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, Q1 2025
Institutional positions in Masimo Corp as of Mar 31, 2025. 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
- 393
- +31 vs. Q4 2024
- Shares held
- 54.2M
- +2.83M (+5.5%) vs. Q4 2024
- Total value
- $9.02B
- +$532.2M (+6.3%) vs. Q4 2024
- New holders
- 77
- 136 more added
- Sold out
- 46
- 118 more reduced
4 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Abn Amro Investment Solutions | 0 | $0 | 0.00% | −18,473−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −10,657−100.0% | Sold out |
| Lecap Asset Management Ltd | 0 | $0 | 0.00% | −9,720−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −8,033−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −6,452−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −6,310−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −5,897−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −5,494−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −4,500−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −4,410−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −3,587−100.0% | Sold out |
| Farringdon Capital, Ltd. | 0 | $0 | 0.00% | −3,217−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −3,196−100.0% | Sold out |
| DAFNA Capital Management LLC | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| AE Wealth Management LLC | 0 | $0 | 0.00% | −2,852−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −2,162−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −2,139−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −2,083−100.0% | Sold out |
| Crestline Management, LP | 0 | $0 | 0.00% | −1,800−100.0% | Sold out |
| Perissos Private Wealth Management, LLC | 0 | $0 | 0.00% | −1,700−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −1,792−100.0% | Sold out |
| Envestnet Portfolio Solutions, Inc. | 0 | $0 | 0.00% | −1,505−100.0% | Sold out |
| Brown Capital Management LLC | 0 | $0 | 0.00% | −1,481−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −1,478−100.0% | Sold out |
| Trust Point Inc. | 0 | $0 | 0.00% | −1,390−100.0% | Sold out |
| Pacific Point Advisors, LLC | 0 | $0 | 0.00% | −1,184−100.0% | Sold out |
| BI Asset Management Fondsmaeglerselskab A/S | 0 | $0 | 0.00% | −985−100.0% | Sold out |
| Kohmann Bosshard Financial Services, LLC | 0 | $0 | 0.00% | −408−100.0% | Sold out |
| Trust Co of Vermont | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −181−100.0% | Sold out |
| Y.D. More Investments Ltd | 0 | $0 | 0.00% | −120−100.0% | Sold out |
| LGT Financial Advisors LLC | 0 | $0 | 0.00% | −114−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −113−100.0% | Sold out |
| Center for Financial Planning, Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Continuum Advisory, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Hilltop National Bank | – | – | – | – | Not filed |
| Kiely Wealth Advisory Group, Inc. | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |