Perma-Fix Environmental Services, Inc. (PESI)
PESI moved a median of +0.13% 30 minutes after news, and +0.17% by the close. How PESI actually reacts to news — the realized, point-in-time move the market made, measured across 249 labeled events over the last three years with zero look-ahead.
PESI’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.02% | 51% | 222 |
| 30-min | +0.13% | 52% | 247 |
| 60-min | +0.06% | 50% | 248 |
| to close | +0.17% | 52% | 247 |
| Middle 50% of PESI reactions | -0.94% to +1.25% |
|---|---|
| Median reaction (30-min) | +0.13% |
| Measured reactions | 249 |
Half of all Perma-Fix Environmental Services, Inc. news events land between -0.94% and +1.25% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when PESI moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to PESI's baseline. Nothing else.
Recent PESI events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K/A PERMA FIX ENVIRONMENTAL For: Sep 22 | SEC filing · Form 8-K | SEC EDGAR | +1.33% | +0.38% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Sep 22 | SEC filing · Form 8-K | SEC EDGAR | -0.26% | -5.97% | |
| Form 10-Q PERMA FIX ENVIRONMENTAL For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.80% | -13.28% | |
| Perma-Fix Awarded Master IDIQ Subcontract by Hanford Tank Waste Operations & Closure for Grouting and Disposal of Hanford Mixed Low-Level Waste | Press release | GlobeNewswire | +9.35% | +4.07% | |
| Perma-Fix Reports Second Quarter 2026 Results, Award of Hanford Master IDIQ Subcontract and Commencement of DFLAW Waste Receipts | Press release | GlobeNewswire | -2.80% | -13.28% | |
| Perma-Fix Reschedules Second Quarter 2026 Business Update Conference Call | Press release | GlobeNewswire | +4.16% | -0.63% | |
| Perma-Fix Schedules Second Quarter 2026 Business Update Conference Call | Press release | GlobeNewswire | +0.46% | +2.36% | |
| Perma-Fix and Mirion Technologies Form Strategic Partnership for DOE and Federal Nuclear Cleanup Opportunities | Press release | GlobeNewswire | -1.60% | +1.77% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Jul 22 | SEC filing · Form 8-K | SEC EDGAR | -2.81% | +8.76% | |
| Form ARS PERMA FIX ENVIRONMENTAL For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +1.11% | +11.17% | |
| Form DEF 14A PERMA FIX ENVIRONMENTAL For: Jun 12 | SEC filing · Form DEF | SEC EDGAR | +1.11% | +11.17% | |
| Form DEFA14A PERMA FIX ENVIRONMENTAL | SEC filing · Form DEFA14A | SEC EDGAR | +1.11% | +11.17% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: May 14 | SEC filing · Form 8-K | SEC EDGAR | -3.84% | -2.91% | |
| Perma-Fix Announces Pricing of $20.0 Million Public Offering of Common Stock | Press release | GlobeNewswire | +9.61% | +5.87% | |
| Perma-Fix Announces Proposed Public Offering of Common Stock | Press release | GlobeNewswire | +9.61% | +5.87% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +0.41% | -0.95% | |
| Form 10-Q PERMA FIX ENVIRONMENTAL For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.23% | -1.08% | |
| Perma-Fix Reports First Quarter 2026 Results and Strategic Outlook | Press release | GlobeNewswire | -2.23% | +9.38% | |
| Perma-Fix Schedules First Quarter 2026 Business Update Conference Call | Press release | GlobeNewswire | +1.10% | +1.41% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Apr 08 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.83% | |
| Perma-Fix to Present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium in New York City on April 9th | Press release | GlobeNewswire | +4.16% | +1.75% | |
| Perma-Fix Successfully Completes PFAS Treatment Project for U.S. Department of Energy (DOE) Contractor Using Proprietary Perma-FAS Destruction Technology | Press release | GlobeNewswire | +1.12% | -0.86% | |
| Perma-Fix Awarded $24 Million Contract for Demolition and Disposal Project at Lawrence Livermore National Laboratory | Press release | GlobeNewswire | -1.26% | -2.16% | |
| Form 10-K PERMA FIX ENVIRONMENTAL For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.20% | +7.68% | |
| Perma-Fix Reports 2025 Results as Expanded Capacity and Growing Backlog Support Hanford Cleanup Mission | Press release | GlobeNewswire | -1.35% | -2.79% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Jan 22 | SEC filing · Form 8-K | SEC EDGAR | — | +2.10% | |
