Masimo Corp
MASIDelisted- Industry
- Electromedical & Electrotherapeutic Apparatus
- SEC CIK
- 0000937556
Masimo Corp was delisted in 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 | $7.32B |
| Q3 2025 | 358 | $8.31B |
| Q2 2025 | 379 | $9.69B |
| Q1 2025 | 393 | $9.03B |
| Q4 2024 | 366 | $8.51B |
| Q3 2024 | 362 | $6.74B |
| Q2 2024 | 352 | $6.26B |
| Q1 2024 | 339 | $7.79B |
| Q4 2023 | 342 | $6.00B |
| Q3 2023 | 357 | $4.19B |
| Q2 2023 | 415 | $7.57B |
| Q1 2023 | 428 | $9.43B |
| Q4 2022 | 405 | $6.58B |
| Q3 2022 | 419 | $6.55B |
| Q2 2022 | 417 | $5.81B |
| Q1 2022 | 457 | $6.69B |
| 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 |
|---|---|---|---|---|---|
| BlackRock Inc. | 9,351,239 | $1.18B | 0.03% | +1,470,865+18.7% | Added |
| FMR LLC | 4,785,735 | $602.7M | 0.04% | −2,191,546−31.4% | Reduced |
| Vanguard Group Inc | 4,737,351 | $596.6M | 0.01% | +181,498+4.0% | Added |
| Politan Capital Management LP | 4,714,746 | $593.8M | 36.18% | +1,2280.0% | Added |
| RTW Investments, LP | 1,462,400 | $184.2M | 2.85% | 00.0% | Unchanged |
| State Street Corp | 1,428,635 | $179.9M | 0.01% | +68,313+5.0% | Added |
| Thrivent Financial for Lutherans | 1,217,357 | $153.3M | 0.31% | +360,497+42.1% | Added |
| T. Rowe Price Investment Management, Inc. | 1,154,351 | $145.4M | 0.09% | −50,712−4.2% | Reduced |
| Westfield Capital Management Co LP | 1,131,686 | $142.5M | 0.70% | +445,586+64.9% | Added |
| Farallon Capital Management, L.L.C. | 1,119,563 | $141.0M | 0.83% | −370,000−24.8% | Reduced |
| Ace Management Global Ltd. | 1,060,919 | $133.6M | 39.24% | −108,433−9.3% | Reduced |
| Capital Research Global Investors | 1,057,136 | $133.1M | 0.03% | −1,212,110−53.4% | Reduced |
| Holocene Advisors, LP | 1,037,450 | $130.7M | 0.55% | +259,036+33.3% | Added |
| Liontrust Investment Partners LLP | 808,693 | $101.8M | 1.45% | −16,836−2.0% | Reduced |
| Geode Capital Management, LLC | 780,902 | $98.4M | 0.01% | +26,742+3.5% | Added |
| Millennium Management LLC | 753,743 | $94.9M | 0.08% | +406,727+117.2% | Added |
| Massachusetts Financial Services Co | 721,726 | $90.9M | 0.03% | −1,000,059−58.1% | Reduced |
| Point72 Asset Management, L.P. | 677,677 | $85.3M | 0.28% | +351,523+107.8% | Added |
| Schroder Investment Management Group | 528,623 | $66.6M | 0.07% | +1,287+0.2% | Added |
| Dimensional Fund Advisors LP | 525,594 | $66.2M | 0.02% | +165,257+45.9% | Added |
| Morgan Stanley | 475,803 | $59.9M | 0.00% | +4,344+0.9% | Added |
| Alyeska Investment Group, L.P. | 430,931 | $54.3M | 0.31% | +51,512+13.6% | Added |
| Ensemble Capital Management, LLC | 407,102 | $51.3M | 3.99% | +40,767+11.1% | Added |
| Charles Schwab Investment Management Inc | 393,288 | $49.5M | 0.01% | +14,913+3.9% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 391,026 | $49.2M | 0.04% | −863−0.2% | Reduced |
| Bank of New York Mellon Corp | 389,764 | $49.1M | 0.01% | −1,161−0.3% | Reduced |
