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 2022
Institutional positions in Masimo Corp as of Mar 31, 2022. 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
- 457
- −57 vs. Q4 2021
- Shares held
- 45.4M
- −981.6K (−2.1%) vs. Q4 2021
- Total value
- $6.61B
- −$6.96B (−51.3%) vs. Q4 2021
- New holders
- 73
- 180 more added
- Sold out
- 130
- 136 more reduced
6 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2022
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 6,875,547 | $1.00B | 0.03% | −2,150,827−23.8% | Reduced |
| Vanguard Group Inc | 4,775,660 | $695.0M | 0.02% | +71,918+1.5% | Added |
| FMR LLC | 2,069,501 | $301.2M | 0.02% | +14,603+0.7% | Added |
| State Street Corp | 1,730,991 | $251.9M | 0.01% | +27,261+1.6% | Added |
| RTW Investments, LP | 1,127,593 | $164.1M | 3.40% | +277,622+32.7% | Added |
| Liontrust Investment Partners LLP | 1,007,600 | $146.6M | 1.92% | +1,007,600 | New |
| Champlain Investment Partners, LLC | 975,547 | $142.0M | 0.74% | +5,860+0.6% | Added |
| Marshall Wace, LLP | 968,094 | $140.9M | 0.29% | +967,981+856,620.4% | Added |
| Millennium Management LLC | 964,693 | $140.4M | 0.17% | +723,950+300.7% | Added |
| Ownership Capital B.V. | 928,632 | $135.2M | 1.78% | −1,033,779−52.7% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 761,096 | $110.8M | 0.38% | +325,159+74.6% | Added |
| D. E. Shaw & Co., Inc. | 716,603 | $104.3M | 0.14% | +701,622+4,683.4% | Added |
| Geode Capital Management, LLC | 686,384 | $99.8M | 0.01% | +23,610+3.6% | Added |
| Neuberger Berman Group LLC | 659,758 | $96.0M | 0.08% | +143,167+27.7% | Added |
| Martin Currie Ltd | 610,845 | $88.9M | 2.85% | +11,423+1.9% | Added |
| Two Sigma Investments, LP | 595,318 | $86.6M | 0.26% | +481,999+425.3% | Added |
| Bank of New York Mellon Corp | 588,805 | $85.7M | 0.02% | −136,808−18.9% | Reduced |
| Northern Trust Corp | 554,860 | $80.8M | 0.01% | −4,821−0.9% | Reduced |
| Citigroup Inc | 551,935 | $80.3M | 0.08% | +259,865+89.0% | Added |
| Assenagon Asset Management S.A. | 535,812 | $78.0M | 0.25% | +508,537+1,864.5% | Added |
| Morgan Stanley | 490,422 | $71.4M | 0.01% | +327,753+201.5% | Added |
| Two Sigma Advisers, LP | 475,300 | $69.2M | 0.18% | +312,500+192.0% | Added |
| Goldman Sachs Group Inc | 445,871 | $64.9M | 0.02% | +185,824+71.5% | Added |
| Geneva Capital Management LLC | 419,314 | $61.0M | 1.18% | −8,827−2.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 412,123 | $60.0M | 0.21% | −19,258−4.5% | Reduced |
| Legal & General Group Plc | 409,739 | $59.6M | 0.02% | +9,852+2.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 373,307 | $54.3M | 0.04% | −3,028−0.8% | Reduced |
| JPMorgan Chase & Co | 357,191 | $52.0M | 0.01% | +169,506+90.3% | Added |
| Ensemble Capital Management, LLC | 334,144 | $48.6M | 4.22% | +73,725+28.3% | Added |
| Charles Schwab Investment Management Inc | 317,112 | $46.2M | 0.01% | +14,692+4.9% | Added |
