Hudson Technologies Inc
HDSN- Exchange
- Nasdaq
- Industry
- Wholesale-Machinery, Equipment & Supplies
- SEC CIK
- 0000925528
In the last 90 days, Hudson Technologies Inc insiders filed 9 open-market purchases and 0 sales; 151 institutions reported holding it in 13F filings for Q2 2026, worth $181.4M in total; no superinvestor holds it.
Key figures
- Insider buysLast 90 days, $5.95M in total
- 9
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −5 vs. previous quarter
- 151
- 13F valueReported value at the end of Q2 2026
- $181.4M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding HDSN, Q2 2026
No superinvestor reported holding HDSN at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Hudson Technologies Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 23, 2026 (view filing)5:03 PM ET | Sep 21-23 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +13.5K | $5.10 | +$68.9K | +0.3%5.23M after | 2 lots |
| Sep 18, 2026 (view filing)4:16 PM ET | Sep 16 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +11.1K | $5.10 | +$56.8K | +0.2%5.22M after | |
| Sep 4, 2026 (view filing)5:43 PM ET | Sep 2 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +5.32K | $5.10 | +$27.1K | +0.1%5.21M after | |
| Aug 26, 2026 (view filing)5:31 PM ET | Aug 24-25 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +100.6K | $5.50 | +$553.0K | +2.0%5.20M after | 2 lots |
| Aug 14, 2026 (view filing)5:10 PM ET | Aug 12 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +5.20K | $5.50 | +$28.6K | +0.1%5.10M after | |
| Jul 31, 2026 (view filing)4:16 PM ET | Jul 29 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +52.1K | $5.99 | +$312.1K | +1.0%5.09M after | |
| Jul 22, 2026 (view filing)4:29 PM ET | Jul 20-21 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +65.5K | $5.99 | +$392.6K | +1.3%5.04M after | 2 lots |
| Jul 8, 2026 (view filing)5:10 PM ET | Jul 6-7 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +5.23K | $5.99 | +$31.4K | +0.1%4.98M after | 2 lots |
| Jul 2, 2026 (view filing)6:00 PM ET | Jun 30-Jul 2 | 2 days | Hartree Partners, LP10% Owner | PPurchaseCommon Stock, par value $0.01 | +764.2K | $5.86 | +$4.48M | +18.2%4.97M after | 3 lots |
| May 21, 2026 (view filing) | May 13 | 8 days | Parrillo RichardDirector | PPurchase | +10.0K | $4.83 | +$48.3K | +5.4%195.7K after | Amended |
Top 10 13F holders, Q2 2026
The largest institutional positions in Hudson Technologies Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hartree Partners, LP | 4,411,889 | $25.3M | 5.45% | +611,889+16.1% | Added |
| Westerly Capital Management, LLC | 3,380,000 | $19.4M | 3.58% | +205,000+6.5% | Added |
| BlackRock, Inc. | 2,840,272 | $16.3M | 0.00% | −22,267−0.8% | Reduced |
| Dimensional Fund Advisors LP | 1,967,914 | $11.3M | 0.00% | −180,397−8.4% | Reduced |
| Vanguard Capital Management LLC | 1,654,259 | $9.50M | 0.00% | −5,887−0.4% | Reduced |
| Renaissance Technologies LLC | 1,442,115 | $8.28M | 0.01% | −62,135−4.1% | Reduced |
| American Century Companies Inc | 1,169,462 | $6.71M | 0.00% | −318,312−21.4% | Reduced |
| Geode Capital Management, LLC | 995,011 | $5.71M | 0.00% | +46,465+4.9% | Added |
| State Street Corp | 895,776 | $5.14M | 0.00% | −2,097−0.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 777,989 | $4.47M | 0.00% | −103,246−11.7% | Reduced |