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 2023
Institutional positions in Masimo Corp as of Dec 31, 2023. 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
- 342
- −10 vs. Q3 2023
- Shares held
- 50.4M
- +3.05M (+6.5%) vs. Q3 2023
- Total value
- $5.91B
- +$1.75B (+42.3%) vs. Q3 2023
- New holders
- 63
- 111 more added
- Sold out
- 73
- 121 more reduced
5 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 2023
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Storebrand Asset Management AS | 28,960 | $3.39M | 0.01% | −620−2.1% | Reduced |
| Mutual of America Capital Management LLC | 27,507 | $3.22M | 0.04% | −1,416−4.9% | Reduced |
| Royal Bank of Canada | 27,476 | $3.22M | 0.00% | −8,698−24.0% | Reduced |
| Readystate Asset Management LP | 27,480 | $3.22M | 0.19% | +27,480 | New |
| Brown Capital Management LLC | 26,972 | $3.16M | 0.05% | +4,849+21.9% | Added |
| MetLife Investment Management | 26,780 | $3.14M | 0.02% | −419−1.5% | Reduced |
| State of New Jersey Common Pension Fund D | 26,666 | $3.13M | 0.01% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 26,583 | $3.12M | 0.01% | −185,049−87.4% | Reduced |
| Westmount Partners, LLC | 26,424 | $3.10M | 1.26% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 25,560 | $3.00M | 0.01% | −11,163−30.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 24,466 | $2.87M | 0.00% | +20,863+579.0% | Added |
| Janus Henderson Group PLC | 23,254 | $2.73M | 0.00% | −1,639−6.6% | Reduced |
| State of Wisconsin Investment Board | 23,157 | $2.71M | 0.01% | +15,000+183.9% | Added |
| Yousif Capital Management, LLC | 20,998 | $2.46M | 0.03% | −51−0.2% | Reduced |
| Deutsche Bank AG | 20,369 | $2.39M | 0.00% | −341−1.6% | Reduced |
| Envestnet Asset Management Inc | 20,129 | $2.36M | 0.00% | −1,784−8.1% | Reduced |
| Creative Planning | 19,769 | $2.32M | 0.00% | +1,483+8.1% | Added |
| Abn Amro Investment Solutions | 19,656 | $2.30M | 0.04% | −7,584−27.8% | Reduced |
| Bank of America Corp | 19,629 | $2.30M | 0.00% | −12,632−39.2% | Reduced |
| Bell Asset Management Ltd | 19,405 | $2.27M | 0.35% | −35,448−64.6% | Reduced |
| Treasurer of the State of North Carolina | 19,139 | $2.24M | 0.01% | +180+0.9% | Added |
| Voya Investment Management LLC | 18,894 | $2.21M | 0.00% | −3,857−17.0% | Reduced |
| Wolverine Trading, LLC | 18,687 | $2.19M | 0.02% | +4,884+35.4% | Added |
| Public Employees Retirement System of Ohio | 18,433 | $2.16M | 0.01% | +531+3.0% | Added |
| Brown Advisory Inc | 17,544 | $2.06M | 0.00% | −63−0.4% | Reduced |
| Royal London Asset Management Ltd | 17,188 | $2.01M | 0.01% | −1,727−9.1% | Reduced |
| Teachers Retirement System of the State of Kentucky | 15,841 | $1.86M | 0.02% | −700−4.2% | Reduced |
| Birchview Capital, LP | 15,280 | $1.79M | 1.40% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 14,875 | $1.74M | 0.00% | −1,250−7.8% | Reduced |
| Simplex Trading, LLC | 14,646 | $1.72M | 0.05% | −36,043−71.1% | Reduced |
| Lockerman Financial Group, Inc. | 14,400 | $1.69M | 3.90% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 14,334 | $1.68M | 0.00% | +6,862+91.8% | Added |
| Empower Advisory Group, LLC | 14,160 | $1.66M | 0.01% | +100+0.7% | Added |
| Capital Fund Management S.A. | 12,955 | $1.52M | 0.02% | −9,637−42.7% | Reduced |
| Sofinnova Investments, Inc. | 12,800 | $1.50M | 0.08% | +12,800 | New |
| Arizona State Retirement System | 12,551 | $1.47M | 0.01% | −222−1.7% | Reduced |
| Oregon Public Employees Retirement Fund | 12,548 | $1.47M | 0.03% | +100+0.8% | Added |
| Louisiana State Employees Retirement System | 12,500 | $1.47M | 0.03% | −100−0.8% | Reduced |
| Fred Alger Management, LLC | 12,439 | $1.46M | 0.01% | +12,439 | New |
| Weiss Multi-Strategy Advisers LLC | 12,000 | $1.41M | 0.04% | +2,600+27.7% | Added |
| Cardinal Capital Management | 11,802 | $1.38M | 0.26% | +255+2.2% | Added |
| Virtu Financial LLC | 11,611 | $1.36M | 0.11% | −10,762−48.1% | Reduced |
| Paradigm Capital Management Inc | 11,353 | $1.33M | 0.07% | 00.0% | Unchanged |
| State of Michigan Retirement System | 10,696 | $1.25M | 0.01% | +100+0.9% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 11,066 | $1.21M | 0.00% | +4,823+77.3% | Added |
