BILLERICA, MA
QUANTERIX CORPQTRX— Latest position per institution from SEC 13F filings
15
Institutional holders
36.75M
Total shares held
175.04M
Estimated value
1.84M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
3.64M
Value
15.70M
Filed
Jun 30, 2026
BLUE WATER LIFE SCIENCE ADVISORS, LP
CIK 1789778
Shares
3.47M
Value
15.01M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.14M
Value
41.45M
Filed
Jun 30, 2024
FIRST EAGLE INVESTMENT MANAGEMENT, LLC
CIK 1325447
Shares
2.75M
Value
11.89M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.68M
Value
17.03M
Filed
Dec 31, 2025
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 1644956
Shares
2.08M
Value
7.33M
Filed
Mar 31, 2026
INVENOMIC CAPITAL MANAGEMENT LP
CIK 1769456
Shares
1.93M
Value
6.80M
Filed
Mar 31, 2026
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
1.90M
Value
8.21M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.80M
Value
7.78M
Filed
Jun 30, 2026
LORD, ABBETT & CO. LLC
CIK 728100
Shares
1.76M
Value
41.40K
Filed
Mar 31, 2024
LIONHUNTER CAPITAL MANAGEMENT, LLC
CIK 2137268
Shares
1.50M
Value
6.48M
Filed
Jun 30, 2026
LEVIN CAPITAL STRATEGIES, L.P.
CIK 1354821
Shares
1.46M
Value
5.15M
Filed
Mar 31, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
1.34M
Value
5.80M
Filed
Jun 30, 2026
CAMBER CAPITAL MANAGEMENT LP
CIK 1444043
Shares
1.27M
Value
34.60K
Filed
Sep 30, 2023
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.13M
Value
4.89M
Filed
Jun 30, 2026
KENT LAKE PR LLC
CIK 2037231
Shares
1M
Value
5.44M
Filed
Sep 30, 2025
TRIUM CAPITAL LLP
CIK 1963860
Shares
994.22K
Value
3.50M
Filed
Mar 31, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
987.42K
Value
4.27M
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
973.87K
Value
4.21M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
932.31K
Value
4.03M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 3.64M | 15.70M | Jun 30, 2026 |
| 2 | BLUE WATER LIFE SCIENCE ADVISORS, LP | 1789778 | 3.47M | 15.01M | Jun 30, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 3.14M | 41.45M | Jun 30, 2024 |
| 4 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 2.75M | 11.89M | Jun 30, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 2.68M | 17.03M | Dec 31, 2025 |
| 6 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1644956 | 2.08M | 7.33M | Mar 31, 2026 |
| 7 | INVENOMIC CAPITAL MANAGEMENT LP | 1769456 | 1.93M | 6.80M | Mar 31, 2026 |
| 8 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 1.90M | 8.21M | Jun 30, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.80M | 7.78M | Jun 30, 2026 |
| 10 | LORD, ABBETT & CO. LLC | 728100 | 1.76M | 41.40K | Mar 31, 2024 |
| 11 | LIONHUNTER CAPITAL MANAGEMENT, LLC | 2137268 | 1.50M | 6.48M | Jun 30, 2026 |
| 12 | LEVIN CAPITAL STRATEGIES, L.P. | 1354821 | 1.46M | 5.15M | Mar 31, 2026 |
| 13 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 1.34M | 5.80M | Jun 30, 2026 |
| 14 | CAMBER CAPITAL MANAGEMENT LP | 1444043 | 1.27M | 34.60K | Sep 30, 2023 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.13M | 4.89M | Jun 30, 2026 |
| 16 | KENT LAKE PR LLC | 2037231 | 1M | 5.44M | Sep 30, 2025 |
| 17 | TRIUM CAPITAL LLP | 1963860 | 994.22K | 3.50M | Mar 31, 2026 |
| 18 | AMERIPRISE FINANCIAL INC | 820027 | 987.42K | 4.27M | Jun 30, 2026 |
| 19 | MARSHALL WACE, LLP | 1318757 | 973.87K | 4.21M | Jun 30, 2026 |
| 20 | STATE STREET CORP | 93751 | 932.31K | 4.03M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.