| Perma-Fix Environmental Services Receives Expanded Permit for Richland Facility, Approximately Tripling Liquid Mixed Waste Processing Capacity | Press release | GlobeNewswire | +0.18% | -0.07% | |
| Perma-Fix and Enforcer One Announce Joint Distribution Agreement to Deliver End-to-End PFAS Foam Transition Solutions | Press release | GlobeNewswire | +1.36% | +4.84% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Nov 13 | SEC filing · Form 8-K | SEC EDGAR | +4.37% | +2.02% | |
| Form 10-Q PERMA FIX ENVIRONMENTAL For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.20% | +1.29% | |
| Perma-Fix Reports Financial Results and Provides Business Update for the Third Quarter of 2025 | Press release | GlobeNewswire | -0.29% | +10.41% | |
| Perma-Fix Schedules Third Quarter 2025 Business Update Conference Call | Press release | GlobeNewswire | -0.43% | -2.56% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Sep 25 | SEC filing · Form 8-K | SEC EDGAR | -0.10% | +1.51% | |
| Perma-Fix Founder Dr. Louis Centofanti Honored with Industry Innovation Award at EI Digest Gathering 2025 | Press release | GlobeNewswire | +0.00% | -0.62% | |
| Form 10-Q PERMA FIX ENVIRONMENTAL For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.19% | +5.84% | |
| Perma-Fix Reports Financial Results and Provides Business Update for the Second Quarter of 2025 | Press release | GlobeNewswire | +0.00% | +0.54% | |
| Perma-Fix Schedules Second Quarter 2025 Business Update Conference Call | Press release | GlobeNewswire | -0.79% | -1.92% | |
| Perma-Fix Environmental Services Expands PFAS Treatment Capabilities to New Waste Streams | Press release | GlobeNewswire | +2.05% | +4.88% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Jul 24 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | — | |
| Form ARS PERMA FIX ENVIRONMENTAL For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | — | -0.58% | |
| Form DEF 14A PERMA FIX ENVIRONMENTAL For: Jun 10 | SEC filing · Form DEF | SEC EDGAR | — | -0.96% | |
| Form DEFA14A PERMA FIX ENVIRONMENTAL | SEC filing · Form DEFA14A | SEC EDGAR | +0.58% | -0.58% | |
| Form 10-Q PERMA FIX ENVIRONMENTAL For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.10% | -0.16% | |
| Perma-Fix Reports Q1 2025 Results and Highlights Momentum in Hanford and PFAS Programs | Press release | GlobeNewswire | -5.35% | +8.08% | |
| Perma-Fix Schedules First Quarter 2025 Business Update Conference Call | Press release | GlobeNewswire | -1.72% | -0.22% | |
| Form 8-K PERMA FIX ENVIRONMENTAL For: Apr 17 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.24% | |
| Perma-Fix to Present at Gabelli Funds’ 11th Annual Waste & Environmental Services Symposium in New York City on April 3rd | Press release | GlobeNewswire | +0.75% | -1.36% | |
| Form 10-K PERMA FIX ENVIRONMENTAL For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -2.46% | -9.97% | |
| Perma-Fix Reports Financial Results and Provides Business Update for Full Year and Fourth Quarter of 2024 | Press release | GlobeNewswire | +1.50% | +2.10% | |
| Perma-Fix Schedules Fourth Quarter and Fiscal 2024 Business Update Conference Call | Press release | GlobeNewswire | -2.08% | -2.08% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the PESI section they belong to.
Where else PESI is measured.
PESI earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Scorpio Tankers Inc. Common Shares (STNG) | 251 | 0.00% | 50% |
| WSI INDUSTRIES (WSCI) | 250 | 0.00% | 33% |
| AMERAMEX INTL INC (AMMX) | 248 | 0.00% | 38% |
| NWPX Infrastructure, Inc. (NWPX) | 248 | -0.02% | 42% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Industrials names, measured the same way →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Perma-Fix Environmental Services, Inc.'s median reaction calculated?
Every labeled PESI news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 249 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 52% of PESI's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does PESI's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.