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 2021
Institutional positions in Masimo Corp as of Jun 30, 2021. 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
- 459
- −20 vs. Q1 2021
- Shares held
- 45.8M
- +1.39M (+3.1%) vs. Q1 2021
- Total value
- $11.1B
- +$909.0M (+8.9%) vs. Q1 2021
- New holders
- 45
- 165 more added
- Sold out
- 65
- 172 more reduced
2 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Arizona State Retirement System | 14,840 | $3.60M | 0.03% | −240−1.6% | Reduced |
| Brewin Dolphin Ltd | 14,915 | $3.62M | 0.16% | −5,942−28.5% | Reduced |
| Aigen Investment Management, LP | 14,918 | $3.62M | 0.63% | +8,858+146.2% | Added |
| Aviva PLC | 15,793 | $3.83M | 0.02% | −5,900−27.2% | Reduced |
| Advisors Asset Management, Inc. | 16,393 | $3.97M | 0.06% | −5,343−24.6% | Reduced |
| Fred Alger Management, LLC | 16,572 | $4.02M | 0.01% | −177,090−91.4% | Reduced |
| Autus Asset Management, LLC | 16,738 | $4.06M | 0.44% | +385+2.4% | Added |
| Unigestion Holding SA | 16,519 | $4.08M | 0.15% | −4,805−22.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 16,857 | $4.09M | 0.05% | −106−0.6% | Reduced |
| Personal Capital Advisors Corp | 17,021 | $4.13M | 0.02% | +11+0.1% | Added |
| Mandatum Life Insurance Co Ltd | 17,279 | $4.19M | 0.76% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 17,343 | $4.21M | 0.05% | −4,496−20.6% | Reduced |
| Pictet Asset Management Ltd | 18,063 | $4.38M | 0.00% | −1,537−7.8% | Reduced |
| Treasurer of the State of North Carolina | 18,162 | $4.40M | 0.03% | −540−2.9% | Reduced |
| Federated Hermes, Inc. | 18,324 | $4.44M | 0.01% | −45,834−71.4% | Reduced |
| Capital Impact Advisors, LLC | 18,743 | $4.54M | 1.47% | +6,893+58.2% | Added |
| Two Sigma Advisers, LP | 20,100 | $4.87M | 0.01% | −21,700−51.9% | Reduced |
| Carmignac Gestion | 20,184 | $4.92M | 0.06% | +4,083+25.4% | Added |
| Ravenstone Capital Management Inc. | 20,475 | $4.96M | 4.45% | +20,475 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 21,054 | $5.11M | 0.03% | +2,632+14.3% | Added |
| Candriam Luxembourg S.C.A. | 21,090 | $5.11M | 0.04% | +2,911+16.0% | Added |
| North Star Asset Management Inc | 21,168 | $5.13M | 0.28% | +293+1.4% | Added |
| McKinley Capital Management LLC /Delaware | 21,330 | $5.17M | 0.36% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 21,150 | $5.22M | 0.05% | +1,443+7.3% | Added |
| Polar Capital Holdings Plc | 21,612 | $5.24M | 0.03% | +1,788+9.0% | Added |
| Asset Management One Co.,Ltd. | 22,385 | $5.43M | 0.02% | −2,939−11.6% | Reduced |
| State of Tennessee, Treasury Department | 22,690 | $5.50M | 0.02% | 00.0% | Unchanged |
| KBC Group NV | 22,808 | $5.53M | 0.02% | +3,660+19.1% | Added |
| Illinois Municipal Retirement Fund | 23,283 | $5.64M | 0.23% | −3,444−12.9% | Reduced |
| Man Group plc | 23,668 | $5.74M | 0.02% | +725+3.2% | Added |
