Hudson Technologies, Inc. (HDSN) ownership: Top institutional holder: Hartree Partners, LP ($22.34M). Insider activity: Net Seller (0 buys, 13 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Hartree Partners, LP | 3800000.00 | $22.34M | 2026-03-31 |
| WESTERLY CAPITAL MANAGEMENT, LLC | 3175000.00 | $18.67M | 2026-03-31 |
| BlackRock, Inc. | 2862539.00 | $16.83M | 2026-03-31 |
| VANGUARD GROUP INC | 2338710.00 | $16.02M | 2025-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 2148311.00 | $12.63M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1660146.00 | $9.76M | 2026-03-31 |
| RENAISSANCE TECHNOLOGIES LLC | 1504250.00 | $8.84M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 1487774.00 | $8.75M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-19 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-13 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.