| Bamco Inc | 347,200 | $43.7M | 0.13% | +1,400+0.4% | Added |
| Northern Trust Corp | 317,303 | $40.0M | 0.01% | +39,852+14.4% | Added |
| Man Group plc | 291,789 | $36.7M | 0.10% | +291,789 | New |
| Two Sigma Investments, LP | 250,956 | $31.6M | 0.07% | +250,956 | New |
| Citadel Advisors LLC | 227,490 | $28.7M | 0.03% | −1,117,726−83.1% | Reduced |
| ExodusPoint Capital Management, LP | 202,304 | $25.5M | 0.28% | +202,304 | New |
| Comerica Bank | 190,685 | $24.0M | 0.10% | +87,990+85.7% | Added |
| Woodline Partners LP | 185,990 | $23.4M | 0.22% | +132,844+250.0% | Added |
| Raymond James & Associates | 180,533 | $22.7M | 0.01% | −1,078−0.6% | Reduced |
| Principal Financial Group Inc | 148,651 | $18.7M | 0.01% | −19,097−11.4% | Reduced |
| JPMorgan Chase & Co | 148,127 | $18.7M | 0.00% | −209,931−58.6% | Reduced |
| Retirement Systems of Alabama | 144,238 | $18.2M | 0.07% | −700−0.5% | Reduced |
| Balyasny Asset Management LLC | 135,719 | $17.1M | 0.04% | −119,789−46.9% | Reduced |
| Goldman Sachs Group Inc | 135,090 | $17.0M | 0.00% | +12,637+10.3% | Added |
| Federated Hermes, Inc. | 134,261 | $16.9M | 0.04% | −21,124−13.6% | Reduced |
| Rockefeller Capital Management L.P. | 131,852 | $16.6M | 0.05% | +15,179+13.0% | Added |
| Rhumbline Advisers | 127,773 | $16.1M | 0.02% | −5,359−4.0% | Reduced |
| UBS Asset Management Americas Inc | 120,828 | $15.2M | 0.00% | +37,646+45.3% | Added |
| Nuveen Asset Management, LLC | 115,722 | $14.6M | 0.00% | +26,364+29.5% | Added |
| Bank of America Corp | 115,029 | $14.5M | 0.00% | −15,261−11.7% | Reduced |
| Two Sigma Advisers, LP | 111,600 | $14.1M | 0.03% | +110,000+6,875.0% | Added |
| Natixis | 105,816 | $13.3M | 0.08% | +105,816 | New |
| Senator Investment Group LP | 100,000 | $12.6M | 0.61% | −74,000−42.5% | Reduced |
| ING Groep NV | 99,000 | $12.5M | 0.07% | +99,000 | New |
| One Fin Capital Management LP | 95,000 | $12.0M | 4.76% | +95,000 | New |
| Marshall Wace, LLP | 94,798 | $11.9M | 0.02% | +4,591+5.1% | Added |
| Legal & General Group Plc | 93,103 | $11.7M | 0.00% | −6,670−6.7% | Reduced |
| Ameriprise Financial Inc | 91,788 | $11.6M | 0.00% | +12,907+16.4% | Added |
| Swiss National Bank | 88,500 | $11.1M | 0.01% | −100−0.1% | Reduced |
| Erste Asset Management GmbH | 85,000 | $10.7M | 0.14% | −30,000−26.1% | Reduced |
| Gamco Investors, Inc. Et Al | 84,500 | $10.6M | 0.12% | 00.0% | Unchanged |
| Invesco Ltd. | 83,051 | $10.5M | 0.00% | +4,011+5.1% | Added |
| Gotham Asset Management, LLC | 80,759 | $10.2M | 0.13% | +3,661+4.7% | Added |
| First Trust Advisors LP | 79,405 | $10.0M | 0.01% | +16,879+27.0% | Added |
| FIL Ltd | 76,147 | $9.59M | 0.01% | +2,960+4.0% | Added |
| California Public Employees Retirement System | 74,713 | $9.41M | 0.01% | +13,098+21.3% | Added |
| Susquehanna Portfolio Strategies, LLC | 71,789 | $9.04M | 0.37% | −940−1.3% | Reduced |
