PEARL RIVER, NY
HUDSON TECHNOLOGIES INC /NYHDSN— Latest position per institution from SEC 13F filings
15
Institutional holders
32.98M
Total shares held
211.70M
Estimated value
1.65M
Avg. position size
HARTREE PARTNERS, LP
CIK 1597857
Shares
4.41M
Value
25.32M
Filed
Jun 30, 2026
WESTERLY CAPITAL MANAGEMENT, LLC
CIK 1546172
Shares
3.38M
Value
19.40M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.17M
Value
27.87M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
2.84M
Value
16.30M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.34M
Value
16.02M
Filed
Dec 31, 2025
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.97M
Value
11.29M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.65M
Value
9.50M
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
1.44M
Value
8.28M
Filed
Jun 30, 2026
SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P.
CIK 1812095
Shares
1.30M
Value
10.84M
Filed
Sep 30, 2024
ARROWMARK COLORADO HOLDINGS LLC
CIK 1483859
Shares
1.27M
Value
13.99M
Filed
Mar 31, 2024
NEW SOUTH CAPITAL MANAGEMENT INC
CIK 1044797
Shares
1.24M
Value
7.30M
Filed
Mar 31, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
1.17M
Value
6.71M
Filed
Jun 30, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.05M
Value
11.52M
Filed
Mar 31, 2024
COOPER CREEK PARTNERS MANAGEMENT LLC
CIK 1512162
Shares
997.64K
Value
8.32K
Filed
Sep 30, 2024
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
995.01K
Value
5.71M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
895.78K
Value
5.14M
Filed
Jun 30, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 1164508
Shares
777.99K
Value
4.47M
Filed
Jun 30, 2026
CASPIAN CAPITAL LP
CIK 1518999
Shares
728.31K
Value
4.18M
Filed
Jun 30, 2026
QUBE RESEARCH & TECHNOLOGIES LTD
CIK 1729829
Shares
721.85K
Value
4.14M
Filed
Jun 30, 2026
SEGALL BRYANT & HAMILL, LLC
CIK 1006378
Shares
628.34K
Value
3.69M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | HARTREE PARTNERS, LP | 1597857 | 4.41M | 25.32M | Jun 30, 2026 |
| 2 | WESTERLY CAPITAL MANAGEMENT, LLC | 1546172 | 3.38M | 19.40M | Jun 30, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 3.17M | 27.87M | Jun 30, 2024 |
| 4 | BLACKROCK, INC. | 2012383 | 2.84M | 16.30M | Jun 30, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 2.34M | 16.02M | Dec 31, 2025 |
| 6 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.97M | 11.29M | Jun 30, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.65M | 9.50M | Jun 30, 2026 |
| 8 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 1.44M | 8.28M | Jun 30, 2026 |
| 9 | SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | 1812095 | 1.30M | 10.84M | Sep 30, 2024 |
| 10 | ARROWMARK COLORADO HOLDINGS LLC | 1483859 | 1.27M | 13.99M | Mar 31, 2024 |
| 11 | NEW SOUTH CAPITAL MANAGEMENT INC | 1044797 | 1.24M | 7.30M | Mar 31, 2026 |
| 12 | AMERICAN CENTURY COMPANIES INC | 748054 | 1.17M | 6.71M | Jun 30, 2026 |
| 13 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.05M | 11.52M | Mar 31, 2024 |
| 14 | COOPER CREEK PARTNERS MANAGEMENT LLC | 1512162 | 997.64K | 8.32K | Sep 30, 2024 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 995.01K | 5.71M | Jun 30, 2026 |
| 16 | STATE STREET CORP | 93751 | 895.78K | 5.14M | Jun 30, 2026 |
| 17 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1164508 | 777.99K | 4.47M | Jun 30, 2026 |
| 18 | CASPIAN CAPITAL LP | 1518999 | 728.31K | 4.18M | Jun 30, 2026 |
| 19 | QUBE RESEARCH & TECHNOLOGIES LTD | 1729829 | 721.85K | 4.14M | Jun 30, 2026 |
| 20 | SEGALL BRYANT & HAMILL, LLC | 1006378 | 628.34K | 3.69M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.