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, Q3 2025
Institutional positions in Masimo Corp as of Sep 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
- 358
- −17 vs. Q2 2025
- Shares held
- 56.2M
- −1.27M (−2.2%) vs. Q2 2025
- Total value
- $8.29B
- −$1.38B (−14.3%) vs. Q2 2025
- New holders
- 46
- 120 more added
- Sold out
- 63
- 121 more reduced
4 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pathstone Holdings, LLC | 6,960 | $1.03M | 0.00% | −139−2.0% | Reduced |
| The PNC Financial Services Group, Inc. | 7,252 | $1.07M | 0.00% | +854+13.3% | Added |
| LPL Financial LLC | 7,322 | $1.08M | 0.00% | +18+0.2% | Added |
| Mitsubishi UFJ Asset Management (UK) Ltd. | 8,000 | $1.18M | 0.57% | 00.0% | Unchanged |
| De Burlo Group Inc | 8,052 | $1.19M | 0.14% | −50−0.6% | Reduced |
| Birchview Capital, LP | 8,280 | $1.22M | 0.92% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 8,656 | $1.28M | 0.04% | −88−1.0% | Reduced |
| Bryn Mawr Trust Co | 8,899 | $1.31M | 0.03% | −1,051−10.6% | Reduced |
| SG Americas Securities, LLC | 8,919 | $1.32M | 0.00% | −5,847−39.6% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,190 | $1.36M | 0.00% | +333+3.8% | Added |
| Oregon Public Employees Retirement Fund | 9,274 | $1.37M | 0.02% | +55+0.6% | Added |
| Verition Fund Management LLC | 9,403 | $1.39M | 0.01% | −8,910−48.7% | Reduced |
| Xponance, Inc. | 9,430 | $1.39M | 0.01% | +224+2.4% | Added |
| KLP Kapitalforvaltning AS | 9,800 | $1.45M | 0.01% | +400+4.3% | Added |
| New Mexico Educational Retirement Board | 9,900 | $1.46M | 0.05% | 00.0% | Unchanged |
| Harbor Capital Advisors, Inc. | 9,932 | $1.47M | 0.11% | −16,480−62.4% | Reduced |
| Dark Forest Capital Management LP | 10,009 | $1.48M | 0.06% | +10,009 | New |
| Northwestern Mutual Investment Management Company, LLC | 10,293 | $1.52M | 0.02% | +246+2.4% | Added |
| Sterling Capital Management LLC | 10,613 | $1.57M | 0.02% | −12,654−54.4% | Reduced |
| Perpetual Ltd | 10,648 | $1.57M | 0.02% | −10,524−49.7% | Reduced |
| Schonfeld Strategic Advisors LLC | 10,884 | $1.61M | 0.01% | −3,355−23.6% | Reduced |
| State of Michigan Retirement System | 10,996 | $1.62M | 0.01% | +200+1.9% | Added |
| Creative Planning | 11,034 | $1.63M | 0.00% | −136−1.2% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.68M | 0.07% | 00.0% | Unchanged |
| Lockerman Financial Group, Inc. | 11,800 | $1.74M | 2.19% | −1,300−9.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 11,851 | $1.75M | 0.01% | +289+2.5% | Added |
| Picton Mahoney Asset Management | 11,970 | $1.77M | 0.02% | −32,587−73.1% | Reduced |
| Quantitative Investment Management, LLC | 12,025 | $1.77M | 0.25% | +12,025 | New |
| Handelsbanken Fonder AB | 12,330 | $1.82M | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 12,859 | $1.90M | 0.00% | +1,797+16.2% | Added |
| Louisiana State Employees Retirement System | 12,900 | $1.90M | 0.03% | +200+1.6% | Added |
| Montanaro Asset Management Ltd | 12,960 | $1.91M | 0.48% | −9,900−43.3% | Reduced |
| Arizona State Retirement System | 13,609 | $2.01M | 0.01% | +224+1.7% | Added |
| Empower Advisory Group, LLC | 14,105 | $2.08M | 0.01% | +45+0.3% | Added |
| Public Employees Retirement System of Ohio | 14,396 | $2.12M | 0.01% | +64+0.4% | Added |
| BNP Paribas Arbitrage, SA | 14,507 | $2.14M | 0.00% | +10,024+223.6% | Added |
| State of Tennessee, Treasury Department | 14,514 | $2.14M | 0.01% | −3,656−20.1% | Reduced |
| Teachers Retirement System of the State of Kentucky | 14,771 | $2.18M | 0.02% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 14,851 | $2.19M | 0.00% | +4,255+40.2% | Added |
| Yousif Capital Management, LLC | 14,884 | $2.20M | 0.02% | −757−4.8% | Reduced |
| ADAR1 Capital Management, LLC | 15,000 | $2.21M | 0.22% | +15,000 | New |
| Landscape Capital Management, L.L.C. | 15,292 | $2.26M | 0.14% | +8,263+117.6% | Added |
| Brown Advisory Inc | 15,533 | $2.29M | 0.00% | +10.0% | Added |
| Illinois Municipal Retirement Fund | 15,565 | $2.30M | 0.03% | +3,145+25.3% | Added |
| Canada Pension Plan Investment Board | 15,800 | $2.33M | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 16,131 | $2.38M | 0.00% | +12,224+312.9% | Added |
