BILLERICA, MA
QUANTERIX CORPQTRX— Latest position per institution from SEC 13F filings
15
Institutional holders
35.40M
Total shares held
156.34M
Estimated value
1.77M
Avg. position size
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
3.54M
Value
12.47M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
3.28M
Value
11.54M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.14M
Value
41.45M
Filed
Jun 30, 2024
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
2.95M
Value
10.37M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.68M
Value
17.03M
Filed
Dec 31, 2025
BLUE WATER LIFE SCIENCE ADVISORS, LP
CIK 1789778
Shares
2.14M
Value
7.54M
Filed
Mar 31, 2026
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
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.78M
Value
6.28M
Filed
Mar 31, 2026
LORD, ABBETT & CO. LLC
CIK 728100
Shares
1.76M
Value
41.40K
Filed
Mar 31, 2024
LEVIN CAPITAL STRATEGIES, L.P.
CIK 1354821
Shares
1.46M
Value
5.15M
Filed
Mar 31, 2026
FIRST EAGLE INVESTMENT MANAGEMENT, LLC
CIK 1325447
Shares
1.30M
Value
4.58M
Filed
Mar 31, 2026
CAMBER CAPITAL MANAGEMENT LP
CIK 1444043
Shares
1.27M
Value
34.60K
Filed
Sep 30, 2023
KENT LAKE PR LLC
CIK 2037231
Shares
1M
Value
5.44M
Filed
Sep 30, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
994.76K
Value
3.50M
Filed
Mar 31, 2026
TRIUM CAPITAL LLP
CIK 1963860
Shares
994.22K
Value
3.50M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
898.28K
Value
3.16M
Filed
Mar 31, 2026
BALYASNY ASSET MANAGEMENT L.P.
CIK 1218710
Shares
767.80K
Value
5.11M
Filed
Jun 30, 2025
EMPIRE FINANCIAL MANAGEMENT COMPANY, LLC
CIK 1971875
Shares
736.07K
Value
2.59M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
689.17K
Value
2.43M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | AMERIPRISE FINANCIAL INC | 820027 | 3.54M | 12.47M | Mar 31, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 3.28M | 11.54M | Mar 31, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 3.14M | 41.45M | Jun 30, 2024 |
| 4 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 2.95M | 10.37M | Mar 31, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 2.68M | 17.03M | Dec 31, 2025 |
| 6 | BLUE WATER LIFE SCIENCE ADVISORS, LP | 1789778 | 2.14M | 7.54M | Mar 31, 2026 |
| 7 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1644956 | 2.08M | 7.33M | Mar 31, 2026 |
| 8 | INVENOMIC CAPITAL MANAGEMENT LP | 1769456 | 1.93M | 6.80M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.78M | 6.28M | Mar 31, 2026 |
| 10 | LORD, ABBETT & CO. LLC | 728100 | 1.76M | 41.40K | Mar 31, 2024 |
| 11 | LEVIN CAPITAL STRATEGIES, L.P. | 1354821 | 1.46M | 5.15M | Mar 31, 2026 |
| 12 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 1.30M | 4.58M | Mar 31, 2026 |
| 13 | CAMBER CAPITAL MANAGEMENT LP | 1444043 | 1.27M | 34.60K | Sep 30, 2023 |
| 14 | KENT LAKE PR LLC | 2037231 | 1M | 5.44M | Sep 30, 2025 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 994.76K | 3.50M | Mar 31, 2026 |
| 16 | TRIUM CAPITAL LLP | 1963860 | 994.22K | 3.50M | Mar 31, 2026 |
| 17 | STATE STREET CORP | 93751 | 898.28K | 3.16M | Mar 31, 2026 |
| 18 | BALYASNY ASSET MANAGEMENT L.P. | 1218710 | 767.80K | 5.11M | Jun 30, 2025 |
| 19 | EMPIRE FINANCIAL MANAGEMENT COMPANY, LLC | 1971875 | 736.07K | 2.59M | Mar 31, 2026 |
| 20 | MILLENNIUM MANAGEMENT LLC | 1273087 | 689.17K | 2.43M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.