| Laurus Investment Counsel Inc. | 7,710 | $1.20M | 0.43% | −630−7.6% | Reduced |
| Victory Capital Management Inc | 10,115 | $1.19M | 0.00% | −2,247−18.2% | Reduced |
| New Mexico Educational Retirement Board | 9,900 | $1.16M | 0.04% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 9,875 | $1.16M | 0.03% | +35+0.4% | Added |
| Ameritas Investment Partners, Inc. | 9,800 | $1.15M | 0.04% | −152−1.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 9,794 | $1.15M | 0.01% | +810+9.0% | Added |
| Xponance, Inc. | 9,635 | $1.13M | 0.01% | −256−2.6% | Reduced |
| Handelsbanken Fonder AB | 9,430 | $1.10M | 0.01% | +600+6.8% | Added |
| Illinois Municipal Retirement Fund | 9,309 | $1.09M | 0.02% | 00.0% | Unchanged |
| Norges Bank | 8,957 | $1.05M | 0.00% | −13,983−61.0% | Reduced |
| KP Management LLC | 8,884 | $1.04M | 0.52% | +8,884 | New |
| Eukles Asset Management | 8,864 | $1.04M | 0.49% | −456−4.9% | Reduced |
| Assenagon Asset Management S.A. | 8,773 | $1.03M | 0.00% | −17,216−66.2% | Reduced |
| De Burlo Group Inc | 11,452 | $1.00M | 0.17% | 00.0% | Unchanged |
| Linden Thomas Advisory Services, LLC | 8,539 | $1.00M | 0.19% | +183+2.2% | Added |
| Krensavage Asset Management, LLC | 8,000 | $938.0K | 0.33% | +8,000 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,914 | $927.6K | 0.00% | +713+9.9% | Added |
| Exchange Traded Concepts, LLC | 7,758 | $909.3K | 0.02% | −367−4.5% | Reduced |
| Brevan Howard Capital Management LP | 7,696 | $902.0K | 0.09% | +7,696 | New |
| Utah Retirement Systems | 7,521 | $881.5K | 0.01% | +100+1.3% | Added |
| US Bancorp | 7,329 | $859.0K | 0.00% | +22+0.3% | Added |
| Scientech Research LLC | 7,329 | $859.0K | 0.85% | +7,329 | New |
| Seaport Global Advisors, LLC | 7,109 | $833.2K | 2.00% | +6,022+554.0% | Added |
| Group One Trading, L.P. | 7,021 | $822.9K | 0.03% | +3,381+92.9% | Added |
| JustInvest LLC | 6,970 | $817.0K | 0.02% | +4,451+176.7% | Added |
| Truist Financial Corp | 6,825 | $800.0K | 0.00% | −117−1.7% | Reduced |
| Advisors Asset Management, Inc. | 6,822 | $799.6K | 0.02% | +3,773+123.7% | Added |
| LMR Partners LLP | 6,768 | $793.3K | 0.02% | +2,297+51.4% | Added |
| Pacer Advisors, Inc. | 6,672 | $782.0K | 0.00% | +2,978+80.6% | Added |
| Walleye Trading LLC | 6,428 | $753.4K | 0.01% | +4,642+259.9% | Added |
| Navellier & Associates Inc | 6,310 | $739.6K | 0.11% | 00.0% | Unchanged |
| Entropy Technologies, LP | 6,249 | $732.4K | 0.14% | +6,249 | New |
| Amundi | 6,406 | $727.2K | 0.00% | −765−10.7% | Reduced |
| Advisor Group Holdings, Inc. | 6,150 | $720.8K | 0.00% | −1,867−23.3% | Reduced |
| Peloton Wealth Strategists | 5,950 | $697.0K | 0.30% | −2,550−30.0% | Reduced |
| Public Employees Retirement Association of Colorado | 5,825 | $683.0K | 0.00% | −50−0.9% | Reduced |
| Bank of Montreal | 5,556 | $666.7K | 0.00% | −17,389−75.8% | Reduced |
| American Century Companies Inc | 5,588 | $655.0K | 0.00% | +375+7.2% | Added |
| Janney Montgomery Scott LLC | 5,478 | $642.0K | 0.00% | −1,751−24.2% | Reduced |
| Pictet Asset Management Holding SA | 5,401 | $633.1K | 0.00% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 5,369 | $629.3K | 0.00% | +5,369 | New |
| Allianz Asset Management GmbH | 5,272 | $617.9K | 0.00% | +11+0.2% | Added |
| APG Asset Management N.V. | 5,723 | $607.2K | 0.00% | −1,888−24.8% | Reduced |
| Stifel Financial Corp | 5,142 | $602.7K | 0.00% | +5,142 | New |
| Raymond James Trust N.A. | 5,114 | $599.4K | 0.02% | +634+14.2% | Added |
| Carmignac Gestion | 5,000 | $586.0K | 0.01% | −7,270−59.3% | Reduced |
| Martin Currie Ltd | 4,997 | $585.7K | 0.02% | −490,913−99.0% | Reduced |
| State of Alaska, Department of Revenue | 4,794 | $561.0K | 0.01% | −480−9.1% | Reduced |
| Private Advisor Group, LLC | 4,709 | $551.9K | 0.00% | +196+4.3% | Added |
| LPL Financial LLC | 4,543 | $532.4K | 0.00% | −1,594−26.0% | Reduced |
| Brinker Capital Investments, LLC | 4,571 | $523.5K | 0.01% | −1,053−18.7% | Reduced |
| Orion Portfolio Solutions, LLC | 4,571 | $523.5K | 0.01% | −1,053−18.7% | Reduced |
| Baird Financial Group, Inc. | 4,412 | $517.1K | 0.00% | −170−3.7% | Reduced |
| Neuberger Berman Group LLC | 4,308 | $504.9K | 0.00% | +4,308 | New |
| Oak Thistle LLC | 4,233 | $496.1K | 0.14% | +4,233 | New |