Masimo
MASI
MASI was delisted on the 9th of June, 2026.
418 hedge funds and large institutions have $6.54B invested in Masimo in 2022 Q3 according to their latest regulatory filings, with 60 funds opening new positions, 109 increasing their positions, 183 reducing their positions, and 50 closing their positions.
135% more call options, than puts
Call options by funds: $11.8M | Put options by funds: $5.03M
20% more first-time investments, than exits
New positions opened: 60 | Existing positions closed: 50
13% more capital invested
Capital invested by funds: $5.81B → $6.54B (+$739M)
8.39% more ownership
Funds ownership: 79.84% → 88.23% (+8.4%)
0% more funds holding
Funds holding: 416 → 418 (+2)
20% less funds holding in top 10
Funds holding in top 10: 5 → 4 (-1)
40% less repeat investments, than reductions
Existing positions increased: 109 | Existing positions reduced: 183
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PCM
Politan Capital Management
New York
|
+$679M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$256M |
| 3 |
FCM
Farallon Capital Management
San Francisco,
California
|
+$55.8M |
| 4 |
Canada Pension Plan Investment Board
Toronto Ontario,
Ontario, Canada
|
+$37.1M |
| 5 |
Barclays
London,
United Kingdom
|
+$32.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Nomura Holdings
Tokyo,
Japan
|
-$243M |
| 2 |
Morgan Stanley
New York
|
-$99.5M |
| 3 |
AQR Capital Management
Greenwich,
Connecticut
|
-$56.6M |
| 4 |
BlackRock
New York
|
-$52.7M |
| 5 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$51.2M |
MASI Hedge Fund Activity: Q3 2022 in Review
418 of the 5,828 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2022, worth a combined $6.54B — up 13% from $5.81B a quarter earlier.
Buyers outnumbered sellers: 60 funds opened new MASI positions and 50 closed out — a net gain of 10 holders — while 109 added to existing stakes and 183 trimmed.
The largest buyer was Politan Capital Management, opening a new position worth an estimated $679M. The largest seller was Nomura Holdings, exiting entirely with an estimated $243M sold.
- 418 institutional investors held Masimo (MASI) as of Q3 2022, up from 416 in Q2 2022.
- Funds reported $6.54B of Masimo stock for Q3 2022, up 13% quarter-over-quarter.
- 60 funds opened new Masimo positions in Q3 2022 and 50 closed out, a net change of +10 holders.
- The largest Masimo buyer in Q3 2022 was Politan Capital Management, an estimated $679M added.
- The largest Masimo seller in Q3 2022 was Nomura Holdings, an estimated $243M sold.
Based on aggregated 13F filings for Q3 2022.