CUSIP 74766Q101COMQTRXQ4 2025
48 filings · latest Feb 17, 2026
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Ameriprise Financial Inc | 5.00M | $31.78M |
| 2 | Portolan Capital Management, LLC | 4.53M | $28.78M |
| 3 | Blackrock, Inc. | 3.38M | $21.47M |
| 4 | Vanguard Group Inc | 2.68M | $17.03M |
| 5 | Blue Water Life Science Advisors, LP | 2.09M | $13.31M |
| 6 | William Blair Investment Management, LLC | 2.05M | $13.02M |
| 7 | Invenomic Capital Management LP | 1.51M | $9.57M |
| 8 | Geode Capital Management, LLC | 1.07M | $6.83M |
| 4 | Aug 13, 2025 | Portolan Capital Management, LLC | 13G/A | 9.4% | 3.63M | SEC |
| 5 | Jul 17, 2025 | Blackrock, Inc. | 13G/A | 7.3% | 2.84M | SEC |
| 6 | Jul 15, 2025 | Kent Lake Partners LP | 13D/A | 4.5% | — | SEC |
| 7 | May 15, 2025 | Portolan Capital Management, LLC | 13G/A | 7.6% | 2.96M | SEC |
| 8 | May 15, 2025 | Ameriprise Financial, Inc. | 13G/A | 9.6% | 3.72M | SEC |
| 9 | May 14, 2025 | Alliancebernstein L.P. | 13G/A | 0.1% | 37.0K | SEC |
| 10 | May 7, 2025 | Ameriprise Financial, Inc. | 13G/A | 10.7% | 4.16M | SEC |
See the full Schedule 13D/13G history for Quanterix Corp.
Unlock full history| 9 |
| State Street Corp |
| 893.4K |
| $5.68M |
| 10 | Morgan Stanley | 823.0K | $5.23M |