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 2025
Institutional positions in Masimo Corp as of Jun 30, 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
- 379
- −11 vs. Q1 2025
- Shares held
- 57.5M
- +3.35M (+6.2%) vs. Q1 2025
- Total value
- $9.68B
- +$653.6M (+7.2%) vs. Q1 2025
- New holders
- 46
- 127 more added
- Sold out
- 57
- 136 more reduced
3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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 2025
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State Board of Administration of Florida Retirement System | 43,319 | $7.29M | 0.01% | +548+1.3% | Added |
| California State Teachers Retirement System | 43,353 | $7.29M | 0.01% | +101+0.2% | Added |
| Picton Mahoney Asset Management | 44,557 | $7.49M | 0.11% | +405+0.9% | Added |
| 4D Advisors, LLC | 45,000 | $7.57M | 4.07% | +15,000+50.0% | Added |
| Natixis | 45,648 | $7.68M | 0.04% | +45,648 | New |
| Cinctive Capital Management LP | 46,787 | $7.87M | 0.44% | +46,787 | New |
| Citigroup Inc | 49,962 | $8.40M | 0.01% | −2,196−4.2% | Reduced |
| AQR Capital Management LLC | 50,256 | $8.45M | 0.01% | +42,114+517.2% | Added |
| Bank of Nova Scotia | 53,108 | $8.93M | 0.02% | −40,095−43.0% | Reduced |
| Retirement Systems of Alabama | 55,003 | $9.25M | 0.03% | +916+1.7% | Added |
| STRS Ohio | 55,983 | $9.42M | 0.04% | +15,848+39.5% | Added |
| Barclays PLC | 56,114 | $9.44M | 0.00% | +16,261+40.8% | Added |
| FIL Ltd | 56,326 | $9.48M | 0.01% | −113,462−66.8% | Reduced |
| Manufacturers Life Insurance Company, The | 58,714 | $9.88M | 0.01% | +4,814+8.9% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 65,821 | $11.1M | 0.03% | +65,821 | New |
| Point72 (DIFC) Ltd | 68,700 | $11.6M | 0.92% | +27,061+65.0% | Added |
| California Public Employees Retirement System | 72,807 | $12.2M | 0.01% | +2,932+4.2% | Added |
| Swedbank AB | 73,800 | $12.4M | 0.01% | +73,800 | New |
| Squarepoint Ops LLC | 74,027 | $12.5M | 0.03% | +57,359+344.1% | Added |
| Great Lakes Advisors, LLC | 82,348 | $13.9M | 0.12% | −10,524−11.3% | Reduced |
| Gamco Investors, Inc. Et Al | 84,500 | $14.2M | 0.14% | 00.0% | Unchanged |
| BLI - Banque de Luxembourg Investments | 86,700 | $14.6M | 0.42% | −14,500−14.3% | Reduced |
| Swiss National Bank | 87,700 | $14.8M | 0.01% | −500−0.6% | Reduced |
| Bellevue Group AG | 89,673 | $15.1M | 0.33% | +19,865+28.5% | Added |
| Erste Asset Management GmbH | 92,000 | $15.5M | 0.13% | 00.0% | Unchanged |
| PFM Health Sciences, LP | 94,451 | $15.9M | 1.38% | +94,451 | New |
| Cramer Rosenthal McGlynn LLC | 94,939 | $16.0M | 1.10% | −56,725−37.4% | Reduced |
| First Trust Advisors LP | 99,612 | $16.8M | 0.01% | −45,552−31.4% | Reduced |
| Falcon Edge Capital, LP | 102,068 | $17.2M | 1.85% | +102,068 | New |
| Principal Financial Group Inc | 102,467 | $17.2M | 0.01% | −194−0.2% | Reduced |
| Legal & General Group Plc | 104,364 | $17.6M | 0.00% | +4,822+4.8% | Added |
| Toroso Investments, LLC | 106,198 | $17.9M | 0.12% | −4,288−3.9% | Reduced |
| Royal Bank of Canada | 109,690 | $18.5M | 0.00% | +65,806+150.0% | Added |
| Rockefeller Capital Management L.P. | 115,626 | $19.5M | 0.04% | −1,700−1.4% | Reduced |
| Quantinno Capital Management LP | 120,383 | $20.3M | 0.09% | +56,644+88.9% | Added |
| Rhumbline Advisers | 127,496 | $21.4M | 0.02% | +4,685+3.8% | Added |
| JPMorgan Chase & Co | 138,090 | $23.2M | 0.00% | −108,399−44.0% | Reduced |
| UBS Group AG | 142,164 | $23.9M | 0.00% | −28,013−16.5% | Reduced |
| Hawk Ridge Capital Management LP | 148,685 | $25.0M | 1.04% | +148,685 | New |
| Nuveen, LLC | 149,658 | $25.2M | 0.01% | −5,387−3.5% | Reduced |
| American Century Companies Inc | 152,228 | $25.6M | 0.01% | +73,052+92.3% | Added |
| Gotham Asset Management, LLC | 165,356 | $27.8M | 0.17% | +20,766+14.4% | Added |
| TD Asset Management Inc | 167,176 | $28.1M | 0.02% | +78,508+88.5% | Added |
| Woodline Partners LP | 182,709 | $30.7M | 0.16% | +49,740+37.4% | Added |
| Comerica Bank | 189,822 | $31.9M | 0.12% | +51,967+37.7% | Added |
| Bank of America Corp | 190,176 | $32.0M | 0.00% | −126,467−39.9% | Reduced |
