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 |
|---|---|---|---|---|---|
| Bank of Montreal | 5,563 | $935.8K | 0.00% | −565−9.2% | Reduced |
| Calamos Advisors LLC | 5,617 | $944.9K | 0.00% | −17,832−76.0% | Reduced |
| Winton Group Ltd | 5,617 | $944.9K | 0.05% | +5,617 | New |
| Guggenheim Capital LLC | 5,673 | $954.3K | 0.01% | −683−10.7% | Reduced |
| Deutsche Bank AG | 6,312 | $1.06M | 0.00% | +30.0% | Added |
| The PNC Financial Services Group, Inc. | 6,398 | $1.08M | 0.00% | +714+12.6% | Added |
| JustInvest LLC | 6,441 | $1.08M | 0.01% | +726+12.7% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 6,640 | $1.12M | 0.00% | +235+3.7% | Added |
| Pictet Asset Management Holding SA | 6,679 | $1.12M | 0.00% | −112−1.6% | Reduced |
| Bayforest Capital Ltd | 6,705 | $1.13M | 0.49% | +6,705 | New |
| Engineers Gate Manager LP | 6,873 | $1.16M | 0.01% | −881−11.4% | Reduced |
| Landscape Capital Management, L.L.C. | 7,029 | $1.18M | 0.09% | +2,031+40.6% | Added |
| Pathstone Holdings, LLC | 7,099 | $1.19M | 0.00% | +1,604+29.2% | Added |
| Summit Trail Advisors, LLC | 7,160 | $1.20M | 0.02% | +7,160 | New |
| Marshall Wace, LLP | 7,208 | $1.21M | 0.00% | −3,766−34.3% | Reduced |
| LPL Financial LLC | 7,304 | $1.23M | 0.00% | +2,248+44.5% | Added |
| Entropy Technologies, LP | 8,000 | $1.35M | 0.11% | +6,197+343.7% | Added |
| Mitsubishi UFJ Asset Management (UK) Ltd. | 8,000 | $1.35M | 0.70% | 00.0% | Unchanged |
| De Burlo Group Inc | 8,102 | $1.36M | 0.18% | −300−3.6% | Reduced |
| Gluskin Sheff & Assoc Inc | 8,224 | $1.38M | 0.17% | −9,231−52.9% | Reduced |
| Birchview Capital, LP | 8,280 | $1.39M | 1.38% | −3,000−26.6% | Reduced |
| Ameritas Investment Partners, Inc. | 8,744 | $1.47M | 0.05% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,857 | $1.49M | 0.00% | +662+8.1% | Added |
| TownSquare Capital, LLC | 9,014 | $1.52M | 0.15% | −856−8.7% | Reduced |
| Xponance, Inc. | 9,206 | $1.55M | 0.01% | +2,105+29.6% | Added |
| Oregon Public Employees Retirement Fund | 9,219 | $1.55M | 0.03% | +200+2.2% | Added |
| KLP Kapitalforvaltning AS | 9,400 | $1.58M | 0.01% | +500+5.6% | Added |
| New Mexico Educational Retirement Board | 9,900 | $1.67M | 0.05% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 9,950 | $1.67M | 0.03% | −1,290−11.5% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 10,047 | $1.69M | 0.03% | +166+1.7% | Added |
| Graham Capital Management, L.P. | 10,480 | $1.76M | 0.05% | +10,480 | New |
| Thrivent Financial for Lutherans | 10,596 | $1.78M | 0.00% | +177+1.7% | Added |
| State of Michigan Retirement System | 10,796 | $1.82M | 0.01% | +200+1.9% | Added |
| XTX Topco Ltd | 10,837 | $1.82M | 0.08% | +10,837 | New |
| Russell Investments Group, Ltd. | 10,935 | $1.84M | 0.00% | −23,812−68.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 11,062 | $1.86M | 0.00% | −309−2.7% | Reduced |
| Creative Planning | 11,170 | $1.88M | 0.00% | −48−0.4% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.91M | 0.09% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 11,562 | $1.94M | 0.01% | +939+8.8% | Added |
| Teacher Retirement System of Texas | 11,671 | $1.96M | 0.01% | −1,592−12.0% | Reduced |
| Fred Alger Management, LLC | 12,185 | $2.05M | 0.01% | +3,413+38.9% | Added |
| Handelsbanken Fonder AB | 12,330 | $2.07M | 0.01% | −600−4.6% | Reduced |
| Illinois Municipal Retirement Fund | 12,420 | $2.09M | 0.03% | +3,111+33.4% | Added |
| Louisiana State Employees Retirement System | 12,700 | $2.14M | 0.04% | +300+2.4% | Added |
| Lockerman Financial Group, Inc. | 13,100 | $2.20M | 2.97% | 00.0% | Unchanged |
| Arizona State Retirement System | 13,385 | $2.25M | 0.01% | +357+2.7% | Added |
| Empower Advisory Group, LLC | 14,060 | $2.37M | 0.01% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 14,239 | $2.40M | 0.02% | +3,969+38.6% | Added |
| Public Employees Retirement System of Ohio | 14,332 | $2.41M | 0.01% | +598+4.4% | Added |
| SG Americas Securities, LLC | 14,766 | $2.48M | 0.01% | +13,143+809.8% | Added |