| Holocene Advisors, LP | 23,908 | $5.80M | 0.04% | +14,891+165.1% | Added |
| Erste Asset Management GmbH | 24,000 | $5.82M | 0.12% | −10,000−29.4% | Reduced |
| Railway Pension Investments Ltd | 24,500 | $5.94M | 0.05% | +1,000+4.3% | Added |
| Price T Rowe Associates Inc | 24,868 | $6.03M | 0.00% | −3,185−11.4% | Reduced |
| Russell Investments Group, Ltd. | 25,260 | $6.12M | 0.01% | −5,392−17.6% | Reduced |
| MetLife Investment Management | 25,284 | $6.13M | 0.05% | −980−3.7% | Reduced |
| Prudential Financial Inc | 25,643 | $6.22M | 0.01% | +9,225+56.2% | Added |
| State of Wisconsin Investment Board | 25,692 | $6.23M | 0.01% | +1,865+7.8% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 26,632 | $6.46M | 0.08% | −6,156−18.8% | Reduced |
| LPL Financial LLC | 26,854 | $6.51M | 0.01% | −442−1.6% | Reduced |
| Banco Santander, S.A. | 28,233 | $6.84M | 0.04% | 00.0% | Unchanged |
| Voya Investment Management LLC | 28,750 | $6.97M | 0.01% | −3,076−9.7% | Reduced |
| Public Employees Retirement System of Ohio | 29,061 | $7.05M | 0.02% | −1,571−5.1% | Reduced |
| State of New Jersey Common Pension Fund D | 29,133 | $7.06M | 0.02% | −3,867−11.7% | Reduced |
| Handelsinvest Investeringsforvaltning | 30,000 | $7.27M | 0.81% | +7,000+30.4% | Added |
| Janus Henderson Group PLC | 31,990 | $7.75M | 0.00% | −43,184−57.4% | Reduced |
| Comerica Bank | 28,011 | $7.79M | 0.05% | −3,262−10.4% | Reduced |
| Envestnet Asset Management Inc | 32,873 | $7.97M | 0.00% | +6,599+25.1% | Added |
| Nomura Asset Management Co Ltd | 33,459 | $8.11M | 0.05% | +687+2.1% | Added |
| NS Partners Ltd | 33,868 | $8.21M | 0.43% | −4,073−10.7% | Reduced |
| State of Alaska, Department of Revenue | 34,077 | $8.26M | 0.08% | −1,860−5.2% | Reduced |
| Paradigm Capital Management Inc | 35,553 | $8.62M | 0.41% | +2,000+6.0% | Added |
| Brewin Dolphin Wealth Management Ltd | 35,556 | $8.62M | 1.05% | +18,366+106.8% | Added |
| Shell Asset Management Co | 35,839 | $8.69M | 0.17% | +13,631+61.4% | Added |
| Gabelli Funds LLC | 36,000 | $8.73M | 0.06% | −200−0.6% | Reduced |
| Texas Permanent School Fund | 37,708 | $9.14M | 0.11% | −278−0.7% | Reduced |
| Forte Capital LLC | 38,443 | $9.32M | 1.27% | +622+1.6% | Added |
| Amalgamated Bank | 39,759 | $9.64M | 0.08% | +36,914+1,297.5% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 40,000 | $9.70M | 0.49% | 00.0% | Unchanged |
| 2Xideas AG | 40,011 | $9.70M | 0.87% | +6,259+18.5% | Added |
| Thrivent Financial for Lutherans | 40,402 | $9.80M | 0.02% | +26,716+195.2% | Added |
| SEI Investments Co | 41,516 | $10.1M | 0.02% | −3,773−8.3% | Reduced |
| HSBC Holdings PLC | 41,777 | $10.2M | 0.01% | +22,651+118.4% | Added |
| Eaton Vance Management | 42,179 | $10.2M | 0.01% | +1,302+3.2% | Added |
| Royal Bank of Canada | 43,264 | $10.5M | 0.00% | +9,441+27.9% | Added |
