Aldeyra Therapeutics (ALDX) vs Clene (CLNN)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Clene (CLNN) has outperformed Aldeyra Therapeutics (ALDX) over the past year, losing 56.8% versus a loss of 82.9%. Over five years, ALDX leads with a -88.5% price change compared with -96.8% for CLNN. Aldeyra Therapeutics is the larger company by market cap ($57.7 million vs $54.4 million), about 1.1 times the size.
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 | ALDX | CLNN |
|---|---|---|
| Share price | $0.9562 | $3.83 |
| Market cap | $57.68M | $54.44M |
| 1-day change | -0.25% | -2.30% |
| YTD return | -81.49% | -33.22% |
| 1-year return | -82.91% | -56.78% |
| 5-year return | -88.51% | -96.82% |
| EPS (TTM) | $-0.38 | $-3.52 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $5.93 | $13.50 |
| 52-week low | $0.862 | $3.25 |
| Distance from 52-week high | -83.88% | -71.63% |
| Average volume | 1.19M | 99.70K |
| Shares outstanding | 60.33M | 14.21M |
| Sector | Health Care | Health Care |
| Industry | Biotechnology: Pharmaceutical Preparations | Biotechnology: Pharmaceutical Preparations |
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
- CLNN has outperformed ALDX by 26.1 percentage points over the past year.
ALDX vs CLNN FAQ
Which is bigger, Aldeyra Therapeutics or Clene?
Aldeyra Therapeutics (ALDX) is larger, with a market capitalization of $57.68M compared with $54.44M for Clene (CLNN).
Which stock has performed better over the past year, ALDX or CLNN?
CLNN returned -56.78% over the past 12 months, compared with -82.91% for ALDX (price return, excluding dividends). Past performance does not predict future results.
Are Aldeyra Therapeutics and Clene in the same industry?
Yes. Both are classified in the Biotechnology: Pharmaceutical Preparations industry within the Health Care sector.