Masimo
MASI
MASI was delisted on the 9th of June, 2026.
167 hedge funds and large institutions have $918M invested in Masimo in 2014 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 64 increasing their positions, 60 reducing their positions, and 33 closing their positions.
517% more call options, than puts
Call options by funds: $6.07M | Put options by funds: $984K
7% more repeat investments, than reductions
Existing positions increased: 64 | Existing positions reduced: 60
2.33% less ownership
Funds ownership: 84.68% → 82.35% (-2.3%)
6% less funds holding
Funds holding: 178 → 167 (-11)
16% less capital invested
Capital invested by funds: $1.09B → $918M (-$176M)
27% less first-time investments, than exits
New positions opened: 24 | Existing positions closed: 33
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$21.4M |
| 2 |
CCM
Camber Capital Management
Boston,
Massachusetts
|
+$20.1M |
| 3 |
BCA
Bernzott Capital Advisors
Camarillo,
California
|
+$14M |
| 4 |
FAM
Foundation Asset Management
White Plains,
New York
|
+$6.98M |
| 5 |
Adage Capital Partners
Boston,
Massachusetts
|
+$5.71M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$90.2M |
| 2 |
BAMCO Inc
New York
|
-$16.9M |
| 3 |
Norges Bank
Oslo,
Norway
|
-$12.9M |
| 4 |
JHIU
Janus Henderson Investors US
Denver,
Colorado
|
-$11M |
| 5 |
Boston Partners
Boston,
Massachusetts
|
-$6.99M |
MASI Hedge Fund Activity: Q3 2014 in Review
167 of the 3,455 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2014, worth a combined $918M — down 16% from $1.09B a quarter earlier.
Sellers outnumbered buyers: 33 funds closed out of MASI and 24 opened new positions — a net loss of 9 holders — while 60 trimmed existing stakes and 64 added.
The largest buyer was Massachusetts Financial Services, opening a new position worth an estimated $21.4M. The largest seller was Fidelity Investments, cutting an estimated $90.2M.
- 167 institutional investors held Masimo (MASI) as of Q3 2014, down from 178 in Q2 2014.
- Funds reported $918M of Masimo stock for Q3 2014, down 16% quarter-over-quarter.
- 24 funds opened new Masimo positions in Q3 2014 and 33 closed out, a net change of -9 holders.
- The largest Masimo buyer in Q3 2014 was Massachusetts Financial Services, an estimated $21.4M added.
- The largest Masimo seller in Q3 2014 was Fidelity Investments, an estimated $90.2M sold.
Based on aggregated 13F filings for Q3 2014.