Eric A. Prouty is Director at HUDSON TECHNOLOGIES INC /NY (HDSN). They have made 9 open-market trades across 2 companies since 2018, most recently 2026-06-17.
7 open-market purchases totalling $86K since 2018, against 2 sales. Across 7 scored buys the stock is down 16.6% at ninety days, and 20.4 points behind the S&P over the same stretch.
7 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| HDSN | 158,292 | $793K |
| AQMS | 25,622 | $43K |
| Total | $836K |
Shares reported on the most recent Form 4, priced at the 2026-06-22 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 43% | 29% | 43% |
| Avg Move | -5.0% | -9.9% | -16.6% |
| Alpha | -4.4% | -11.2% | -20.4% |
| Scored | 7 | 7 | 7 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| HDSN | BUY | 2026-05-13 | 2026-05-15 | $4.84 | $24K | +6.8% | +11.3% | +12.6% |
| HDSN | SELL | 2023-06-14 | 2023-06-15 | $9.56 | $191K | +3.2% | +2.0% | +29.9% |
| HDSN | SELL | 2022-05-09 | 2022-05-09 | $9.00 | $675K | +10.6% | +22.8% | +5.4% |
| HDSN | BUY | 2019-05-08 | 2019-05-09 | $1.89 | $9K | +7.3% | -21.5% | -73.3% |
| AQMS | BUY | 2019-01-17 | 2019-01-22 | $1.90 | $10K | +13.7% | +15.1% | +23.3% |
| HDSN | BUY | 2018-12-12 | 2018-12-12 | $1.64 | $8K | -31.1% | -17.5% | +25.2% |
| HDSN | BUY | 2018-08-15 | 2018-08-16 | $1.81 | $9K | -0.6% | -24.6% | -39.4% |
| AQMS | BUY | 2018-06-18 | 2018-06-18 | $2.85 | $14K | -22.2% | -17.0% | -30.7% |
| HDSN | BUY | 2018-05-24 | 2018-05-24 | $2.33 | $12K | -9.2% | -15.0% | -33.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.