Masimo
MASI
MASI was delisted on the 9th of June, 2026.
230 hedge funds and large institutions have $1.67B invested in Masimo in 2016 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 83 increasing their positions, 92 reducing their positions, and 29 closing their positions.
604% more call options, than puts
Call options by funds: $2.54M | Put options by funds: $361K
67% more funds holding in top 10
Funds holding in top 10: 3 → 5 (+2)
0.32% more ownership
Funds ownership: 81.08% → 81.4% (+0.32%)
0% more capital invested
Capital invested by funds: $1.67B → $1.67B (+$2.15M)
10% less repeat investments, than reductions
Existing positions increased: 83 | Existing positions reduced: 92
3% less funds holding
Funds holding: 236 → 230 (-6)
14% less first-time investments, than exits
New positions opened: 25 | Existing positions closed: 29
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JMPWA
JP Morgan Private Wealth Advisors
San Francisco,
California
|
+$11.4M |
| 2 |
Westfield Capital Management
Boston,
Massachusetts
|
+$11M |
| 3 |
RCAMU
Rothschild & Co Asset Management US
Stamford,
Connecticut
|
+$10.2M |
| 4 |
CIP
Chartwell Investment Partners
Berywn,
Pennsylvania
|
+$9.13M |
| 5 |
Bank of New York Mellon
New York
|
+$8.96M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CCM
Century Capital Management
Boston,
Massachusetts
|
-$16.3M |
| 2 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$10.4M |
| 3 |
BIT
BlackRock Institutional Trust
San Francisco,
California
|
-$9.52M |
| 4 |
BA
BlackRock Advisors
Wilmington,
Delaware
|
-$7.92M |
| 5 |
NAP
New Amsterdam Partners
New York
|
-$7.4M |
MASI Hedge Fund Activity: Q1 2016 in Review
230 of the 3,767 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q1 2016, worth a combined $1.67B — up 0.13% from $1.67B a quarter earlier.
Sellers outnumbered buyers: 29 funds closed out of MASI and 25 opened new positions — a net loss of 4 holders — while 92 trimmed existing stakes and 83 added.
The largest buyer was JP Morgan Private Wealth Advisors, opening a new position worth an estimated $11.4M. The largest seller was Century Capital Management, cutting an estimated $16.3M.
- 230 institutional investors held Masimo (MASI) as of Q1 2016, down from 236 in Q4 2015.
- Funds reported $1.67B of Masimo stock for Q1 2016, up 0.13% quarter-over-quarter.
- 25 funds opened new Masimo positions in Q1 2016 and 29 closed out, a net change of -4 holders.
- The largest Masimo buyer in Q1 2016 was JP Morgan Private Wealth Advisors, an estimated $11.4M added.
- The largest Masimo seller in Q1 2016 was Century Capital Management, an estimated $16.3M sold.
Based on aggregated 13F filings for Q1 2016.