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.
Q4 2023 vs. Q3 2023
How the institutions holding Masimo Corp changed between Q3 2023 and Q4 2023.
All holders in Q4 2023All holders in Q3 2023
| Measure | Q3 2023 | Of which not filed for Q4 2023 | Q4 2023 | Change |
|---|---|---|---|---|
| Holders | 357 | 5 | 342 | −10 |
| Shares | 47.7M | 323.6K | 50.4M | +3.05M (+6.5%) |
| Value | $4.18B | $28.4M | $5.91B | +$1.75B (+42.3%) |
5 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so the changes leave them out.
New holders (63)
Institutions that held Masimo Corp at the end of Q4 2023 but not at the end of Q3 2023.
Sold out (73)
Institutions that held Masimo Corp at the end of Q3 2023 and filed for Q4 2023 without it.
Not filed for Q4 2023 yet (5)
Institutions that held Masimo Corp at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| First Republic Investment Management, Inc. | 261,856 | $23.0M |
| Bryn Mawr Trust Co | 52,307 | $4.59M |
| Pathstone Family Office, LLC | 3,891 | $341.2K |
| Virginia Retirement Systems Et Al | 2,900 | $254.3K |
| Quantamental Technologies LLC | 2,604 | $228.3K |