Institutional Ownership
Masimo Corp
CUSIP 574795100COMMASIQ1 2026
Institutional Holders
433
13F filers
Shares Held
48.96M
Aggregate institutional
Institutional Value
$8.44B
Q1 2026
Net New Holders
+48
119 new · 71 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions119
Increased137
Decreased105
Sold out71
Institutional Holders
433 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | 4.64M | $826.13M | −4.21M | Reduced |
| 2 | Politan Capital Management LP | 4.59M | $816.36M | 0 | Held |
| 3 | Pentwater Capital Management LP | 3.18M | $564.92M | +3.18M | New |
| 4 | Barclays PLC | 2.74M | $488.07M | +2.69M | Added |
| 5 | Hbk Investments L P | 2.58M | $458.21M | +2.58M | New |
| 6 | Massachusetts Financial Services Co /Ma/ | 2.34M | $416.69M | −321.1K | Reduced |
| 7 | Fmr LLC | 1.45M | $258.06M | −6.41M | Reduced |
| 8 | State Street Corp | 1.44M | $255.73M | +22.5K | Added |
| 9 | Millennium Management LLC | 988.9K | $175.89M | +800.9K | Added |
| 10 | Goldman Sachs Group Inc | 984.2K | $175.06M | +347.5K | Added |
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