Masimo
MASI
MASI was delisted on the 9th of June, 2026.
2 hedge funds and large institutions have $16.2K invested in Masimo in 2026 Q2 according to their latest regulatory filings, with 0 funds opening new positions, 0 increasing their positions, 2 reducing their positions, and 446 closing their positions.
100% less funds holding
Funds holding: 452 → 2 (-450)
100% less funds holding in top 10
Funds holding in top 10: 16 → 0 (-16)
100% less capital inflows, than outflows
Capital inflows: $0 | Capital outflows: $9.7B
100% less first-time investments, than exits
New positions opened: 0 | Existing positions closed: 446
100% less repeat investments, than reductions
Existing positions increased: 0 | Existing positions reduced: 2
101.68% less ownership
Funds ownership: 101.68% → 0% (-102%)
Top Buyers
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$826M |
| 2 |
Politan Capital Management
New York
|
-$816M |
| 3 |
Pentwater Capital Management
Naples,
Florida
|
-$565M |
| 4 |
Barclays
London,
United Kingdom
|
-$488M |
| 5 |
HBK Investments
Dallas,
Texas
|
-$458M |
MASI Hedge Fund Activity: Q2 2026 in Review
2 of the 8,368 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q2 2026, worth a combined $16.2K — down 100% from $9.7B a quarter earlier.
Sellers outnumbered buyers: 446 funds closed out of MASI and 0 opened new positions — a net loss of 446 holders — while 2 trimmed existing stakes and 0 added.
The largest seller was BlackRock, exiting entirely with an estimated $826M sold.
- 2 institutional investors held Masimo (MASI) as of Q2 2026, down from 452 in Q1 2026.
- Funds reported $16.2K of Masimo stock for Q2 2026, down 100% quarter-over-quarter.
- 0 funds opened new Masimo positions in Q2 2026 and 446 closed out, a net change of -446 holders.
- The largest Masimo seller in Q2 2026 was BlackRock, an estimated $826M sold.
Based on aggregated 13F filings for Q2 2026.