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 2026
Institutional positions in Masimo Corp as of Jun 30, 2026. 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
MASI is no longer listed, and 13F filings after Q1 2026 list far fewer holders. See Q1 2026
- Institutional holders
- 2
- −445 vs. Q1 2026
- Shares held
- 90
- −54.5M (−100.0%) vs. Q1 2026
- Total value
- $16.2K
- −$9.66B (−100.0%) vs. Q1 2026
- New holders
- 0
- 0 more added
- Sold out
- 445
- 2 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −65,203−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −65,000−100.0% | Sold out |
| Carmignac Gestion | 0 | $0 | 0.00% | −64,831−100.0% | Sold out |
| Wilson Asset Management (International) Pty Ltd | 0 | $0 | 0.00% | −63,984−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −62,545−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −61,265−100.0% | Sold out |
| Retirement Systems of Alabama | 0 | $0 | 0.00% | −55,974−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −53,287−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −49,720−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −45,917−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −45,830−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −42,851−100.0% | Sold out |
| NS Partners Ltd | 0 | $0 | 0.00% | −42,004−100.0% | Sold out |
| Vanguard Asset Management, Ltd | 0 | $0 | 0.00% | −40,876−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −39,654−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −38,820−100.0% | Sold out |
| New York State Teachers Retirement System | 0 | $0 | 0.00% | −38,569−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −37,213−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −36,420−100.0% | Sold out |
| Fortress Investment Group LLC | 0 | $0 | 0.00% | −35,900−100.0% | Sold out |
| BLI - Banque de Luxembourg Investments | 0 | $0 | 0.00% | −48,839−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −34,107−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −32,217−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −31,950−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −30,423−100.0% | Sold out |
| Taconic Capital Advisors LP | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Vestcor Inc | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Tokio Marine Asset Management Co Ltd | 0 | $0 | 0.00% | −29,400−100.0% | Sold out |
| Storebrand Asset Management AS | 0 | $0 | 0.00% | −27,714−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −27,425−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −26,443−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −25,495−100.0% | Sold out |
| TPG GP A, LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −24,485−100.0% | Sold out |
| Westmount Partners, LLC | 0 | $0 | 0.00% | −24,232−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −24,160−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −23,713−100.0% | Sold out |
| Manufacturers Life Insurance Company, The | 0 | $0 | 0.00% | −23,637−100.0% | Sold out |
| Abc Arbitrage SA | 0 | $0 | 0.00% | −23,604−100.0% | Sold out |
| Credit Industriel Et Commercial | 0 | $0 | 0.00% | −23,050−100.0% | Sold out |
| Creative Planning | 0 | $0 | 0.00% | −22,920−100.0% | Sold out |
| Capricorn Fund Managers Ltd | 0 | $0 | 0.00% | −22,811−100.0% | Sold out |
| Quantinno Capital Management LP | 0 | $0 | 0.00% | −22,501−100.0% | Sold out |
| New York Life Investment Management LLC | 0 | $0 | 0.00% | −22,191−100.0% | Sold out |
| Cardinal Capital Management | 0 | $0 | 0.00% | −22,132−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −21,832−100.0% | Sold out |
| ING Groep NV | 0 | $0 | 0.00% | −21,700−100.0% | Sold out |
| Liontrust Investment Partners LLP | 0 | $0 | 0.00% | −20,138−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −19,789−100.0% | Sold out |
| Police & Firemen's Retirement System of New Jersey | 0 | $0 | 0.00% | −19,484−100.0% | Sold out |
| Treasurer of the State of North Carolina | 0 | $0 | 0.00% | −19,294−100.0% | Sold out |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 0 | $0 | 0.00% | −18,940−100.0% | Sold out |
| Vanguard Global Advisers, LLC | 0 | $0 | 0.00% | −18,433−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −18,139−100.0% | Sold out |
| South Dakota Investment Council | 0 | $0 | 0.00% | −17,568−100.0% | Sold out |
| Mutual of America Capital Management LLC | 0 | $0 | 0.00% | −17,496−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −16,320−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −16,300−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −15,979−100.0% | Sold out |
| P Schoenfeld Asset Management LP | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −14,771−100.0% | Sold out |
| Brown Advisory Inc | 0 | $0 | 0.00% | −14,734−100.0% | Sold out |
| Handelsbanken Fonder AB | 0 | $0 | 0.00% | −14,730−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −16,837−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −14,216−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −14,192−100.0% | Sold out |
| Empower Advisory Group, LLC | 0 | $0 | 0.00% | −14,105−100.0% | Sold out |
| State of Tennessee, Treasury Department | 0 | $0 | 0.00% | −13,918−100.0% | Sold out |
| Yousif Capital Management, LLC | 0 | $0 | 0.00% | −13,868−100.0% | Sold out |
| Public Employees Retirement System of Ohio | 0 | $0 | 0.00% | −13,446−100.0% | Sold out |
| Louisiana State Employees Retirement System | 0 | $0 | 0.00% | −13,200−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −13,195−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −12,978−100.0% | Sold out |
| Envestnet Asset Management Inc | 0 | $0 | 0.00% | −12,596−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −12,541−100.0% | Sold out |
| Alpine Global Management, LLC | 0 | $0 | 0.00% | −12,500−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −12,202−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −12,140−100.0% | Sold out |
| Advisors Asset Management, Inc. | 0 | $0 | 0.00% | −12,080−100.0% | Sold out |
| Mint Tower Capital Management B.V. | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Fifth Third Bancorp | 0 | $0 | 0.00% | −11,736−100.0% | Sold out |
| Vanguard Investments Australia, Ltd. | 0 | $0 | 0.00% | −11,498−100.0% | Sold out |
| Paradigm Capital Management Inc | 0 | $0 | 0.00% | −11,353−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −11,337−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −11,269−100.0% | Sold out |
| Harvest Management LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| State of Michigan Retirement System | 0 | $0 | 0.00% | −10,996−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −10,993−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −10,900−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −10,628−100.0% | Sold out |
| Lockerman Financial Group, Inc. | 0 | $0 | 0.00% | −10,500−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −10,251−100.0% | Sold out |
| Northwestern Mutual Investment Management Company, LLC | 0 | $0 | 0.00% | −10,228−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −10,187−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −10,020−100.0% | Sold out |
| Xponance, Inc. | 0 | $0 | 0.00% | −9,958−100.0% | Sold out |
| New Mexico Educational Retirement Board | 0 | $0 | 0.00% | −9,900−100.0% | Sold out |
| Oregon Public Employees Retirement Fund | 0 | $0 | 0.00% | −9,374−100.0% | Sold out |
| Bellevue Group AG | 0 | $0 | 0.00% | −8,753−100.0% | Sold out |