Masimo
MASI
MASI was delisted on the 9th of June, 2026.
295 hedge funds and large institutions have $2.45B invested in Masimo in 2016 Q3 according to their latest regulatory filings, with 40 funds opening new positions, 112 increasing their positions, 105 reducing their positions, and 10 closing their positions.
49,900% more call options, than puts
Call options by funds: $1M | Put options by funds: $2K
300% more first-time investments, than exits
New positions opened: 40 | Existing positions closed: 10
20% more funds holding in top 10
Funds holding in top 10: 5 → 6 (+1)
17% more capital invested
Capital invested by funds: $2.09B → $2.45B (+$354M)
11% more funds holding
Funds holding: 266 → 295 (+29)
2.08% more ownership
Funds ownership: 80.72% → 82.8% (+2.1%)
7% more repeat investments, than reductions
Existing positions increased: 112 | Existing positions reduced: 105
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Acadian Asset Management
Boston,
Massachusetts
|
+$43.9M |
| 2 |
Goldman Sachs
New York
|
+$18.1M |
| 3 |
Lord, Abbett & Co
Jersey City,
New Jersey
|
+$17.6M |
| 4 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$15.4M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$14.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$38.1M |
| 2 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$17.4M |
| 3 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$14.3M |
| 4 |
Westfield Capital Management
Boston,
Massachusetts
|
-$14.1M |
| 5 |
State of Tennessee, Department of Treasury
Nashville,
Tennessee
|
-$9.87M |
MASI Hedge Fund Activity: Q3 2016 in Review
295 of the 3,759 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2016, worth a combined $2.45B — up 17% from $2.09B a quarter earlier.
Buyers outnumbered sellers: 40 funds opened new MASI positions and 10 closed out — a net gain of 30 holders — while 112 added to existing stakes and 105 trimmed.
The largest buyer was Acadian Asset Management, adding an estimated $43.9M. The largest seller was Massachusetts Financial Services, cutting an estimated $38.1M.
- 295 institutional investors held Masimo (MASI) as of Q3 2016, up from 266 in Q2 2016.
- Funds reported $2.45B of Masimo stock for Q3 2016, up 17% quarter-over-quarter.
- 40 funds opened new Masimo positions in Q3 2016 and 10 closed out, a net change of +30 holders.
- The largest Masimo buyer in Q3 2016 was Acadian Asset Management, an estimated $43.9M added.
- The largest Masimo seller in Q3 2016 was Massachusetts Financial Services, an estimated $38.1M sold.
Based on aggregated 13F filings for Q3 2016.