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 2023
Institutional positions in Masimo Corp as of Mar 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
- 428
- +31 vs. Q4 2022
- Shares held
- 45.0M
- +592.5K (+1.3%) vs. Q4 2022
- Total value
- $8.30B
- +$1.73B (+26.4%) vs. Q4 2022
- New holders
- 68
- 134 more added
- Sold out
- 37
- 143 more reduced
8 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| JPMorgan Chase & Co | 264,563 | $48.8M | 0.01% | −3,736−1.4% | Reduced |
| Raymond James & Associates | 271,400 | $50.1M | 0.04% | +9,655+3.7% | Added |
| Geneva Capital Management LLC | 307,039 | $56.7M | 1.15% | +7,184+2.4% | Added |
| Morgan Stanley | 311,260 | $57.4M | 0.01% | −171,995−35.6% | Reduced |
| Alyeska Investment Group, L.P. | 323,392 | $59.7M | 0.53% | +67,595+26.4% | Added |
| Legal & General Group Plc | 328,976 | $60.7M | 0.02% | −1,199−0.4% | Reduced |
| Ensemble Capital Management, LLC | 344,918 | $63.7M | 6.59% | +19,165+5.9% | Added |
| Charles Schwab Investment Management Inc | 357,874 | $66.0M | 0.02% | +4,227+1.2% | Added |
| Norges Bank | 371,210 | $68.5M | 0.01% | +81,131+28.0% | Added |
| Millennium Management LLC | 395,553 | $73.0M | 0.08% | +204,617+107.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 415,484 | $76.7M | 0.27% | −63,765−13.3% | Reduced |
| Northern Trust Corp | 462,734 | $85.4M | 0.02% | +1,098+0.2% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 492,946 | $91.0M | 0.07% | +108,465+28.2% | Added |
| Martin Currie Ltd | 500,495 | $92.4M | 3.30% | −44,653−8.2% | Reduced |
| Bank of New York Mellon Corp | 523,460 | $96.6M | 0.02% | −14,892−2.8% | Reduced |
| T. Rowe Price Investment Management, Inc. | 536,155 | $98.9M | 0.07% | −5,605−1.0% | Reduced |
| Farallon Capital Management, L.L.C. | 631,649 | $116.6M | 0.71% | −126,851−16.7% | Reduced |
| Schroder Investment Management Group | 698,988 | $129.0M | 0.19% | +121,711+21.1% | Added |
| Geode Capital Management, LLC | 726,018 | $133.8M | 0.02% | +22,822+3.2% | Added |
| Fundsmith LLPSuperinvestorFundsmith | 764,319 | $141.0M | 0.61% | 00.0% | Unchanged |
| Liontrust Investment Partners LLP | 952,200 | $175.7M | 2.64% | +1,500+0.2% | Added |
| RTW Investments, LP | 1,501,493 | $277.1M | 5.77% | 00.0% | Unchanged |
| Capital Research Global Investors | 1,651,550 | $304.8M | 0.09% | +700,831+73.7% | Added |
| State Street Corp | 1,711,595 | $315.9M | 0.02% | +12,836+0.8% | Added |
| Vanguard Group Inc | 4,672,351 | $862.2M | 0.02% | −183,150−3.8% | Reduced |
| Politan Capital Management LP | 4,739,963 | $874.7M | 50.83% | 00.0% | Unchanged |
| BlackRock Inc. | 5,941,856 | $1.10B | 0.03% | −15,092−0.3% | Reduced |
| FMR LLC | 6,084,956 | $1.12B | 0.10% | +628,612+11.5% | Added |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −80,516−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −47,440−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −21,000−100.0% | Sold out |
| ING Groep NV | 0 | $0 | 0.00% | −20,200−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −19,862−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −16,055−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −13,000−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −10,105−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −10,094−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −9,955−100.0% | Sold out |
| Blueshift Asset Management, LLC | 0 | $0 | 0.00% | −7,240−100.0% | Sold out |
| Cipher Capital LP | 0 | $0 | 0.00% | −3,999−100.0% | Sold out |
| PEAK6 Investments LLC | 0 | $0 | 0.00% | −3,365−100.0% | Sold out |
| Allstate Corp | 0 | $0 | 0.00% | −3,086−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −2,960−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −2,717−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −2,222−100.0% | Sold out |
| Washington Capital Management Inc | 0 | $0 | 0.00% | −2,200−100.0% | Sold out |
| Asahi Life Asset Management Co., Ltd. | 0 | $0 | 0.00% | −2,040−100.0% | Sold out |
| Capital Impact Advisors, LLC | 0 | $0 | 0.00% | −1,871−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −1,644−100.0% | Sold out |
| Ethic Inc. | 0 | $0 | 0.00% | −1,396−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −1,107−100.0% | Sold out |
| Atticus Wealth Management, LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Archer Investment Corp | 0 | $0 | 0.00% | −550−100.0% | Sold out |
| Brown Brothers Harriman & Co | 0 | $0 | 0.00% | −170−100.0% | Sold out |
| Ellevest, Inc. | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Princeton Global Asset Management LLC | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Anchor Investment Management, LLC | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| RWM Asset Management, LLC | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| M&R Capital Management Inc | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| National Pension Service | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Beaird Harris Wealth Management, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Fiduciary Alliance LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Comerica Bank | – | – | – | – | Not filed |
| Personal Capital Advisors Corp | – | – | – | – | Not filed |
| Allstate Investment Management Co | – | – | – | – | Not filed |
| Seeyond | – | – | – | – | Not filed |
| Cribstone Capital Management, LLC | – | – | – | – | Not filed |
| HealthInvest Partners AB | – | – | – | – | Not filed |
| Heritage Wealth Management, LLC | – | – | – | – | Not filed |
| CoreCap Advisors, LLC | – | – | – | – | Not filed |