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, Q3 2024
Institutional positions in Masimo Corp as of Sep 30, 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
- 362
- +13 vs. Q2 2024
- Shares held
- 50.4M
- +10.3M (+25.6%) vs. Q2 2024
- Total value
- $6.72B
- +$1.66B (+32.8%) vs. Q2 2024
- New holders
- 61
- 110 more added
- Sold out
- 48
- 122 more reduced
3 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: 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, Q3 2024
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 54,682 | $7.29M | 0.00% | +10,821+24.7% | Added |
| Erste Asset Management GmbH | 55,000 | $7.33M | 0.09% | −30,000−35.3% | Reduced |
| Montanaro Asset Management Ltd | 55,700 | $7.43M | 1.32% | +2,000+3.7% | Added |
| Citigroup Inc | 62,088 | $8.28M | 0.01% | +17,368+38.8% | Added |
| Alliancebernstein L.P. | 68,804 | $9.17M | 0.00% | +6,889+11.1% | Added |
| Price T Rowe Associates Inc | 69,716 | $9.30M | 0.00% | +1,427+2.1% | Added |
| California Public Employees Retirement System | 73,313 | $9.77M | 0.01% | −1,400−1.9% | Reduced |
| Nuveen Asset Management, LLC | 83,727 | $11.2M | 0.00% | −31,995−27.6% | Reduced |
| Gamco Investors, Inc. Et Al | 84,500 | $11.3M | 0.12% | 00.0% | Unchanged |
| Invesco Ltd. | 85,158 | $11.4M | 0.00% | +2,107+2.5% | Added |
| Swiss National Bank | 88,300 | $11.8M | 0.01% | −200−0.2% | Reduced |
| Legal & General Group Plc | 94,065 | $12.5M | 0.00% | +962+1.0% | Added |
| Twin Tree Management, LP | 94,416 | $12.6M | 0.29% | +94,416 | New |
| Principal Financial Group Inc | 102,507 | $13.7M | 0.01% | −46,144−31.0% | Reduced |
| Canada Pension Plan Investment Board | 104,300 | $13.9M | 0.01% | +104,300 | New |
| FIL Ltd | 105,708 | $14.1M | 0.01% | +29,561+38.8% | Added |
| UBS Asset Management Americas Inc | 112,471 | $15.0M | 0.00% | −8,357−6.9% | Reduced |
| Retirement Systems of Alabama | 114,260 | $15.2M | 0.06% | −29,978−20.8% | Reduced |
| Bank of America Corp | 117,845 | $15.7M | 0.00% | +2,816+2.4% | Added |
| Federated Hermes, Inc. | 118,615 | $15.8M | 0.03% | −15,646−11.7% | Reduced |
| Rhumbline Advisers | 127,014 | $16.9M | 0.02% | −759−0.6% | Reduced |
| National Bank of Canada | 132,500 | $17.7M | 0.02% | +87,675+195.6% | Added |
| Rockefeller Capital Management L.P. | 137,393 | $18.3M | 0.05% | +5,541+4.2% | Added |
| Gotham Asset Management, LLC | 153,486 | $20.5M | 0.21% | +72,727+90.1% | Added |
| JPMorgan Chase & Co | 155,853 | $20.8M | 0.00% | +7,726+5.2% | Added |
| Clearline Capital LP | 160,029 | $21.3M | 1.89% | +160,029 | New |
| Raymond James & Associates | 175,050 | $23.3M | 0.01% | −5,483−3.0% | Reduced |
| Cramer Rosenthal McGlynn LLC | 185,017 | $24.7M | 1.37% | +166,936+923.3% | Added |
| Citadel Advisors LLC | 189,549 | $25.3M | 0.03% | −37,941−16.7% | Reduced |
| Ameriprise Financial Inc | 199,861 | $26.6M | 0.01% | +108,073+117.7% | Added |
| Two Sigma Advisers, LP | 218,600 | $29.1M | 0.07% | +107,000+95.9% | Added |
| ING Groep NV | 240,900 | $32.1M | 0.19% | +141,900+143.3% | Added |
| Comerica Bank | 245,081 | $32.7M | 0.13% | +54,396+28.5% | Added |
| Norges Bank | 255,388 | $34.1M | 0.00% | +206,693+424.5% | Added |
| Northern Trust Corp | 301,041 | $40.1M | 0.01% | −16,262−5.1% | Reduced |
| Goldman Sachs Group Inc | 332,076 | $44.3M | 0.01% | +196,986+145.8% | Added |
| Ensemble Capital Management, LLC | 340,355 | $45.4M | 3.85% | −66,747−16.4% | Reduced |
| Bank of New York Mellon Corp | 341,960 | $45.6M | 0.01% | −47,804−12.3% | Reduced |
| Two Sigma Investments, LP | 342,827 | $45.7M | 0.10% | +91,871+36.6% | Added |
| Bamco Inc | 347,200 | $46.3M | 0.12% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 370,028 | $49.3M | 0.01% | −23,260−5.9% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 372,183 | $49.6M | 0.03% | −18,843−4.8% | Reduced |
| Man Group plc | 399,945 | $53.3M | 0.15% | +108,156+37.1% | Added |
| Dimensional Fund Advisors LP | 597,698 | $79.7M | 0.02% | +72,104+13.7% | Added |
| Schroder Investment Management Group | 732,621 | $97.6M | 0.10% | +203,998+38.6% | Added |
