Masimo
MASI
MASI was delisted on the 9th of June, 2026.
323 hedge funds and large institutions have $3.8B invested in Masimo in 2017 Q3 according to their latest regulatory filings, with 29 funds opening new positions, 131 increasing their positions, 117 reducing their positions, and 38 closing their positions.
12% more repeat investments, than reductions
Existing positions increased: 131 | Existing positions reduced: 117
1.3% less ownership
Funds ownership: 85.95% → 84.65% (-1.3%)
4% less funds holding
Funds holding: 336 → 323 (-13)
5% less capital invested
Capital invested by funds: $4.01B → $3.8B (-$205M)
24% less first-time investments, than exits
New positions opened: 29 | Existing positions closed: 38
25% less call options, than puts
Call options by funds: $7.9M | Put options by funds: $10.5M
67% less funds holding in top 10
Funds holding in top 10: 3 → 1 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
+$26.6M |
| 2 |
CWAM
Columbia Wanger Asset Management
Chicago,
Illinois
|
+$26.5M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
+$23.7M |
| 4 |
Millennium Management
New York
|
+$21.4M |
| 5 |
JIM
Jupiter Investment Management
London,
United Kingdom
|
+$21.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$43.2M |
| 2 |
Acadian Asset Management
Boston,
Massachusetts
|
-$18.9M |
| 3 |
SGA
Sector Gamma AS
Oslo,
Norway
|
-$18.4M |
| 4 |
O
OppenheimerFunds
New York
|
-$17.9M |
| 5 |
Two Sigma Investments
New York
|
-$17.3M |
MASI Hedge Fund Activity: Q3 2017 in Review
323 of the 4,012 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2017, worth a combined $3.8B — down 5.1% from $4.01B a quarter earlier.
Sellers outnumbered buyers: 38 funds closed out of MASI and 29 opened new positions — a net loss of 9 holders — while 117 trimmed existing stakes and 131 added.
The largest buyer was Victory Capital Management, opening a new position worth an estimated $26.6M. The largest seller was BlackRock, cutting an estimated $43.2M.
- 323 institutional investors held Masimo (MASI) as of Q3 2017, down from 336 in Q2 2017.
- Funds reported $3.8B of Masimo stock for Q3 2017, down 5.1% quarter-over-quarter.
- 29 funds opened new Masimo positions in Q3 2017 and 38 closed out, a net change of -9 holders.
- The largest Masimo buyer in Q3 2017 was Victory Capital Management, an estimated $26.6M added.
- The largest Masimo seller in Q3 2017 was BlackRock, an estimated $43.2M sold.
Based on aggregated 13F filings for Q3 2017.