| Teachers Retirement System of the State of Kentucky | 14,771 | $2.48M | 0.02% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 15,465 | $2.60M | 0.00% | −9,700−38.5% | Reduced |
| Brown Advisory Inc | 15,532 | $2.61M | 0.00% | +44+0.3% | Added |
| Yousif Capital Management, LLC | 15,641 | $2.63M | 0.03% | −145−0.9% | Reduced |
| Susquehanna International Group, LLP | 15,677 | $2.64M | 0.00% | +10,251+188.9% | Added |
| Canada Pension Plan Investment Board | 15,800 | $2.66M | 0.00% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 15,867 | $2.67M | 0.01% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 15,976 | $2.69M | 0.00% | +843+5.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 16,943 | $2.85M | 0.03% | +1,215+7.7% | Added |
| Storebrand Asset Management AS | 17,732 | $2.98M | 0.01% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 18,170 | $3.06M | 0.01% | 00.0% | Unchanged |
| Wells Fargo & Company | 18,189 | $3.06M | 0.00% | −328−1.8% | Reduced |
| Verition Fund Management LLC | 18,313 | $3.08M | 0.02% | −125,446−87.3% | Reduced |
| Commerce Bank | 19,430 | $3.27M | 0.02% | +14,406+286.7% | Added |
| Voya Investment Management LLC | 19,581 | $3.29M | 0.00% | +7,307+59.5% | Added |
| Janus Henderson Group PLC | 20,000 | $3.36M | 0.00% | 00.0% | Unchanged |
| Cardinal Capital Management | 20,237 | $3.40M | 0.50% | +369+1.9% | Added |
| Allspring Global Investments Holdings, LLC | 20,897 | $3.53M | 0.01% | −17,405−45.4% | Reduced |
| Treasurer of the State of North Carolina | 21,053 | $3.54M | 0.01% | +1,198+6.0% | Added |
| Perpetual Ltd | 21,172 | $3.56M | 0.04% | −9,037−29.9% | Reduced |
| State of Wisconsin Investment Board | 21,644 | $3.64M | 0.01% | +5,110+30.9% | Added |
| Amalgamated Bank | 21,743 | $3.66M | 0.03% | +1,081+5.2% | Added |
| Mutual of America Capital Management LLC | 22,379 | $3.76M | 0.04% | −492−2.2% | Reduced |
| Montanaro Asset Management Ltd | 22,860 | $3.85M | 0.99% | −9,440−29.2% | Reduced |
| Sterling Capital Management LLC | 23,267 | $3.91M | 0.06% | +2,661+12.9% | Added |
| New York State Common Retirement Fund | 24,160 | $4.06M | 0.01% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 24,219 | $4.07M | 0.01% | −291,203−92.3% | Reduced |
| Citadel Advisors LLC | 24,277 | $4.08M | 0.00% | −25,205−50.9% | Reduced |
| Advisors Asset Management, Inc. | 24,383 | $4.10M | 0.07% | −2,905−10.6% | Reduced |
| South Dakota Investment Council | 24,768 | $4.17M | 0.08% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 25,377 | $4.27M | 0.01% | +10,377+69.2% | Added |
| Westmount Partners, LLC | 25,866 | $4.35M | 1.19% | −125−0.5% | Reduced |
| Great West Life Assurance Co | 26,120 | $4.39M | 0.01% | −492−1.8% | Reduced |
| MetLife Investment Management | 26,285 | $4.42M | 0.03% | +645+2.5% | Added |
| Harbor Capital Advisors, Inc. | 26,412 | $4.44M | 0.19% | +26,412 | New |
| Envestnet Asset Management Inc | 27,234 | $4.58M | 0.00% | −4,554−14.3% | Reduced |
| Wilson Asset Management (International) Pty Ltd | 27,234 | $4.58M | 1.13% | +27,234 | New |
| Victory Capital Management Inc | 29,368 | $4.94M | 0.00% | +3,001+11.4% | Added |
| SEI Investments Co | 30,506 | $5.13M | 0.01% | −18,859−38.2% | Reduced |
| Logan Capital Management Inc | 31,352 | $5.27M | 0.25% | −11,043−26.0% | Reduced |
| Nordea Investment Management AB | 31,868 | $5.33M | 0.00% | +5,659+21.6% | Added |
| Intech Investment Management LLC | 31,750 | $5.34M | 0.05% | −744−2.3% | Reduced |
| Gabelli Funds LLC | 32,700 | $5.50M | 0.04% | −300−0.9% | Reduced |
| Bridger Management, LLC | 33,641 | $5.66M | 3.34% | −5,659−14.4% | Reduced |
| Norges Bank | 39,053 | $6.57M | 0.00% | −361−0.9% | Reduced |
| New York State Teachers Retirement System | 40,048 | $6.74M | 0.01% | 00.0% | Unchanged |
| Baird Financial Group, Inc. | 40,720 | $6.85M | 0.01% | −4,400−9.8% | Reduced |
| Amundi | 41,583 | $7.12M | 0.00% | +416+1.0% | Added |
| NS Partners Ltd | 42,566 | $7.16M | 0.29% | −989−2.3% | Reduced |
| Walleye Capital LLC | 43,232 | $7.27M | 0.07% | −33,138−43.4% | Reduced |