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, Q1 2024
Institutional positions in Masimo Corp as of Mar 31, 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
- 339
- 0 vs. Q4 2023
- Shares held
- 51.7M
- +1.31M (+2.6%) vs. Q4 2023
- Total value
- $7.59B
- +$1.69B (+28.6%) vs. Q4 2023
- New holders
- 50
- 96 more added
- Sold out
- 50
- 127 more reduced
3 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Northwestern Mutual Investment Management Company, LLC | 9,900 | $1.45M | 0.04% | +25+0.3% | Added |
| New Mexico Educational Retirement Board | 9,900 | $1.45M | 0.05% | 00.0% | Unchanged |
| Victory Capital Management Inc | 9,969 | $1.46M | 0.00% | −146−1.4% | Reduced |
| Capital Impact Advisors, LLC | 10,120 | $1.49M | 1.93% | +10,120 | New |
| Laurus Investment Counsel Inc. | 7,710 | $1.53M | 0.54% | 00.0% | Unchanged |
| De Burlo Group Inc | 10,802 | $1.59M | 0.21% | −650−5.7% | Reduced |
| State of Michigan Retirement System | 10,896 | $1.60M | 0.01% | +200+1.9% | Added |
| Oregon Public Employees Retirement Fund | 10,966 | $1.61M | 0.03% | −1,582−12.6% | Reduced |
| Exchange Traded Concepts, LLC | 10,984 | $1.61M | 0.04% | +3,226+41.6% | Added |
| Y-Intercept (Hong Kong) Ltd | 11,225 | $1.65M | 0.12% | +11,225 | New |
| Paradigm Capital Management Inc | 11,353 | $1.67M | 0.08% | 00.0% | Unchanged |
| Bank of Montreal | 11,517 | $1.69M | 0.00% | +5,961+107.3% | Added |
| Arizona State Retirement System | 12,344 | $1.81M | 0.01% | −207−1.6% | Reduced |
| Louisiana State Employees Retirement System | 12,800 | $1.88M | 0.04% | +300+2.4% | Added |
| Bridgewater Associates, LP | 13,887 | $2.04M | 0.01% | −31,839−69.6% | Reduced |
| Cinctive Capital Management LP | 13,963 | $2.05M | 0.11% | +13,963 | New |
| Empower Advisory Group, LLC | 14,060 | $2.06M | 0.01% | −100−0.7% | Reduced |
| Ensign Peak Advisors, Inc | 14,161 | $2.08M | 0.00% | −714−4.8% | Reduced |
| Lockerman Financial Group, Inc. | 14,400 | $2.11M | 4.04% | 00.0% | Unchanged |
| Cardinal Capital Management | 14,764 | $2.17M | 0.35% | +2,962+25.1% | Added |
| Birchview Capital, LP | 15,280 | $2.24M | 1.83% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 15,320 | $2.25M | 0.00% | −11,263−42.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 15,841 | $2.33M | 0.02% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 16,307 | $2.39M | 0.03% | +3,352+25.9% | Added |
| Creative Planning | 16,696 | $2.45M | 0.00% | −3,073−15.5% | Reduced |
| Public Employees Retirement System of Ohio | 16,895 | $2.48M | 0.01% | −1,538−8.3% | Reduced |
| Brown Advisory Inc | 17,571 | $2.58M | 0.00% | +27+0.2% | Added |
| Voya Investment Management LLC | 18,246 | $2.68M | 0.00% | −648−3.4% | Reduced |
| Treasurer of the State of North Carolina | 19,279 | $2.83M | 0.01% | +140+0.7% | Added |
| Abn Amro Investment Solutions | 19,656 | $2.89M | 0.05% | 00.0% | Unchanged |
| Sofinnova Investments, Inc. | 20,000 | $2.94M | 0.17% | +7,200+56.3% | Added |
| State of Wisconsin Investment Board | 20,443 | $3.00M | 0.01% | −2,714−11.7% | Reduced |
| Yousif Capital Management, LLC | 20,567 | $3.02M | 0.03% | −431−2.1% | Reduced |
| Janus Henderson Group PLC | 22,030 | $3.23M | 0.00% | −1,224−5.3% | Reduced |
| Envestnet Asset Management Inc | 22,414 | $3.29M | 0.00% | +2,285+11.4% | Added |
| Jane Street Group, LLC | 24,364 | $3.58M | 0.00% | −62,142−71.8% | Reduced |
| Amalgamated Bank | 24,606 | $3.61M | 0.03% | −5,784−19.0% | Reduced |
| State of Tennessee, Treasury Department | 25,000 | $3.67M | 0.01% | −560−2.2% | Reduced |
| Zacks Investment Management | 25,088 | $3.68M | 0.04% | +25,088 | New |
| Great West Life Assurance Co | 25,446 | $3.73M | 0.01% | −7,124−21.9% | Reduced |
| MetLife Investment Management | 26,144 | $3.84M | 0.03% | −636−2.4% | Reduced |
| Westmount Partners, LLC | 26,424 | $3.88M | 1.40% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 26,447 | $3.88M | 0.04% | −1,060−3.9% | Reduced |
| Royal Bank of Canada | 26,546 | $3.90M | 0.00% | −930−3.4% | Reduced |
| State of New Jersey Common Pension Fund D | 26,666 | $3.92M | 0.01% | 00.0% | Unchanged |
| Brown Capital Management LLC | 26,844 | $3.94M | 0.07% | −128−0.5% | Reduced |
| Storebrand Asset Management AS | 28,192 | $4.14M | 0.01% | −768−2.7% | Reduced |
