Masimo
MASI
MASI
443 hedge funds and large institutions have $9.47B invested in Masimo in 2026 Q1 according to their latest regulatory filings, with 132 funds opening new positions, 138 increasing their positions, 105 reducing their positions, and 72 closing their positions.
New
Increased
Maintained
Reduced
Closed
more call options, than puts
Call options by funds: $ | Put options by funds: $
more funds holding in top 10
Funds holding in top 10: →
more first-time investments, than exits
New positions opened: | Existing positions closed:
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
31% more capital invested
Capital invested by funds: $7.24B → $9.47B (+$2.23B)
14% more funds holding
Funds holding: 389 → 443 (+54)
4.26% less ownership
Funds ownership: 103.67% → 99.41% (-4.3%)
Holders
443
Holding in Top 10
13
Calls
$276M
Puts
$25.3M
Top Buyers
| 1 | +$498M | |
| 2 | +$422M | |
| 3 | +$404M | |
| 4 |
Millennium Management
New York
|
+$126M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
+$121M |
Top Sellers
| 1 | -$1.01B | |
| 2 | -$661M | |
| 3 | -$303M | |
| 4 |
NCMU
NAYA Capital Management (UK)
London,
United Kingdom
|
-$203M |
| 5 |
Westfield Capital Management
Boston,
Massachusetts
|
-$185M |