Quanterix
QTRX
132 hedge funds and large institutions have $127M invested in Quanterix in 2026 Q2 according to their latest regulatory filings, with 36 funds opening new positions, 44 increasing their positions, 30 reducing their positions, and 31 closing their positions.
1,927% more call options, than puts
Call options by funds: $1.3M | Put options by funds: $64K
47% more repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 30
16% more first-time investments, than exits
New positions opened: 36 | Existing positions closed: 31
3% more funds holding
Funds holding: 128 → 132 (+4)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
15.18% less ownership
Funds ownership: 77.64% → 62.46% (-15%)
46% less capital inflows, than outflows
Capital inflows: $30.1M | Capital outflows: $55.7M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
First Eagle Investment Management
New York
|
+$4.71M |
| 2 |
BWLSA
Blue Water Life Science Advisors
Larkspur,
California
|
+$4.32M |
| 3 |
AQR Capital Management
Greenwich,
Connecticut
|
+$4.08M |
| 4 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
+$1.58M |
| 5 |
BlackRock
New York
|
+$1.16M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Ameriprise
Minneapolis,
Minnesota
|
-$8.29M |
| 2 |
William Blair Investment Management
Chicago,
Illinois
|
-$7.33M |
| 3 |
ICM
Invenomic Capital Management
Boston,
Massachusetts
|
-$6.8M |
| 4 |
LCS
Levin Capital Strategies
New York
|
-$5.15M |
| 5 |
TC
Trium Capital
London,
United Kingdom
|
-$3.5M |
QTRX Hedge Fund Activity: Q2 2026 in Review
132 of the 8,352 institutional investors tracked by Wall St. Rank reported a position in Quanterix (QTRX) for Q2 2026, worth a combined $127M — down 1.1% from $128M a quarter earlier.
Buyers outnumbered sellers: 36 funds opened new QTRX positions and 31 closed out — a net gain of 5 holders — while 44 added to existing stakes and 30 trimmed.
The largest buyer was First Eagle Investment Management, adding an estimated $4.71M. The largest seller was Ameriprise, cutting an estimated $8.29M.
- 132 institutional investors held Quanterix (QTRX) as of Q2 2026, up from 128 in Q1 2026.
- Funds reported $127M of Quanterix stock for Q2 2026, down 1.1% quarter-over-quarter.
- 36 funds opened new Quanterix positions in Q2 2026 and 31 closed out, a net change of +5 holders.
- The largest Quanterix buyer in Q2 2026 was First Eagle Investment Management, an estimated $4.71M added.
- The largest Quanterix seller in Q2 2026 was Ameriprise, an estimated $8.29M sold.
Based on aggregated 13F filings for Q2 2026.