Masimo
MASI
MASI was delisted on the 9th of June, 2026.
339 hedge funds and large institutions have $4.26B invested in Masimo in 2018 Q2 according to their latest regulatory filings, with 48 funds opening new positions, 111 increasing their positions, 130 reducing their positions, and 34 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
41% more first-time investments, than exits
New positions opened: 48 | Existing positions closed: 34
11% more capital invested
Capital invested by funds: $3.85B → $4.26B (+$417M)
4% more funds holding
Funds holding: 326 → 339 (+13)
0.29% less ownership
Funds ownership: 84.67% → 84.38% (-0.29%)
15% less repeat investments, than reductions
Existing positions increased: 111 | Existing positions reduced: 130
27% less call options, than puts
Call options by funds: $4.32M | Put options by funds: $5.91M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$171M |
| 2 |
Millennium Management
New York
|
+$41M |
| 3 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
+$29.3M |
| 4 |
Caisse de Depot et Placement du Quebec (CDPQ)
Montreal,
Quebec, Canada
|
+$20.9M |
| 5 |
Two Sigma Investments
New York
|
+$20.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Point72 Asset Management
Stamford,
Connecticut
|
-$61M |
| 2 |
BlackRock
New York
|
-$52.4M |
| 3 |
VOYA Investment Management
Atlanta,
Georgia
|
-$41.8M |
| 4 |
Northern Trust
Chicago,
Illinois
|
-$33.7M |
| 5 |
State Street
Boston,
Massachusetts
|
-$31.3M |
MASI Hedge Fund Activity: Q2 2018 in Review
339 of the 4,369 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q2 2018, worth a combined $4.26B — up 11% from $3.85B a quarter earlier.
Buyers outnumbered sellers: 48 funds opened new MASI positions and 34 closed out — a net gain of 14 holders — while 111 added to existing stakes and 130 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $171M. The largest seller was Point72 Asset Management, cutting an estimated $61M.
- 339 institutional investors held Masimo (MASI) as of Q2 2018, up from 326 in Q1 2018.
- Funds reported $4.26B of Masimo stock for Q2 2018, up 11% quarter-over-quarter.
- 48 funds opened new Masimo positions in Q2 2018 and 34 closed out, a net change of +14 holders.
- The largest Masimo buyer in Q2 2018 was Fidelity Investments, an estimated $171M added.
- The largest Masimo seller in Q2 2018 was Point72 Asset Management, an estimated $61M sold.
Based on aggregated 13F filings for Q2 2018.