Equillium (EQ) vs Rallybio (RLYB)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Rallybio (RLYB) has outperformed Equillium (EQ) over the past year, gaining 277.9% versus a loss of 6.7%. Over five years, EQ leads with a -76.5% price change compared with -86.4% for RLYB. Equillium is the larger company by market cap ($91.0 million vs $89.5 million), about 1.0 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 | EQ | RLYB |
|---|---|---|
| Share price | $1.44 | $16.85 |
| Market cap | $90.99M | $89.52M |
| 1-day change | +3.24% | -0.47% |
| YTD return | -10.32% | +208.49% |
| 1-year return | -6.71% | +277.90% |
| 5-year return | -76.48% | -86.36% |
| P/E ratio (TTM) | — | 2.10 |
| EPS (TTM) | $-0.14 | $8.01 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $3.54 | $17.57 |
| 52-week low | $0.76 | $3.67 |
| Distance from 52-week high | -59.46% | -4.12% |
| Average volume | 614.50K | 22.16K |
| Shares outstanding | 63.41M | 5.31M |
| 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
- RLYB has outperformed EQ by 284.6 percentage points over the past year.
EQ vs RLYB FAQ
Which is bigger, Equillium or Rallybio?
Equillium (EQ) is larger, with a market capitalization of $90.99M compared with $89.52M for Rallybio (RLYB).
Which stock has performed better over the past year, EQ or RLYB?
RLYB returned +277.90% over the past 12 months, compared with -6.71% for EQ (price return, excluding dividends). Past performance does not predict future results.
Are Equillium and Rallybio in the same industry?
Yes. Both are classified in the Biotechnology: Pharmaceutical Preparations industry within the Health Care sector.