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.
Q2 2021 vs. Q1 2021
How the institutions holding Masimo Corp changed between Q1 2021 and Q2 2021.
All holders in Q2 2021All holders in Q1 2021
| Measure | Q1 2021 | Of which not filed for Q2 2021 | Q2 2021 | Change |
|---|---|---|---|---|
| Holders | 481 | 2 | 459 | −20 |
| Shares | 45.1M | 655.9K | 45.8M | +1.39M (+3.1%) |
| Value | $10.3B | $150.6M | $11.1B | +$909.0M (+8.9%) |
2 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so the changes leave them out.
New holders (45)
Institutions that held Masimo Corp at the end of Q2 2021 but not at the end of Q1 2021.
Sold out (65)
Institutions that held Masimo Corp at the end of Q1 2021 and filed for Q2 2021 without it.
Not filed for Q2 2021 yet (2)
Institutions that held Masimo Corp at the end of Q1 2021 and haven't filed a 13F for Q2 2021. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2021 | Value, Q1 2021 |
|---|---|---|
| Waddell & Reed Financial Inc | 562,721 | $129.2M |
| Amundi Asset Management US, Inc. | 93,130 | $21.4M |