | Added |
| Federated Hermes, Inc. | 134,261 | $16.9M | 0.04% | −21,124−13.6% | Reduced |
| Goldman Sachs Group Inc | 135,090 | $17.0M | 0.00% | +12,637+10.3% | Added |
| Balyasny Asset Management LLC | 135,719 | $17.1M | 0.04% | −119,789−46.9% | Reduced |
| Retirement Systems of Alabama | 144,238 | $18.2M | 0.07% | −700−0.5% | Reduced |
| JPMorgan Chase & Co | 148,127 | $18.7M | 0.00% | −209,931−58.6% | Reduced |
| Principal Financial Group Inc | 148,651 | $18.7M | 0.01% | −19,097−11.4% | Reduced |
| Raymond James & Associates | 180,533 | $22.7M | 0.01% | −1,078−0.6% | Reduced |
| Woodline Partners LP | 185,990 | $23.4M | 0.22% | +132,844+250.0% | Added |
| Comerica Bank | 190,685 | $24.0M | 0.10% | +87,990+85.7% | Added |
| ExodusPoint Capital Management, LP | 202,304 | $25.5M | 0.28% | +202,304 | New |
| Citadel Advisors LLC | 227,490 | $28.7M | 0.03% | −1,117,726−83.1% | Reduced |
| Two Sigma Investments, LP | 250,956 | $31.6M | 0.07% | +250,956 | New |
| Man Group plc | 291,789 | $36.7M | 0.10% | +291,789 | New |
| Northern Trust Corp | 317,303 | $40.0M | 0.01% | +39,852+14.4% | Added |
| Bamco Inc | 347,200 | $43.7M | 0.13% | +1,400+0.4% | Added |
| Bank of New York Mellon Corp | 389,764 | $49.1M | 0.01% | −1,161−0.3% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 391,026 | $49.2M | 0.04% | −863−0.2% | Reduced |
| Charles Schwab Investment Management Inc | 393,288 | $49.5M | 0.01% | +14,913+3.9% | Added |
| Ensemble Capital Management, LLC | 407,102 | $51.3M | 3.99% | +40,767+11.1% | Added |
| Alyeska Investment Group, L.P. | 430,931 | $54.3M | 0.31% | +51,512+13.6% | Added |
| Morgan Stanley | 475,803 | $59.9M | 0.00% | +4,344+0.9% | Added |
| Dimensional Fund Advisors LP | 525,594 | $66.2M | 0.02% | +165,257+45.9% | Added |
| Schroder Investment Management Group | 528,623 | $66.6M | 0.07% | +1,287+0.2% | Added |
| Point72 Asset Management, L.P. | 677,677 | $85.3M | 0.28% | +351,523+107.8% | Added |
| Massachusetts Financial Services Co | 721,726 | $90.9M | 0.03% | −1,000,059−58.1% | Reduced |
| Millennium Management LLC | 753,743 | $94.9M | 0.08% | +406,727+117.2% | Added |
| Geode Capital Management, LLC | 780,902 | $98.4M | 0.01% | +26,742+3.5% | Added |
| Liontrust Investment Partners LLP | 808,693 | $101.8M | 1.45% | −16,836−2.0% | Reduced |
| Holocene Advisors, LP | 1,037,450 | $130.7M | 0.55% | +259,036+33.3% | Added |
| Capital Research Global Investors | 1,057,136 | $133.1M | 0.03% | −1,212,110−53.4% | Reduced |
| Ace Management Global Ltd. | 1,060,919 | $133.6M | 39.24% | −108,433−9.3% | Reduced |
| Farallon Capital Management, L.L.C. | 1,119,563 | $141.0M | 0.83% | −370,000−24.8% | Reduced |
| Westfield Capital Management Co LP | 1,131,686 | $142.5M | 0.70% | +445,586+64.9% | Added |
| T. Rowe Price Investment Management, Inc. | 1,154,351 | $145.4M | 0.09% | −50,712−4.2% | Reduced |
| Thrivent Financial for Lutherans | 1,217,357 | $153.3M | 0.31% | +360,497+42.1% | Added |
| State Street Corp | 1,428,635 | $179.9M | 0.01% | +68,313+5.0% | Added |
| RTW Investments, LP | 1,462,400 | $184.2M | 2.85% | 00.0% | Unchanged |
| Politan Capital Management LP | 4,714,746 | $593.8M | 36.18% | +1,2280.0% | Added |
| Vanguard Group Inc | 4,737,351 | $596.6M | 0.01% | +181,498+4.0% | Added |
| FMR LLC | 4,785,735 | $602.7M | 0.04% | −2,191,546−31.4% | Reduced |
| BlackRock Inc. | 9,351,239 | $1.18B | 0.03% | +1,470,865+18.7% | Added |
| MIG Capital, LLC | 0 | $0 | 0.00% | −381,732−100.0% | Sold out |
| Jackson Square Partners, LLC | 0 | $0 | 0.00% | −296,458−100.0% | Sold out |
| ArrowMark Colorado Holdings LLC | 0 | $0 | 0.00% | −218,810−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −59,110−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −42,196−100.0% | Sold out |
| Texas Permanent School Fund | 0 | $0 | 0.00% | −38,847−100.0% | Sold out |
| Moran Wealth Management, LLC | 0 | $0 | 0.00% | −37,380−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −35,755−100.0% | Sold out |
| British Columbia Investment Management Corp | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −13,963−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −11,225−100.0% | Sold out |
| Laurus Investment Counsel Inc. | 0 | $0 | 0.00% | −7,710−100.0% | Sold out |
| Capital Impact Advisors, LLC | 0 | $0 | 0.00% | −10,120−100.0% | Sold out |
| Linden Thomas Advisory Services, LLC | 0 | $0 | 0.00% | −8,755−100.0% | Sold out |
| Seaport Global Advisors, LLC | 0 | $0 | 0.00% | −7,109−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −5,164−100.0% | Sold out |
| Harvest Fund Management Co., Ltd | 0 | $0 | 0.00% | −3,596−100.0% | Sold out |
| Silvercrest Asset Management Group LLC | 0 | $0 | 0.00% | −2,925−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −2,578−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −1,470−100.0% | Sold out |
| Stifel Financial Corp | 0 | $0 | 0.00% | −2,397−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −2,179−100.0% | Sold out |
| GeoWealth Management, LLC | 0 | $0 | 0.00% | −2,147−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −1,979−100.0% | Sold out |
| Independent Advisor Alliance | 0 | $0 | 0.00% | −1,936−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −1,746−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −1,742−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −1,577−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −1,504−100.0% | Sold out |
| Envestnet Portfolio Solutions, Inc. | 0 | $0 | 0.00% | −1,480−100.0% | Sold out |
| CIBC Asset Management Inc | 0 | $0 | 0.00% | −1,383−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −1,037−100.0% | Sold out |
| Northwest & Ethical Investments L.P. | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Crewe Advisors LLC | 0 | $0 | 0.00% | −70−100.0% | Sold out |
| Hantz Financial Services, Inc. | 0 | $0 | 0.00% | −54−100.0% | Sold out |
| Bear Mountain Capital, Inc. | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| WFA Asset Management Corp | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Financial Synergies Wealth Advisors, Inc. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Credit Suisse AG | – | – | – | – | Not filed |
| Handelsinvest Investeringsforvaltning | – | – | – | – | Not filed |