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 |
|---|---|---|---|---|---|
| Ashton Thomas Private Wealth, LLC | 0 | $0 | 0.00% | −49−100.0% | Sold out |
| Innealta Capital, LLC | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Castleview Partners, LLC | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| VisionPoint Advisory Group, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Bogart Wealth, LLC | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Ancora Advisors, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Abich Financial Wealth Management LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Jones Financial Companies LLLP | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| CVA Family Office, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Pacific Capital Wealth Advisors, Inc | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| BlackRock Inc. | – | – | – | – | Not filed |
| Institutional & Family Asset Management, LLC | – | – | – | – | Not filed |
| JJJ Advisors Inc. | – | – | – | – | Not filed |