Stocks · Healthcare · Biotechnology
Rallybio Corporation RLYB
$16.90 -1.05% Close, Oct 5, 2026 · NASDAQ · Market cap $90.6M
Strong trendInexpensive vs sector
Next earnings report: Nov 5, 2026
Scroll or pinch to zoom, drag to move. Daily prices adjusted for splits. Markers: E = earnings (green beat, red miss), S = split, D = dividend.
Three things to know
- Operating margin widened to -3672.3% from -5703.2% a year earlier.
- Over the past year the stock returned +313.2%, ahead of the S&P 500 by 297.4 percentage points.
- The stock is in an uptrend: above its 200-day average for 159 trading days, with the 50-day average above the 200-day.
PromtFinance scores
Each score is a percentile within the Healthcare sector (0–100). Under each score: how the stock ranks in its sector on every component. As of Oct 6, 2026.
How fast revenue, earnings and cash flow are growing.
- Revenue growth (TTM, YoY)Bottom 17%
- Revenue growth accelerationBottom 13%
Returns on capital, margins, earnings quality and balance-sheet strength.
- Return on invested capitalBottom 47%
- Gross marginBottom 2%
- Operating marginBottom 8%
- Cash conversion (OCF / net income)Bottom 16%
- Accruals (lower is better)Bottom 5%
- Net debt / EBITDA (lower is better)Top 10%
How cheap the shares are relative to earnings, cash flow and their own history.
- Earnings yieldTop 1%
- Free-cash-flow yieldTop 2%
Strength and persistence of the price trend, including versus the S&P 500.
- 12-month return excluding last monthTop 3%
- 6-month returnTop 8%
- 1-year return vs S&P 500Top 4%
- Distance from 52-week highTop 7%
- Trend checklist (0–4)Top 26%
Earnings surprises and analyst sentiment (estimate-revision history is being collected).
- Average EPS surprise, last 4 quartersBottom 23%
- Consecutive EPS beatsBottom 49%
- Share of analysts rating BuyBottom 12%
Low volatility, shallow drawdowns, low market sensitivity and modest leverage.
- Volatility, 60 days (lower is better)Top 2%
- Maximum drawdown, 3 yearsBottom 7%
- Beta vs S&P 500 (lower is better)Top 46%
- Net debt / EBITDA (lower is better)Top 10%
What changed
Latest four quarters versus the same period a year earlier (growth: versus one quarter earlier).
| Measure | Before | Now | |
|---|---|---|---|
| Revenue growth (YoY) | 1.2% | -15.1% | ↓ |
| Gross margin | -2537.2% | -1107.6% | ↑ |
| Operating margin | -5703.2% | -3672.3% | ↑ |
| FCF margin | -5517.9% | 4077.4% | ↑ |
Fundamental momentum
| Measure | Now (TTM) | Year / quarter before | Sector rank | |
|---|---|---|---|---|
| Revenue growth (TTM, YoY) | -15.1% | 1.2% | ↓ | Bottom 17% |
| Gross margin | -1107.6% | -2537.2% | ↑ | Bottom 2% |
| Operating margin | -3672.3% | -5703.2% | ↑ | Bottom 8% |
| Net margin | 7051.2% | -5473.3% | ↑ | — |
| Free-cash-flow margin | 4077.4% | -5517.9% | ↑ | — |
| Return on invested capital | -24.4% | — | Bottom 47% |
Quality of earnings and balance sheet
- Cash conversion (OCF / net income)Above 1× means profits are backed by cash.
- 0.58×
- Accruals (net income − OCF) / assetsLower is better; high accruals can signal weaker earnings quality.
- 19.6%
- Stock-based compensation / revenueA cost to shareholders through dilution.
- 442.4%
- Net debt / EBITDABelow 1× is conservative; above 3× is high leverage.
- -3.44×
Shareholder returns
- Dividend yield (dividends paid, TTM)
- 0.00%
- Net buyback yield (TTM)
- -0.02%
- Shareholder yield
- -0.02%
- Share count change, 1 year
- +3.4%
- Share count change, 3-year CAGR
- +4.7%
Shareholder yield = dividends + net buybacks over the last four quarters, divided by market cap.
Based on the four quarters through Jun 30, 2026 (filed Aug 6, 2026).
Earnings and expectations
Earnings momentum
- Consecutive EPS beats
- 1
- Beats in the last 8 reports
- 5 of 8
- Average EPS surprise, last 4
- -15.7%
- Average 2-day reaction, last 8
- -0.7%
- Positive 20 days after report
- 6 of 8
Analysts
- Analysts with a rating
- 9
- Share rating Buy or Strong Buy
- 44%
- Consensus rating
- Hold
How the stock reacted to recent reports
| Report date | EPS surprise | 2 days | 5 days | 20 days | 60 days |
|---|---|---|---|---|---|
| Aug 6, 2026 | +14.8% | +0.3% | +2.8% | +5.0% | — |
| May 13, 2026 | -21.7% | +2.3% | +1.1% | +13.6% | +15.2% |
| Mar 12, 2026 | +10.5% | -3.8% | -6.2% | -17.7% | +59.8% |
| Nov 6, 2025 | -66.4% | +2.2% | +11.8% | +6.6% | +0.2% |
| Aug 7, 2025 | +10.2% | -3.1% | +1.4% | +11.1% | +32.2% |
| May 8, 2025 | +0.0% | -2.5% | +3.3% | +12.9% | +76.3% |
| Mar 13, 2025 | +7.4% | -0.4% | +10.6% | -62.0% | -40.0% |
| Nov 7, 2024 | +26.1% | -1.0% | +9.0% | +6.0% | -12.1% |
Returns from the close before each report. Past reactions do not determine future ones.