| Morgan Stanley | 736,856 | $98.2M | 0.01% | +261,053+54.9% | Added |
| Alyeska Investment Group, L.P. | 745,127 | $99.3M | 0.51% | +314,196+72.9% | Added |
| Liontrust Investment Partners LLP | 808,693 | $101.8M | 1.45% | 00.0% | Unchanged |
| Massachusetts Financial Services Co | 792,166 | $105.6M | 0.03% | +70,440+9.8% | Added |
| Geode Capital Management, LLC | 792,886 | $105.7M | 0.01% | +11,984+1.5% | Added |
| Holocene Advisors, LP | 875,159 | $116.7M | 0.47% | −162,291−15.6% | Reduced |
| Ace Management Global Ltd. | 965,504 | $128.7M | 38.42% | −95,415−9.0% | Reduced |
| Farallon Capital Management, L.L.C. | 1,258,563 | $167.8M | 0.92% | +139,000+12.4% | Added |
| Capital Research Global Investors | 1,360,328 | $181.4M | 0.04% | +303,192+28.7% | Added |
| Westfield Capital Management Co LP | 1,394,056 | $185.9M | 0.84% | +262,370+23.2% | Added |
| State Street Corp | 1,438,814 | $191.8M | 0.01% | +10,179+0.7% | Added |
| RTW Investments, LP | 1,462,400 | $195.0M | 2.82% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 1,526,488 | $203.5M | 0.12% | +372,137+32.2% | Added |
| Vanguard Group Inc | 4,520,487 | $602.7M | 0.01% | −216,864−4.6% | Reduced |
| Politan Capital Management LP | 4,714,746 | $628.6M | 35.50% | 00.0% | Unchanged |
| FMR LLC | 6,756,618 | $900.9M | 0.05% | +1,970,883+41.2% | Added |
| BlackRock, Inc. | 8,822,269 | $1.18B | 0.02% | +8,822,269 | New |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −677,677−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −202,304−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −135,719−100.0% | Sold out |
| Senator Investment Group LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| One Fin Capital Management LP | 0 | $0 | 0.00% | −95,000−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −94,798−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −40,354−100.0% | Sold out |
| APG Asset Management N.V. | 0 | $0 | 0.00% | −33,287−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −27,609−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −27,391−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −25,293−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −25,276−100.0% | Sold out |
| Pura Vida Investments, LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Simplify Asset Management Inc. | 0 | $0 | 0.00% | −21,670−100.0% | Sold out |
| Sofinnova Investments, Inc. | 0 | $0 | 0.00% | −20,161−100.0% | Sold out |
| Exome Asset Management LLC | 0 | $0 | 0.00% | −19,800−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −13,295−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −13,068−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −9,307−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −8,800−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −8,223−100.0% | Sold out |
| Juncture Wealth Strategies, LLC | 0 | $0 | 0.00% | −7,992−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −7,351−100.0% | Sold out |
| Millrace Asset Group, Inc. | 0 | $0 | 0.00% | −7,002−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −6,310−100.0% | Sold out |
| Blueshift Asset Management, LLC | 0 | $0 | 0.00% | −5,783−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −4,600−100.0% | Sold out |
| Martin Currie Ltd | 0 | $0 | 0.00% | −3,445−100.0% | Sold out |
| LRT Capital Management, LLC | 0 | $0 | 0.00% | −2,768−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −2,659−100.0% | Sold out |
| Oak Thistle LLC | 0 | $0 | 0.00% | −2,079−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −1,848−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −1,736−100.0% | Sold out |
| Kestra Private Wealth Services, LLC | 0 | $0 | 0.00% | −1,700−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −1,243−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −866−100.0% | Sold out |
| Great Lakes Retirement, Inc. | 0 | $0 | 0.00% | −259−100.0% | Sold out |
| Harel Insurance Investments & Financial Services Ltd. | 0 | $0 | 0.00% | −214−100.0% | Sold out |