Masimo
MASI
MASI was delisted on the 9th of June, 2026.
362 hedge funds and large institutions have $6.72B invested in Masimo in 2024 Q3 according to their latest regulatory filings, with 60 funds opening new positions, 110 increasing their positions, 123 reducing their positions, and 48 closing their positions.
89% more call options, than puts
Call options by funds: $80.4M | Put options by funds: $42.6M
25% more first-time investments, than exits
New positions opened: 60 | Existing positions closed: 48
8% more capital invested
Capital invested by funds: $6.24B → $6.72B (+$484M)
3% more funds holding
Funds holding: 352 → 362 (+10)
1.2% more ownership
Funds ownership: 93.14% → 94.33% (+1.2%)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
11% less repeat investments, than reductions
Existing positions increased: 110 | Existing positions reduced: 123
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$229M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$43.2M |
| 3 |
Alyeska Investment Group
Chicago,
Illinois
|
+$36.5M |
| 4 |
Capital Research Global Investors
Los Angeles,
California
|
+$35.2M |
| 5 |
Westfield Capital Management
Boston,
Massachusetts
|
+$30.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Thrivent Financial for Lutherans
Minneapolis,
Minnesota
|
-$140M |
| 2 |
Millennium Management
New York
|
-$84.1M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
-$78.6M |
| 4 |
BlackRock
New York
|
-$61.4M |
| 5 |
ECM
ExodusPoint Capital Management
New York
|
-$25.5M |
MASI Hedge Fund Activity: Q3 2024 in Review
362 of the 6,965 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2024, worth a combined $6.72B — up 7.8% from $6.24B a quarter earlier.
Buyers outnumbered sellers: 60 funds opened new MASI positions and 48 closed out — a net gain of 12 holders — while 110 added to existing stakes and 123 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $229M. The largest seller was Thrivent Financial for Lutherans, cutting an estimated $140M.
- 362 institutional investors held Masimo (MASI) as of Q3 2024, up from 352 in Q2 2024.
- Funds reported $6.72B of Masimo stock for Q3 2024, up 7.8% quarter-over-quarter.
- 60 funds opened new Masimo positions in Q3 2024 and 48 closed out, a net change of +12 holders.
- The largest Masimo buyer in Q3 2024 was Fidelity Investments, an estimated $229M added.
- The largest Masimo seller in Q3 2024 was Thrivent Financial for Lutherans, an estimated $140M sold.
Based on aggregated 13F filings for Q3 2024.