| Ensign Peak Advisors, Inc | 44,566 | $10.8M | 0.02% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 44,584 | $10.8M | 0.11% | −1,017−2.2% | Reduced |
| Great West Life Assurance Co | 46,777 | $11.3M | 0.03% | −5,974−11.3% | Reduced |
| Brown Capital Management LLC | 47,239 | $11.5M | 0.09% | +574+1.2% | Added |
| AQR Capital Management LLC | 52,112 | $12.6M | 0.02% | +554+1.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 51,905 | $12.7M | 0.03% | +11,989+30.0% | Added |
| Canada Pension Plan Investment Board | 54,169 | $13.1M | 0.02% | +50,702+1,462.4% | Added |
| Bryn Mawr Trust Co | 57,035 | $13.8M | 0.53% | −9,129−13.8% | Reduced |
| Logan Capital Management Inc | 58,093 | $14.1M | 0.66% | +1,338+2.4% | Added |
| New York State Teachers Retirement System | 59,580 | $14.4M | 0.03% | −1,200−2.0% | Reduced |
| AXA S.A. | 61,233 | $14.8M | 0.04% | +2,657+4.5% | Added |
| Bank of Montreal | 60,940 | $15.2M | 0.01% | −2,415−3.8% | Reduced |
| Bridgewater Associates, LP | 63,600 | $15.4M | 0.10% | +25,147+65.4% | Added |
| State Board of Administration of Florida Retirement System | 67,629 | $16.4M | 0.03% | −4,393−6.1% | Reduced |
| Moore Capital Management, LP | 67,819 | $16.4M | 0.30% | −18,731−21.6% | Reduced |
| Barclays PLC | 68,484 | $16.6M | 0.01% | +7,538+12.4% | Added |
| New York State Common Retirement Fund | 70,045 | $17.0M | 0.02% | +7,710+12.4% | Added |
| Scout Investments, Inc. | 71,831 | $17.4M | 0.26% | −324−0.4% | Reduced |
| Baillie Gifford & Co | 77,328 | $18.7M | 0.01% | +9,230+13.6% | Added |
| British Columbia Investment Management Corp | 81,733 | $19.8M | 0.12% | +25,470+45.3% | Added |
| Alliancebernstein L.P. | 83,549 | $20.3M | 0.01% | −2,931−3.4% | Reduced |
| Wells Fargo & Company | 85,581 | $20.7M | 0.00% | −51,847−37.7% | Reduced |
| Morgan Stanley | 87,650 | $21.3M | 0.00% | −45,409−34.1% | Reduced |
| California State Teachers Retirement System | 88,267 | $21.4M | 0.03% | −3,124−3.4% | Reduced |
| Gamco Investors, Inc. Et Al | 89,500 | $21.7M | 0.18% | −500−0.6% | Reduced |
| American International Group, Inc. | 90,195 | $21.9M | 0.09% | −2,437−2.6% | Reduced |
| Parametric Portfolio Associates LLC | 92,462 | $22.4M | 0.01% | +57+0.1% | Added |
| Amundi | 96,087 | $23.3M | 0.02% | +96,087 | New |
| Capitolis Advisors LLC | 103,058 | $25.0M | 0.29% | +91,700+807.4% | Added |
| Montanaro Asset Management Ltd | 103,200 | $25.0M | 3.15% | −1,300−1.2% | Reduced |
| Manufacturers Life Insurance Company, The | 114,231 | $27.7M | 0.02% | +7,361+6.9% | Added |
| ArrowMark Colorado Holdings LLC | 125,426 | $30.4M | 0.23% | −10,602−7.8% | Reduced |
| Bellevue Group AG | 127,713 | $31.0M | 0.30% | +1,517+1.2% | Added |
| JPMorgan Chase & Co | 128,689 | $31.2M | 0.00% | −48,774−27.5% | Reduced |
| Rhumbline Advisers | 135,043 | $32.7M | 0.04% | +1,185+0.9% | Added |