PESI — PERMA FIX ENVIRONMENTAL SERVICES INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Measured signals that fired on PESI
| date | signal | measured base rate |
|---|---|---|
| 2026-08-11 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-04 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-17 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-06-29 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-05-18 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-13 | Shelton Larry Director | Option exercise | 2.4K | 4.60 | 11.0K |
| 2026-07-01 | Grumski Joseph Timothy Director | Grant or award | 1.5K | 10.72 | 16.4K |
| 2026-07-01 | REEDER JOE Director | Grant or award | 1.5K | 10.72 | 15.6K |
| 2026-07-01 | Shelton Larry Director | Grant or award | 1.4K | 10.72 | 14.6K |
| 2026-07-01 | Bostick Thomas Director | Grant or award | 1.2K | 10.72 | 13.0K |
| 2026-07-01 | ZWECKER MARK A Director | Grant or award | 1.2K | 10.72 | 12.5K |
| 2026-07-01 | Wamp Zach Paul Director | Grant or award | 849 | 10.72 | 9.1K |
| 2026-07-01 | Duggan Kerry C Director | Grant or award | 819 | 10.72 | 8.8K |
| 2026-04-01 | Grumski Joseph Timothy Director | Grant or award | 2.1K | 8.02 | 16.9K |
| 2026-04-01 | REEDER JOE Director | Grant or award | 1.9K | 8.02 | 15.1K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 12.5M | 1.2M |
| MAK CAPITAL ONE LLC | 9.8M | 918.7K |
| Prescott Group Capital Management, L.L.C. | 8.3M | 777.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | 8.1M | 759.4K |
| GEODE CAPITAL MANAGEMENT, LLC | 4.6M | 432.7K |
| HEARTLAND ADVISORS INC | 4.3M | 400.0K |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 3.8M | 356.0K |
| STATE STREET CORP | 3.6M | 335.5K |
| Potomac Capital Management, Inc. | 3.2M | 296.7K |
| GROUP ONE TRADING LLC | 2.6M | 247.7K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
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