| Raymond James Financial Inc | 200,229 | $33.7M | 0.01% | −5,887−2.9% | Reduced |
| UBS Asset Management Americas Inc | 209,563 | $35.3M | 0.01% | +20,433+10.8% | Added |
| Invesco Ltd. | 237,303 | $39.9M | 0.01% | −24,055−9.2% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 240,563 | $40.5M | 0.12% | +240,563 | New |
| Bank of New York Mellon Corp | 317,593 | $53.4M | 0.01% | −14,515−4.4% | Reduced |
| CI Private Wealth, LLC | 330,414 | $55.6M | 0.08% | −17,624−5.1% | Reduced |
| Charles Schwab Investment Management Inc | 370,734 | $62.4M | 0.01% | −6,336−1.7% | Reduced |
| Bamco Inc | 384,589 | $64.7M | 0.18% | +67,307+21.2% | Added |
| Northern Trust Corp | 388,542 | $65.4M | 0.01% | +5,186+1.4% | Added |
| Ameriprise Financial Inc | 394,487 | $66.4M | 0.02% | +182,701+86.3% | Added |
| Price T Rowe Associates Inc | 405,460 | $68.2M | 0.01% | +122,823+43.5% | Added |
| Schroder Investment Management Group | 448,501 | $75.4M | 0.06% | +12,953+3.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 471,041 | $79.2M | 0.05% | +98,063+26.3% | Added |
| Goldman Sachs Group Inc | 471,525 | $79.3M | 0.01% | +191,270+68.2% | Added |
| Dimensional Fund Advisors LP | 523,226 | $88.0M | 0.02% | −180,152−25.6% | Reduced |
| RTW Investments, LP | 683,294 | $114.9M | 1.64% | 00.0% | Unchanged |
| Liontrust Investment Partners LLP | 708,300 | $119.2M | 1.71% | −39,198−5.2% | Reduced |
| Morgan Stanley | 767,375 | $129.1M | 0.01% | +31,593+4.3% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 767,426 | $129.1M | 0.37% | +767,426 | New |
| Alliancebernstein L.P. | 844,067 | $142.0M | 0.05% | −21,803−2.5% | Reduced |
| Geode Capital Management, LLC | 896,418 | $150.8M | 0.01% | +52,100+6.2% | Added |
| Alyeska Investment Group, L.P. | 1,134,490 | $190.8M | 0.68% | +411,956+57.0% | Added |
| Durable Capital Partners LP | 1,163,898 | $195.8M | 1.48% | +38,279+3.4% | Added |
| Westfield Capital Management Co LP | 1,181,203 | $198.7M | 0.83% | +509,724+75.9% | Added |
| Holocene Advisors, LP | 1,243,607 | $209.2M | 0.52% | −89,689−6.7% | Reduced |
| State Street Corp | 1,486,394 | $250.0M | 0.01% | +10,403+0.7% | Added |
| Capital Research Global Investors | 1,855,670 | $312.2M | 0.06% | −200,425−9.7% | Reduced |
| Massachusetts Financial Services Co | 2,470,393 | $415.6M | 0.13% | +502,555+25.5% | Added |
| T. Rowe Price Investment Management, Inc. | 2,500,144 | $420.6M | 0.27% | +826,892+49.4% | Added |
| Vanguard Group Inc | 4,638,135 | $780.2M | 0.01% | +54,859+1.2% | Added |
| Politan Capital Management LP | 4,716,536 | $793.4M | 56.98% | +1,7900.0% | Added |
| FMR LLC | 8,181,372 | $1.38B | 0.08% | +2,6090.0% | Added |
| BlackRock, Inc. | 10,507,326 | $1.77B | 0.03% | +635,898+6.4% | Added |
| Artisan Partners Limited Partnership | 0 | $0 | 0.00% | −299,023−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −59,792−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −49,327−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −45,000−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −30,485−100.0% | Sold out |
| Redmile Group, LLC | 0 | $0 | 0.00% | −26,062−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −22,952−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −17,388−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −11,912−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −10,248−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −10,197−100.0% | Sold out |
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −8,675−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −7,530−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −6,978−100.0% | Sold out |
| Sigma Planning Corp | 0 | $0 | 0.00% | −6,365−100.0% | Sold out |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −6,023−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −6,000−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −5,245−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −4,852−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −4,462−100.0% | Sold out |
| Pinebridge Investments, L.P. | 0 | $0 | 0.00% | −3,954−100.0% | Sold out |