Clean Harbors (CLH) vs Perma-Fix Environmental Services (PESI)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Clean Harbors (CLH) has outperformed Perma-Fix Environmental Services (PESI) over the past year, gaining 36.5% versus a gain of 30.9%. Over five years, CLH leads with a +193.7% price change compared with +99.1% for PESI. Clean Harbors is the larger company by market cap ($16.73 billion vs $292.0 million), about 57.3 times the size.
On valuation, Clean Harbors trades at a lower forward P/E (31.7x vs 152.9x for Perma-Fix Environmental Services).
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | CLH | PESI |
|---|---|---|
| Share price | $316.93 | $13.76 |
| Market cap | $16.73B | $291.96M |
| 1-day change | -0.13% | -2.82% |
| YTD return | +35.16% | +9.29% |
| 1-year return | +36.48% | +30.92% |
| 5-year return | +193.67% | +99.13% |
| P/E ratio (TTM) | 38.42 | — |
| Forward P/E | 31.71 | 152.89 |
| EPS (TTM) | $8.25 | $-0.96 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $6.03B | — |
| Revenue growth (YoY) | +2.39% | — |
| Net income (latest FY) | $390.97M | — |
| Gross margin | 31.28% | — |
| Operating margin | 11.17% | — |
| Net margin | 6.48% | — |
| 52-week high | $335.94 | $21.32 |
| 52-week low | $201.34 | $8.58 |
| Distance from 52-week high | -5.66% | -35.46% |
| Analyst consensus | buy | strong_buy |
| Avg. price target upside | +13.06% | +118.02% |
| Average volume | 433.75K | 433.42K |
| Shares outstanding | 52.79M | 21.22M |
| Employees | 22,155 | 293 |
| Sector | Industrials | Industrials |
| Industry | Environmental Services | Environmental Services |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- Clean Harbors is about 57.3 times larger than Perma-Fix Environmental Services by market value ($16.73B vs $291.96M).
About Clean Harbors
CLH stock →Clean Harbors, Inc. provides environmental and industrial services in the United States and Canada.
Industrials · Environmental Services · 22,155 employees
About Perma-Fix Environmental Services
PESI stock →Perma-Fix Environmental Services, Inc., through its subsidiaries, operates as an environmental and technology know-how company in the United States. The company operates in two segments, Treatment and Services.
Industrials · Environmental Services · 293 employees
CLH vs PESI FAQ
Which is bigger, Clean Harbors or Perma-Fix Environmental Services?
Clean Harbors (CLH) is larger, with a market capitalization of $16.73B compared with $291.96M for Perma-Fix Environmental Services (PESI).
Which stock has performed better over the past year, CLH or PESI?
CLH returned +36.48% over the past 12 months, compared with +30.92% for PESI (price return, excluding dividends). Past performance does not predict future results.
Are Clean Harbors and Perma-Fix Environmental Services in the same industry?
Yes. Both are classified in the Environmental Services industry within the Industrials sector.