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MASI
Masimo
MASI
MASI
Delisted
MASI was delisted on the 9th of June, 2026.
394 hedge funds and large institutions have $9.04B invested in Masimo in 2025 Q1 according to their latest regulatory filings, with 79 funds opening new positions, 136 increasing their positions, 118 reducing their positions, and 46 closing their positions.
New
Increased
Maintained
Reduced
Closed
more first-time investments, than exits
New positions opened: | Existing positions closed:
more call options, than puts
Call options by funds: $ | Put options by funds: $
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more funds holding
Funds holding: →
6% more capital invested
Capital invested by funds: $8.5B → $9.04B (+$535M)
4.37% more ownership
Funds ownership: 96.02% → 100.39% (+4.4%)
0% more funds holding in top 10
Funds holding in top 10: 4 → 4 (0)
Holders
394
Holding in Top 10
4
Calls
$7.35M
Puts
$5.71M
Top Buyers
| 1 | +$204M | |
| 2 | +$195M | |
| 3 | +$86.3M | |
| 4 |
Artisan Partners
Milwaukee,
Wisconsin
|
+$51.9M |
| 5 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$40.4M |
Top Sellers
| 1 | -$69.2M | |
| 2 | -$67.9M | |
| 3 | -$65.6M | |
| 4 |
Millennium Management
New York
|
-$47.4M |
| 5 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$36.7M |