| Credit Suisse AG | 300,379 | $43.7M | 0.04% | −334,480−52.7% | Reduced |
| Acadian Asset Management LLC | 299,543 | $43.6M | 0.18% | +293,786+5,103.1% | Added |
| ArrowMark Colorado Holdings LLC | 290,786 | $42.3M | 0.37% | +290,786 | New |
| Korea Investment CORP | 286,307 | $41.7M | 0.10% | +30,775+12.0% | Added |
| Raymond James & Associates | 285,290 | $41.5M | 0.04% | +453+0.2% | Added |
| Manufacturers Life Insurance Company, The | 279,108 | $40.7M | 0.03% | +221,675+386.0% | Added |
| First Republic Investment Management, Inc. | 277,138 | $40.3M | 0.09% | +15,058+5.7% | Added |
| UBS Asset Management Americas Inc | 264,983 | $38.6M | 0.02% | −4,490−1.7% | Reduced |
| Obermeyer Wood Investment Counsel, LLLP | 263,003 | $38.3M | 2.29% | +68,857+35.5% | Added |
| Deutsche Bank AG | 260,688 | $37.9M | 0.02% | +146,166+127.6% | Added |
| Alyeska Investment Group, L.P. | 254,564 | $37.0M | 0.41% | +145,429+133.3% | Added |
| Worldquant Millennium Advisors LLC | 236,073 | $34.4M | 0.84% | +236,073 | New |
| Arrowstreet Capital, Limited Partnership | 229,138 | $33.3M | 0.04% | +86,631+60.8% | Added |
| Swiss National Bank | 227,214 | $33.1M | 0.02% | +28,400+14.3% | Added |
| Dimensional Fund Advisors LP | 226,526 | $33.0M | 0.01% | +8,501+3.9% | Added |
| Handelsbanken Fonder AB | 214,630 | $31.2M | 0.17% | 00.0% | Unchanged |
| Eversept Partners, LP | 208,970 | $30.4M | 2.80% | +208,970 | New |
| Blue Whale Capital LLP | 206,200 | $30.0M | 2.88% | +46,500+29.1% | Added |
| AQR Capital Management LLC | 205,376 | $29.9M | 0.06% | +154,063+300.2% | Added |
| UBS Group AG | 205,102 | $29.9M | 0.01% | −6,827−3.2% | Reduced |
| APG Asset Management N.V. | 197,188 | $25.8M | 0.05% | −121,676−38.2% | Reduced |
| Principal Financial Group Inc | 174,244 | $25.4M | 0.02% | −2,244−1.3% | Reduced |
| Man Group plc | 168,607 | $24.5M | 0.09% | +124,645+283.5% | Added |
| Cubist Systematic Strategies, LLC | 158,574 | $23.1M | 0.20% | +145,640+1,126.0% | Added |
| Retirement Systems of Alabama | 155,862 | $22.7M | 0.08% | +135+0.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 155,306 | $22.6M | 0.05% | −17,111−9.9% | Reduced |
| Scout Investments, Inc. | 154,993 | $22.6M | 0.36% | +86,036+124.8% | Added |
| BNP Paribas Arbitrage, SA | 149,187 | $21.7M | 0.04% | +66,208+79.8% | Added |
| Citadel Advisors LLC | 146,455 | $21.3M | 0.02% | +89,531+157.3% | Added |
| Rockefeller Capital Management L.P. | 145,272 | $21.1M | 0.10% | +829+0.6% | Added |
| Voloridge Investment Management, LLC | 141,888 | $20.6M | 0.12% | +141,888 | New |
| Invesco Ltd. | 140,391 | $20.4M | 0.01% | −1,167,215−89.3% | Reduced |
| Nuveen Asset Management, LLC | 125,342 | $19.8M | 0.01% | −33,590−21.1% | Reduced |
| Rhumbline Advisers | 135,981 | $19.8M | 0.03% | +879+0.7% | Added |
| Panagora Asset Management Inc | 132,172 | $19.2M | 0.10% | +130,060+6,158.1% | Added |