| Price T Rowe Associates Inc | 68,289 | $8.60M | 0.00% | −3,259−4.6% | Reduced |
| Alliancebernstein L.P. | 61,915 | $7.80M | 0.00% | +860+1.4% | Added |
| Corebridge Financial, Inc. | 56,661 | $7.14M | 0.04% | +56,661 | New |
| Montanaro Asset Management Ltd | 53,700 | $6.76M | 1.26% | −53,400−49.9% | Reduced |
| Logan Capital Management Inc | 51,045 | $6.43M | 0.28% | −68−0.1% | Reduced |
| Assenagon Asset Management S.A. | 50,740 | $6.39M | 0.02% | +43,918+643.8% | Added |
| Wells Fargo & Company | 49,948 | $6.29M | 0.00% | −17,416−25.9% | Reduced |
| Bryn Mawr Trust Co | 49,289 | $6.21M | 0.24% | −791−1.6% | Reduced |
| New York State Teachers Retirement System | 49,048 | $6.18M | 0.01% | −1,700−3.3% | Reduced |
| Norges Bank | 48,695 | $6.13M | 0.00% | +14,288+41.5% | Added |
| Citigroup Inc | 44,720 | $5.63M | 0.01% | −11,203−20.0% | Reduced |
| UBS Group AG | 43,861 | $5.52M | 0.00% | +109+0.2% | Added |
| California State Teachers Retirement System | 43,761 | $5.51M | 0.01% | −1,032−2.3% | Reduced |
| State Board of Administration of Florida Retirement System | 42,901 | $5.40M | 0.01% | −11,938−21.8% | Reduced |
| NS Partners Ltd | 42,051 | $5.30M | 0.24% | +166+0.4% | Added |
| National Bank of Canada | 44,825 | $5.22M | 0.01% | +44,825 | New |
| LMR Partners LLP | 40,354 | $5.08M | 0.11% | +40,354 | New |
| New York State Common Retirement Fund | 37,742 | $4.75M | 0.01% | +367+1.0% | Added |
| Manufacturers Life Insurance Company, The | 37,735 | $4.75M | 0.00% | −542−1.4% | Reduced |
| TD Asset Management Inc | 33,864 | $4.26M | 0.00% | −366−1.1% | Reduced |
| Gabelli Funds LLC | 33,000 | $4.16M | 0.03% | 00.0% | Unchanged |
| PEAK6 Investments LLC | 32,342 | $4.07M | 0.19% | −6,416−16.6% | Reduced |
| APG Asset Management N.V. | 33,287 | $3.91M | 0.01% | −3,382−9.2% | Reduced |
| South Dakota Investment Council | 30,611 | $3.85M | 0.08% | −36−0.1% | Reduced |
| Jane Street Group, LLC | 29,603 | $3.73M | 0.00% | +5,239+21.5% | Added |
| Campbell & CO Investment Adviser LLC | 28,750 | $3.62M | 0.31% | +25,854+892.7% | Added |
| Storebrand Asset Management AS | 28,018 | $3.53M | 0.01% | −174−0.6% | Reduced |
| HSBC Holdings PLC | 27,609 | $3.51M | 0.00% | +21,887+382.5% | Added |
| Great West Life Assurance Co | 27,414 | $3.45M | 0.01% | +1,968+7.7% | Added |
| Boothbay Fund Management, LLC | 27,391 | $3.45M | 0.10% | +25,648+1,471.5% | Added |
| Zacks Investment Management | 26,854 | $3.38M | 0.04% | +1,766+7.0% | Added |
| Royal Bank of Canada | 26,841 | $3.38M | 0.00% | +295+1.1% | Added |
| Brown Capital Management LLC | 26,811 | $3.38M | 0.07% | −33−0.1% | Reduced |
| Mutual of America Capital Management LLC | 25,532 | $3.22M | 0.04% | −915−3.5% | Reduced |
| CenterBook Partners LP | 25,293 | $3.19M | 0.20% | −16,020−38.8% | Reduced |
| Point72 Hong Kong Ltd | 25,276 | $3.18M | 0.19% | +25,276 | New |
| Pura Vida Investments, LLC | 25,000 | $3.15M | 3.81% | +25,000 | New |