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 2021
Institutional positions in Masimo Corp as of Dec 31, 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
- 520
- +53 vs. Q3 2021
- Shares held
- 46.4M
- +141.5K (+0.3%) vs. Q3 2021
- Total value
- $13.6B
- +$1.05B (+8.4%) vs. Q3 2021
- New holders
- 95
- 182 more added
- Sold out
- 42
- 156 more reduced
8 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Fundsmith LLPSuperinvestorFundsmith | 435,937 | $127.6M | 0.31% | +927+0.2% | Added |
| Macquarie Group Ltd | 483,002 | $141.4M | 0.12% | −80,757−14.3% | Reduced |
| D1 Capital Partners L.P.SuperinvestorD1 Capital Partners | 507,397 | $148.6M | 0.90% | −39,901−7.3% | Reduced |
| Neuberger Berman Group LLC | 516,591 | $150.7M | 0.12% | −11,114−2.1% | Reduced |
| Northern Trust Corp | 559,681 | $163.9M | 0.03% | −8,110−1.4% | Reduced |
| Martin Currie Ltd | 599,422 | $175.5M | 4.86% | −22,848−3.7% | Reduced |
| Credit Suisse AG | 634,859 | $185.9M | 0.15% | −147,426−18.8% | Reduced |
| Geode Capital Management, LLC | 662,774 | $193.8M | 0.02% | +13,952+2.2% | Added |
| Bank of New York Mellon Corp | 725,613 | $212.4M | 0.04% | −41,381−5.4% | Reduced |
| Wellington Management Group LLP | 731,937 | $214.3M | 0.03% | +118,273+19.3% | Added |
| Vaughan Nelson Investment Management, L.P. | 745,800 | $218.4M | 2.23% | −16,823−2.2% | Reduced |
| RTW Investments, LP | 849,971 | $248.9M | 3.63% | +17,431+2.1% | Added |
| Massachusetts Financial Services Co | 855,583 | $250.5M | 0.07% | +9,847+1.2% | Added |
| Champlain Investment Partners, LLC | 969,687 | $283.9M | 1.29% | −118,832−10.9% | Reduced |
| Invesco Ltd. | 1,307,606 | $382.8M | 0.09% | +149,083+12.9% | Added |
| State Street Corp | 1,703,730 | $498.8M | 0.02% | +13,399+0.8% | Added |
| Ownership Capital B.V. | 1,962,411 | $574.6M | 6.22% | −48,495−2.4% | Reduced |
| FMR LLC | 2,054,898 | $601.6M | 0.04% | −23,092−1.1% | Reduced |
| Vanguard Group Inc | 4,703,742 | $1.38B | 0.03% | +31,740+0.7% | Added |
| BlackRock Inc. | 9,026,374 | $2.64B | 0.07% | +133,072+1.5% | Added |
| Eversept Partners, LP | 0 | $0 | 0.00% | −67,000−100.0% | Sold out |
| Lombard Odier Asset Management (Switzerland) SA | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| Mandatum Life Insurance Co Ltd | 0 | $0 | 0.00% | −17,279−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −11,557−100.0% | Sold out |
| Forsta Ap-Fonden | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| AMP Capital Investors Ltd | 0 | $0 | 0.00% | −9,910−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −9,668−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −9,129−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −7,069−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −5,497−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −4,366−100.0% | Sold out |
| Seven Eight Capital, LP | 0 | $0 | 0.00% | −4,300−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −2,894−100.0% | Sold out |
| Northwest & Ethical Investments L.P. | 0 | $0 | 0.00% | −2,734−100.0% | Sold out |
| Legal Advantage Investments, Inc. | 0 | $0 | 0.00% | −2,475−100.0% | Sold out |
| Fort, L.P. | 0 | $0 | 0.00% | −2,459−100.0% | Sold out |
| Achmea Investment Management B.V. | 0 | $0 | 0.00% | −2,442−100.0% | Sold out |
| Quantamental Technologies LLC | 0 | $0 | 0.00% | −2,067−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −1,570−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −1,222−100.0% | Sold out |
| Wealthsource Partners, LLC | 0 | $0 | 0.00% | −1,212−100.0% | Sold out |
| Maverick Capital LtdSuperinvestorMaverick Capital | 0 | $0 | 0.00% | −1,048−100.0% | Sold out |
| CIBC World Markets Inc. | 0 | $0 | 0.00% | −975−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −742−100.0% | Sold out |
| Alpha Paradigm Partners, LLC | 0 | $0 | 0.00% | −567−100.0% | Sold out |
| Cullen/Frost Bankers, Inc. | 0 | $0 | 0.00% | −265−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −232−100.0% | Sold out |
| Ibex Wealth Advisors | 0 | $0 | 0.00% | −199−100.0% | Sold out |
| DuPont Capital Management Corp | 0 | $0 | 0.00% | −170−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −109−100.0% | Sold out |
| Arkadios Wealth Advisors | 0 | $0 | 0.00% | −68−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −60−100.0% | Sold out |
| Capital Advisory Group Advisory Services, LLC | 0 | $0 | 0.00% | −36−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −31−100.0% | Sold out |
| Meridian Wealth Partners, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| McCarthy Grittinger Financial Group, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| RPG Investment Advisory, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| HighMark Wealth Management LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Farmers & Merchants Investments Inc | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Carroll Financial Associates, Inc. | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| CX Institutional | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Liberty Wealth Management LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Marshall Wace North America L.P. | – | – | – | – | Not filed |
| World Asset Management Inc | – | – | – | – | Not filed |
| Alexandria Capital, LLC | – | – | – | – | Not filed |
| Cascadia Advisory Services, LLC | – | – | – | – | Not filed |
| B. Metzler seel. Sohn & Co. Holding AG | – | – | – | – | Not filed |
| BBVA USA | – | – | – | – | Not filed |
| Heritage Wealth Management, LLC | – | – | – | – | Not filed |
| Berman Capital Advisors, LLC | – | – | – | – | Not filed |