| Squarepoint Ops LLC | 131,305 | $19.1M | 0.14% | +79,429+153.1% | Added |
| Parametric Portfolio Associates LLC | 130,668 | $19.0M | 0.01% | +29,929+29.7% | Added |
| Montanaro Asset Management Ltd | 130,000 | $18.9M | 2.34% | +7,850+6.4% | Added |
| Wellington Management Group LLP | 129,949 | $18.9M | 0.00% | −601,988−82.2% | Reduced |
| Schroder Investment Management Group | 112,064 | $17.4M | 0.02% | −95,002−45.9% | Reduced |
| ThornTree Capital Partners LP | 115,949 | $16.9M | 3.70% | +115,949 | New |
| Amundi | 102,997 | $15.2M | 0.01% | −1,069−1.0% | Reduced |
| Bank of Montreal | 93,176 | $14.6M | 0.01% | +33,581+56.3% | Added |
| Baillie Gifford & Co | 100,174 | $14.6M | 0.01% | +10,245+11.4% | Added |
| Price T Rowe Associates Inc | 99,706 | $14.5M | 0.00% | +71,521+253.8% | Added |
| California Public Employees Retirement System | 96,873 | $14.1M | 0.01% | −297,163−75.4% | Reduced |
| Toronto Dominion Bank | 96,235 | $14.0M | 0.02% | +20,920+27.8% | Added |
| British Columbia Investment Management Corp | 95,098 | $13.8M | 0.09% | +13,912+17.1% | Added |
| American International Group, Inc. | 86,366 | $12.6M | 0.07% | +159+0.2% | Added |
| Forte Capital LLC | 42,857 | $12.5M | 1.59% | −230−0.5% | Reduced |
| California State Teachers Retirement System | 85,140 | $12.4M | 0.02% | −5,069−5.6% | Reduced |
| Gamco Investors, Inc. Et Al | 85,000 | $12.4M | 0.11% | −2,500−2.9% | Reduced |
| Susquehanna Fundamental Investments, LLC | 80,073 | $11.7M | 0.23% | +69,588+663.7% | Added |
| Alliancebernstein L.P. | 79,059 | $11.5M | 0.00% | −1,217−1.5% | Reduced |
| Bank of America Corp | 78,403 | $11.4M | 0.00% | −72,712−48.1% | Reduced |
| Bridgewater Associates, LP | 77,097 | $11.2M | 0.05% | +20,261+35.6% | Added |
| Ameriprise Financial Inc | 76,702 | $11.1M | 0.00% | −323,623−80.8% | Reduced |
| Qube Research & Technologies Ltd | 73,045 | $10.6M | 0.10% | +38,960+114.3% | Added |
| New York State Common Retirement Fund | 72,256 | $10.5M | 0.01% | −4,334−5.7% | Reduced |
| New York State Teachers Retirement System | 66,852 | $9.73M | 0.02% | −374−0.6% | Reduced |
| State Board of Administration of Florida Retirement System | 64,909 | $9.45M | 0.02% | −681−1.0% | Reduced |
| Asset Management One Co.,Ltd. | 62,574 | $9.23M | 0.04% | +5,489+9.6% | Added |
| Great West Life Assurance Co | 59,540 | $9.05M | 0.02% | +11,543+24.0% | Added |
| Tobam | 57,930 | $8.43M | 0.42% | +57,756+33,193.1% | Added |
| Balyasny Asset Management LLC | 57,914 | $8.43M | 0.04% | +57,914 | New |
| Wells Fargo & Company | 57,305 | $8.34M | 0.00% | −15,527−21.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 57,166 | $8.32M | 0.09% | +57,166 | New |
| 2Xideas AG | 54,587 | $7.95M | 0.56% | +1,005+1.9% | Added |
| Logan Capital Management Inc | 54,434 | $7.92M | 0.38% | −749−1.4% | Reduced |
| Shell Asset Management Co | 54,404 | $7.92M | 0.19% | +22,345+69.7% | Added |