Institutional Ownership
Hudson Technologies Inc
CUSIP 444144109COMHDSNQ1 2026
13D / 13G Filings
36
Schedule 13D/13G on record
Beneficial Filers
16
Distinct reporting persons
Largest Stake
10.1%
Max % of class reported
Institutional Holders
153
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
36 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Westerly Capital Management, LLC | 13G/A | 5.9% | — | SEC |
| 2 | Dec 10, 2025 | Hartree Partners, LP | 13D | 8.7% | — | SEC |
| 3 | Jun 24, 2025 | Westerly Capital Management, LLC | 13G | 6.0% | — | SEC |
| 4 | May 14, 2025 | Hartree Partners, LP | 13G/A | 9.1% | 4.00M | SEC |
| 5 | Mar 12, 2025 | Hartree Partners, LP | 13G | 6.8% | 3.00M | SEC |
| 6 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 5.5% | 2.49M | SEC |
| 7 | Nov 4, 2024 | Vanguard Group Inc | 13G/A | 5.5% | 2.49M | SEC |
| 8 | Feb 14, 2024 | Riva Ridge Capital Management LP | 13G/A | 3.7% | 1.70M | SEC |
| 9 | Feb 12, 2024 | Cooper Creek Partners Management LLC | 13G/A | 1.5% | 666.1K | SEC |
| 10 | Jan 26, 2024 | Blackrock Inc. | 13G/A | 7.0% | 3.17M | SEC |
26 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Hudson Technologies Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Hartree Partners, LP | 3.80M | $22.34M |
| 2 | Westerly Capital Management, LLC | 3.17M | $18.67M |
| 3 | Blackrock, Inc. | 2.86M | $16.83M |
| 4 | Dimensional Fund Advisors LP | 2.15M | $12.63M |
| 5 | Renaissance Technologies LLC | 1.50M | $8.84M |
| 6 | American Century Companies Inc | 1.49M | $8.75M |
| 7 | New South Capital Management Inc | 1.24M | $7.30M |
| 8 | Geode Capital Management, LLC | 948.5K | $5.58M |
| 9 | State Street Corp | 897.9K | $5.28M |
| 10 | Arrowstreet Capital, Limited Partnership | 881.2K | $5.18M |