Masimo
MASI
MASI was delisted on the 9th of June, 2026.
385 hedge funds and large institutions have $6.66B invested in Masimo in 2019 Q2 according to their latest regulatory filings, with 50 funds opening new positions, 136 increasing their positions, 139 reducing their positions, and 61 closing their positions.
7% more capital invested
Capital invested by funds: $6.22B → $6.66B (+$442M)
7% more call options, than puts
Call options by funds: $11.3M | Put options by funds: $10.6M
0.66% less ownership
Funds ownership: 84.61% → 83.96% (-0.66%)
2% less repeat investments, than reductions
Existing positions increased: 136 | Existing positions reduced: 139
5% less funds holding
Funds holding: 405 → 385 (-20)
18% less first-time investments, than exits
New positions opened: 50 | Existing positions closed: 61
80% less funds holding in top 10
Funds holding in top 10: 5 → 1 (-4)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$133M |
| 2 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$99.3M |
| 3 |
Invesco
Atlanta,
Georgia
|
+$94.6M |
| 4 |
N
Nuveen
Charlotte,
North Carolina
|
+$23.9M |
| 5 |
Handelsbanken Fonder
Stockholm,
Sweden
|
+$18.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$73.2M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$62.5M |
| 3 |
JIM
Jupiter Investment Management
London,
United Kingdom
|
-$41M |
| 4 |
Morgan Stanley
New York
|
-$24.8M |
| 5 |
EOJOAM
E. Ohman J:or Asset Management
Stockholm,
Sweden
|
-$23.2M |
MASI Hedge Fund Activity: Q2 2019 in Review
385 of the 4,605 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q2 2019, worth a combined $6.66B — up 7.1% from $6.22B a quarter earlier.
Sellers outnumbered buyers: 61 funds closed out of MASI and 50 opened new positions — a net loss of 11 holders — while 139 trimmed existing stakes and 136 added.
The largest buyer was Wellington Management Group, adding an estimated $133M. The largest seller was Deutsche Bank, cutting an estimated $73.2M.
- 385 institutional investors held Masimo (MASI) as of Q2 2019, down from 405 in Q1 2019.
- Funds reported $6.66B of Masimo stock for Q2 2019, up 7.1% quarter-over-quarter.
- 50 funds opened new Masimo positions in Q2 2019 and 61 closed out, a net change of -11 holders.
- The largest Masimo buyer in Q2 2019 was Wellington Management Group, an estimated $133M added.
- The largest Masimo seller in Q2 2019 was Deutsche Bank, an estimated $73.2M sold.
Based on aggregated 13F filings for Q2 2019.