Masimo
MASI
MASI was delisted on the 9th of June, 2026.
171 hedge funds and large institutions have $1.33B invested in Masimo in 2014 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 70 increasing their positions, 53 reducing their positions, and 14 closing their positions.
79% more first-time investments, than exits
New positions opened: 25 | Existing positions closed: 14
32% more repeat investments, than reductions
Existing positions increased: 70 | Existing positions reduced: 53
5% more funds holding
Funds holding: 163 → 171 (+8)
4% less capital invested
Capital invested by funds: $1.38B → $1.33B (-$52.1M)
48% less call options, than puts
Call options by funds: $402K | Put options by funds: $767K
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$66.3M |
| 2 |
CCM
Consonance Capital Management
New York
|
+$27.2M |
| 3 |
GCM
Geneva Capital Management
Milwaukee,
Wisconsin
|
+$9.11M |
| 4 |
Boston Partners
Boston,
Massachusetts
|
+$8.49M |
| 5 |
Bank of New York Mellon
New York
|
+$8.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BCM
Bares Capital Management
Austin,
Texas
|
-$62.9M |
| 2 |
ACH
ArrowMark Colorado Holdings
Denver,
Colorado
|
-$13.5M |
| 3 |
SAM
Sentinel Asset Management
Montpelier,
Vermont
|
-$13.1M |
| 4 |
Schroder Investment Management Group
London,
United Kingdom
|
-$7.22M |
| 5 |
SGA
Sector Gamma AS
Oslo,
Norway
|
-$7.11M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
GTC
176
Ghost Tree Capital
New York
| – | -$1.02M | -35,000 | Closed |
|
|
CCM
177
Cadence Capital Management
Boston,
Massachusetts
| – | -$587K | -20,080 | Closed |
|
|
SIM
178
Spark Investment Management
New York
| – | -$505K | -17,300 | Closed |
|
|
SLG
179
Stanley-Laman Group
Berwyn,
Pennsylvania
| – | -$250K | -8,560 | Closed |
|
|
TIM
180
Thompson Investment Management
Madison,
Wisconsin
| – | -$219K | -7,500 | Closed |
|
|
COPPSERS
181
Commonwealth of Pennsylvania Public School Employees Retirement System
Harrisburg,
Pennsylvania
| – | -$211K | -7,220 | Closed |
|
182
KeyBank National Association
Cleveland,
Ohio
| – | -$202K | -6,900 | Closed |
|
|
ASN
183
Advisory Services Network
Atlanta,
Georgia
| – | -$7K | -230 | Closed |
|
|
NES
184
New England Securities
New York
| – | +$29 | +1 | New |
|
MASI Hedge Fund Activity: Q1 2014 in Review
171 of the 3,464 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q1 2014, worth a combined $1.33B — down 3.8% from $1.38B a quarter earlier.
Buyers outnumbered sellers: 25 funds opened new MASI positions and 14 closed out — a net gain of 11 holders — while 70 added to existing stakes and 53 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $66.3M. The largest seller was Bares Capital Management, exiting entirely with an estimated $62.9M sold.
- 171 institutional investors held Masimo (MASI) as of Q1 2014, up from 163 in Q4 2013.
- Funds reported $1.33B of Masimo stock for Q1 2014, down 3.8% quarter-over-quarter.
- 25 funds opened new Masimo positions in Q1 2014 and 14 closed out, a net change of +11 holders.
- The largest Masimo buyer in Q1 2014 was Fidelity Investments, an estimated $66.3M added.
- The largest Masimo seller in Q1 2014 was Bares Capital Management, an estimated $62.9M sold.
Based on aggregated 13F filings for Q1 2014.