Earnings history
| Report date | EPS | Estimate | Surprise | Revenue |
|---|---|---|---|---|
| Aug 6, 2026 | -$1.09 | -$1.28 | +14.8% | — |
| May 13, 2026 | -$1.46 | -$1.20 | -21.7% | $212,000 |
| Mar 12, 2026 | -$1.11 | -$1.24 | +10.5% | $222,000 |
| Nov 6, 2025 | -$2.84 | -$1.71 | -66.4% | $212,000 |
| Aug 7, 2025 | -$1.76 | -$1.96 | +10.2% | $212,000 |
| May 8, 2025 | -$1.68 | -$1.68 | +0.0% | $212,000 |
| Mar 13, 2025 | -$2.00 | -$2.16 | +7.4% | $38,000 |
| Nov 7, 2024 | -$2.08 | -$2.82 | +26.1% | $299,000 |
Valuation in context
| Multiple | Now | 5-year median | 5-year percentile | Sector rank (cheapness) |
|---|---|---|---|---|
| P/E (trailing) | 2.2× | — | — | Top 1% |
| Free-cash-flow yield | 29.06% | — | — | Top 2% |
| Earnings yield | 46.15% | — | — | Top 1% |
Technical state
Trend checklist
- ✗ Price above 20-day average
- ✓ Price above 50-day average
- ✓ Price above 200-day average
- ✓ 50-day average above 200-day
- ✗ MACD histogram positive
Trend quality
- Days above the 50-day average
- 6
- Days above the 200-day average
- 159
- 50-day average slope (20 days)
- +2.0%
- 200-day average slope (20 days)
- +10.7%
- Distance from 50-day average
- +1.1%
- Distance from 200-day average
- +41.9%
- RSI (14)
- 50.5
- Relative volume
- 0.47×
Risk and drawdowns
- Volatility, 60 days (annualized)
- 22.0%
- Volatility vs own 5-year history
- 2th percentile · Low for this stock
- Beta vs S&P 500 (2 years, weekly)
- 1.05
- Correlation with S&P 500
- 0.17
- Current drawdown from 1-year high
- -1.9%
- Maximum drawdown, 3 years
- -94.3%
Largest declines in the past six years
| From peak | To low | Decline | Length | Recovery |
|---|---|---|---|---|
| Aug 5, 2021 | Apr 8, 2025 | -98.9% | 922 days | Not yet recovered |
Declines of 10% or more from a closing high, measured on daily closes.
Financial statements
- Market cap
- $90.6M
- P/E (TTM)
- 2.2
- EPS, diluted (TTM)
- $7.80
- Revenue (TTM)
- $646,000
- 52-week range
- $3.67 – $17.57
| FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 | |
|---|---|---|---|---|---|
| Revenue | $0 | $0 | $0 | $636,000 | $858,000 |
| Gross profit | -$109,000 | $0 | -$150,000 | -$38.9M | $766,000 |
| Operating income | -$45.6M | -$67.9M | -$78.9M | -$60.5M | -$28.1M |
| Net income | -$47.0M | -$66.7M | -$74.6M | -$57.8M | -$9.0M |
| EPS (diluted) | -$11.68 | -$16.72 | -$14.72 | -$10.64 | -$1.59 |
| Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 | |
|---|---|---|---|---|---|---|---|---|
| Revenue | $299,000 | $38,000 | $212,000 | $212,000 | $212,000 | $222,000 | $212,000 | $0 |
| Net income | -$11.5M | -$11.0M | -$9.4M | -$9.7M | $16.0M | -$5.9M | -$8.3M | $43.7M |
| EPS (diluted) | -$2.08 | -$2.00 | -$1.68 | -$1.76 | $2.84 | -$1.11 | -$1.46 | $7.53 |
| FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 | |
|---|---|---|---|---|---|
| Operating cash flow | -$45.5M | -$57.3M | -$60.3M | -$49.3M | -$29.8M |
| Capital expenditure | -$333,000 | -$54,000 | -$12,000 | $0 | $0 |
| Free cash flow | -$45.9M | -$57.3M | -$60.3M | -$49.3M | -$29.8M |
| Dividends paid | $0 | $0 | $0 | $0 | $0 |
| Net share buybacks | $86.2M | $51.5M | $143,000 | $5.4M | $16,000 |
Cash outflows are shown as negative numbers.
- Cash and short-term investments
- $92.8M
- Total assets
- $98.1M
- Total liabilities
- $3.6M
- Total debt
- $0
- Net debt
- -$92.8M
- Shareholders’ equity
- $94.5M
As of Jun 30, 2026 (filed Aug 6, 2026).
Short interest
- Shares sold short
- 55,556
- Days to cover
- 5.04
- Change vs previous report
- +1.1%
FINRA short interest, settlement date Sep 15, 2026.
Stock splits
- Feb 6, 2026
- 1-for-8