Duff Mark
Known title: President and CEOCIK: 0001678382
Duff Mark's purchase track record
How the stock did after each of Duff Mark's open-market purchases, measured from the purchase date. Several fills within a week count as one purchase.
Purchases measured
8
of 8 since December 17, 2021
Stock higher 6 months later
63%
3 months: 75%
Median 6-month return
+32.3%
3 months: +20.8%
Beat the S&P 500
50%
median +16.2% vs. index
| Purchase | Stock | Amount | 3 months | 6 months | S&P 500, 6 mo. |
|---|---|---|---|---|---|
| 9/11/2025 | PESI | $7K | +77.7% | +56.3% | +1.3% |
| 3/18/2025 | PESI | $22K | +39.2% | +17.3% | +17.7% |
| 9/3/2024 | PESI | $21K | +30.6% | -25.1% | +4.5% |
| 12/1/2023 | PESI | $21K | +11.0% | +47.3% | +14.9% |
| 11/22/2022 | PESI | $4K | +73.8% | +193.5% | +3.5% |
| 9/7/2022 | PESI | $7K | -25.6% | +49.6% | +0.3% |
| 5/11/2022 | PESI | $11K | +0.4% | -29.2% | -4.7% |
| 12/17/2021 | PESI | $11K | -15.0% | -20.5% | -20.5% |
Computed by MarketWall from SEC Form 4 filings and daily closing prices (close on the purchase date to the close about 3 and 6 months later). Companies that have since delisted are not included. Past results, not investment advice.
Associated companies
Transaction History
| PESI | ▲ Buy | Open Market | 897 | $7K | 9/11/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $5K | 3/21/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 650 | $5K | 3/21/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 650 | $5K | 3/21/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 500 | $4K | 3/18/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 500 | $4K | 3/18/2025 | View on chart |
| PESI | ▲ Buy | Option Exercise | 25,000 | $79K | 1/8/2025 | View on chart |
| PESI | ▼ Sell | Tax Withholding | 7,443 | $79K | 1/8/2025 | View on chart |
| PESI | ▲ Buy | Open Market | 500 | $5K | 9/4/2024 | View on chart |
| PESI | ▲ Buy | Open Market | 350 | $3K | 9/4/2024 | View on chart |
| PESI | ▲ Buy | Open Market | 500 | $5K | 9/3/2024 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $8K | 9/3/2024 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $5K | 12/1/2023 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $5K | 12/1/2023 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $5K | 12/1/2023 | View on chart |
| PESI | ▲ Buy | Open Market | 750 | $5K | 12/1/2023 | View on chart |
| PESI | ▲ Buy | Option Exercise | 100,000 | $365K | 5/22/2023 | View on chart |
| PESI | ▼ Sell | Tax Withholding | 33,032 | $365K | 5/22/2023 | View on chart |
| PESI | ▲ Buy | Open Market | 1,000 | $4K | 11/22/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 500 | $2K | 9/7/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 1,000 | $5K | 9/7/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 922 | $5K | 5/12/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 1,000 | $6K | 5/12/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 78 | $437 | 5/11/2022 | View on chart |
| PESI | ▲ Buy | Option Exercise | 50,000 | $199K | 5/9/2022 | View on chart |
| PESI | ▼ Sell | Tax Withholding | 33,474 | $199K | 5/9/2022 | View on chart |
| PESI | ▲ Buy | Open Market | 600 | $4K | 12/20/2021 | View on chart |
| PESI | ▲ Buy | Open Market | 1,000 | $7K | 12/17/2021 | View on chart |
| PESI | ▲ Buy | Open Market | 37 | $241 | 12/17/2021 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 29, 2026
PESI Featured in List of Stocks Walking a Fine Line
Perma-Fix Environmental Services (PESI) was included in a recent article highlighting three stocks under $50 that are considered to be walking a fine line. The stock is currently trading near its support level of $12.49, which it has touched ten times recently. This price point sits well below the average analyst target of $30.00 and the upper end of its 52-week range of $21.32.
PESI Featured in List of Stocks Walking a Fine Line. Perma-Fix Environmental Services (PESI) was included in a recent article highlighting three stocks under $50 that are considered to be walking a fine line. The stock is currently trading near its support level of $12.49, which it has touched ten times recently. This price point sits well below the average analyst target of $30.00 and the upper end of its 52-week range of $21.32.