| South Dakota Investment Council | 30,647 | $4.50M | 0.09% | −1,800−5.5% | Reduced |
| Gabelli Funds LLC | 33,000 | $4.85M | 0.04% | 00.0% | Unchanged |
| APG Asset Management N.V. | 36,669 | $4.99M | 0.01% | +30,946+540.7% | Added |
| TD Asset Management Inc | 34,230 | $5.03M | 0.00% | −45,200−56.9% | Reduced |
| Norges Bank | 34,407 | $5.05M | 0.00% | +25,450+284.1% | Added |
| British Columbia Investment Management Corp | 35,000 | $5.14M | 0.04% | 00.0% | Unchanged |
| Trexquant Investment LP | 35,755 | $5.25M | 0.10% | +35,755 | New |
| New York State Common Retirement Fund | 37,375 | $5.49M | 0.01% | −9,929−21.0% | Reduced |
| Moran Wealth Management, LLC | 37,380 | $5.49M | 0.18% | +1,632+4.6% | Added |
| Manufacturers Life Insurance Company, The | 38,277 | $5.62M | 0.01% | −18,291−32.3% | Reduced |
| PEAK6 Investments LLC | 38,758 | $5.69M | 0.28% | +1,634+4.4% | Added |
| Texas Permanent School Fund | 38,847 | $5.70M | 0.05% | +547+1.4% | Added |
| CenterBook Partners LP | 41,313 | $6.07M | 0.42% | +1,909+4.8% | Added |
| NS Partners Ltd | 41,885 | $6.15M | 0.28% | +6,267+17.6% | Added |
| UBS Group AG | 43,752 | $6.42M | 0.00% | +11,628+36.2% | Added |
| California State Teachers Retirement System | 44,793 | $6.58M | 0.01% | −2,364−5.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 46,607 | $6.84M | 0.01% | +22,141+90.5% | Added |
| Credit Suisse AG | 47,782 | $7.02M | 0.01% | +503+1.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 42,196 | $7.28M | 0.02% | +10,683+33.9% | Added |
| Bryn Mawr Trust Co | 50,080 | $7.35M | 0.28% | +50,080 | New |
| New York State Teachers Retirement System | 50,748 | $7.45M | 0.02% | +200+0.4% | Added |
| Logan Capital Management Inc | 51,113 | $7.51M | 0.32% | +1,240+2.5% | Added |
| Woodline Partners LP | 53,146 | $7.80M | 0.07% | −229,129−81.2% | Reduced |
| Citigroup Inc | 55,923 | $8.21M | 0.01% | +3,309+6.3% | Added |
| BNP Paribas Arbitrage, SA | 57,254 | $8.41M | 0.01% | −4,578−7.4% | Reduced |
| American International Group, Inc. | 59,110 | $8.68M | 0.03% | −1,211−2.0% | Reduced |
| Alliancebernstein L.P. | 61,055 | $8.97M | 0.00% | −6,462−9.6% | Reduced |
| California Public Employees Retirement System | 61,615 | $9.05M | 0.01% | −15,843−20.5% | Reduced |
| Picton Mahoney Asset Management | 61,990 | $9.10M | 0.38% | −41,047−39.8% | Reduced |
| First Trust Advisors LP | 62,526 | $9.18M | 0.01% | +59,335+1,859.4% | Added |
| Barclays PLC | 66,040 | $9.70M | 0.00% | +16,780+34.1% | Added |
| Wells Fargo & Company | 67,364 | $9.89M | 0.00% | −49,348−42.3% | Reduced |
| State Board of Administration of Florida Retirement System | 54,839 | $10.1M | 0.02% | +5,688+11.6% | Added |
| Price T Rowe Associates Inc | 71,548 | $10.5M | 0.00% | −338,960−82.6% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 72,729 | $10.7M | 0.25% | −12,445−14.6% | Reduced |
| FIL Ltd | 73,187 | $10.7M | 0.01% | −143,287−66.2% | Reduced |
| Gotham Asset Management, LLC | 77,098 | $11.3M | 0.17% | −2,958−3.7% | Reduced |
| Ameriprise Financial Inc | 78,881 | $11.6M | 0.00% | −3,914−4.7% | Reduced |
| Invesco Ltd. | 79,040 | $11.6M | 0.00% | +937+1.2% | Added |
| UBS Asset Management Americas Inc | 83,182 | $12.2M | 0.00% | −19,093−18.7% | Reduced |
| Gamco Investors, Inc. Et Al | 84,500 | $12.4M | 0.13% | 00.0% | Unchanged |
| Swiss National Bank | 88,600 | $13.0M | 0.01% | +200+0.2% | Added |
| Nuveen Asset Management, LLC | 89,358 | $13.1M | 0.00% | −3,710−4.0% | Reduced |
| Marshall Wace, LLP | 90,207 | $13.2M | 0.02% | −98,846−52.3% | Reduced |
| SEI Investments Co | 95,642 | $14.0M | 0.02% | −84,986−47.1% | Reduced |
| Legal & General Group Plc | 99,773 | $14.7M | 0.00% | −91,425−47.8% | Reduced |
| Comerica Bank | 102,695 | $15.1M | 0.06% | −6,564−6.0% | Reduced |
| Montanaro Asset Management Ltd | 107,100 | $15.7M | 2.84% | +2,850+2.7% | Added |
| Erste Asset Management GmbH | 115,000 | $16.9M | 0.23% | +115,000 | New |
| Rockefeller Capital Management L.P. | 116,673 | $17.1M | 0.05% | −11,418−8.9% | Reduced |
| Goldman Sachs Group Inc | 122,453 | $18.0M | 0.00% | −53,057−30.2% | Reduced |
| Bank of America Corp | 130,290 | $19.1M | 0.00% | +110,661+563.8% | Added |
| Rhumbline Advisers | 133,132 | $19.6M | 0.02% | −4,819−3.5% | Reduced |