| State of New Jersey Common Pension Fund D | 16,652 | $2.46M | 0.01% | +785+4.9% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 16,757 | $2.47M | 0.01% | +16,752+335,040.0% | Added |
| Entropy Technologies, LP | 16,809 | $2.48M | 0.19% | +8,809+110.1% | Added |
| Wells Fargo & Company | 17,280 | $2.55M | 0.00% | −909−5.0% | Reduced |
| Commerce Bank | 18,891 | $2.79M | 0.02% | −539−2.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 19,995 | $2.95M | 0.02% | +3,052+18.0% | Added |
| Janus Henderson Group PLC | 20,000 | $2.95M | 0.00% | 00.0% | Unchanged |
| Treasurer of the State of North Carolina | 20,268 | $2.99M | 0.01% | −785−3.7% | Reduced |
| ING Groep NV | 20,800 | $3.07M | 0.02% | +20,800 | New |
| Envestnet Asset Management Inc | 21,142 | $3.12M | 0.00% | −6,092−22.4% | Reduced |
| Cardinal Capital Management | 21,180 | $3.13M | 0.43% | +943+4.7% | Added |
| Mutual of America Capital Management LLC | 21,325 | $3.15M | 0.03% | −1,054−4.7% | Reduced |
| SEI Investments Co | 21,655 | $3.20M | 0.00% | −8,851−29.0% | Reduced |
| State of Wisconsin Investment Board | 21,738 | $3.21M | 0.01% | +94+0.4% | Added |
| Amalgamated Bank | 22,601 | $3.33M | 0.02% | +858+3.9% | Added |
| South Dakota Investment Council | 23,068 | $3.40M | 0.07% | −1,700−6.9% | Reduced |
| New York State Common Retirement Fund | 24,160 | $3.56M | 0.00% | 00.0% | Unchanged |
| Advisors Asset Management, Inc. | 24,188 | $3.57M | 0.06% | −195−0.8% | Reduced |
| Westmount Partners, LLC | 25,866 | $3.69M | 0.95% | 00.0% | Unchanged |
| Logan Capital Management Inc | 25,105 | $3.70M | 0.16% | −6,247−19.9% | Reduced |
| MetLife Investment Management | 25,849 | $3.81M | 0.02% | −436−1.7% | Reduced |
| Great West Life Assurance Co | 27,120 | $3.87M | 0.01% | +1,000+3.8% | Added |
| Wilson Asset Management (International) Pty Ltd | 27,234 | $4.02M | 0.99% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 27,361 | $4.04M | 0.01% | +11,385+71.3% | Added |
| Storebrand Asset Management AS | 27,732 | $4.09M | 0.01% | +10,000+56.4% | Added |
| Gluskin Sheff & Assoc Inc | 27,923 | $4.12M | 0.52% | +19,699+239.5% | Added |
| Intech Investment Management LLC | 29,690 | $4.38M | 0.04% | −2,060−6.5% | Reduced |
| AQR Capital Management LLC | 31,034 | $4.44M | 0.00% | −19,222−38.2% | Reduced |
| Engineers Gate Manager LP | 30,773 | $4.54M | 0.05% | +23,900+347.7% | Added |
| Tudor Investment Corp Et Al | 31,641 | $4.67M | 0.03% | +31,641 | New |
| Nordea Investment Management AB | 32,499 | $4.69M | 0.00% | +631+2.0% | Added |
| Gabelli Funds LLC | 32,700 | $4.82M | 0.03% | 00.0% | Unchanged |
| Victory Capital Management Inc | 33,045 | $4.88M | 0.00% | +3,677+12.5% | Added |
| Manufacturers Life Insurance Company, The | 34,193 | $5.05M | 0.00% | −24,521−41.8% | Reduced |
| Capital Fund Management S.A. | 34,424 | $5.08M | 0.05% | +34,424 | New |
| Baird Financial Group, Inc. | 35,834 | $5.29M | 0.01% | −4,886−12.0% | Reduced |
| STRS Ohio | 36,913 | $5.45M | 0.02% | −19,070−34.1% | Reduced |
| Quantinno Capital Management LP | 39,589 | $5.84M | 0.02% | −80,794−67.1% | Reduced |
| New York State Teachers Retirement System | 40,048 | $5.91M | 0.01% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 41,079 | $6.06M | 0.01% | −2,240−5.2% | Reduced |
| NS Partners Ltd | 42,394 | $6.26M | 0.24% | −172−0.4% | Reduced |
| California State Teachers Retirement System | 43,355 | $6.40M | 0.01% | +20.0% | Added |
| Bridger Management, LLC | 47,841 | $7.06M | 3.80% | +14,200+42.2% | Added |
| Alliancebernstein L.P. | 53,561 | $7.90M | 0.00% | −790,506−93.7% | Reduced |
| Retirement Systems of Alabama | 55,831 | $8.24M | 0.03% | +828+1.5% | Added |
| First Trust Advisors LP | 61,934 | $9.14M | 0.01% | −37,678−37.8% | Reduced |
| BLI - Banque de Luxembourg Investments | 68,500 | $9.79M | 0.29% | −18,200−21.0% | Reduced |
| Swedbank AB | 67,500 | $9.96M | 0.01% | −6,300−8.5% | Reduced |
| Barclays PLC | 77,804 | $11.5M | 0.00% | +21,690+38.7% | Added |
| California Public Employees Retirement System | 78,460 | $11.6M | 0.01% | +5,653+7.8% | Added |
| Gamco Investors, Inc. Et Al | 83,800 | $12.4M | 0.12% | −700−0.8% | Reduced |
| Jupiter Asset Management Ltd | 84,657 | $12.5M | 0.11% | +84,657 | New |
| Amundi | 84,894 | $12.6M | 0.00% | +43,311+104.2% | Added |
| Citadel Advisors LLC | 87,750 | $12.9M | 0.01% | +63,473+261.5% | Added |