RLYB · NASDAQ
Rallybio (RLYB) Stock Price & Fundamentals
Rallybio (RLYB) closed at $758.63 on Oct 9, 2026, down 0.54% from the previous close of $762.78.
Share price, past year
1Y +9.70%Monthly closing prices
| Date | Close |
|---|---|
| Oct 9, 2026 | $758.63 |
| Sep 30, 2026 | $784.19 |
| Aug 31, 2026 | $820.79 |
| Jul 31, 2026 | $795.43 |
| Jun 30, 2026 | $760.61 |
| May 29, 2026 | $759.84 |
| Apr 30, 2026 | $741.48 |
| Mar 31, 2026 | $810.43 |
| Feb 27, 2026 | $742.83 |
| Jan 30, 2026 | $743.36 |
| Dec 31, 2025 | $725.82 |
| Nov 28, 2025 | $732.28 |
| Oct 31, 2025 | $706.64 |
Key statistics
- Market cap
- $4.03B
- P/E (TTM)
- 118.7
- EPS (TTM)
- $6.39
- Revenue (TTM)
- $646.00K
- Net income (TTM)
- $45.55M
- Shares outstanding
- 5.3M
- Dividend yield
- —
- 52-week range
- $691.58 – $850.58
Rallybio's market cap is $4.03B, based on a share price of $758.63 and 5.3M shares outstanding as of Jun 30, 2026.
Financials
Rallybio reported revenue of $858.00K for fiscal 2025, up 34.91% from fiscal 2024.
Rallybio reported a net loss of $8.98M in fiscal 2025.
Annual revenue
| Fiscal year | Revenue | Growth | Net income | Net margin | EPS (diluted) | Free cash flow |
|---|---|---|---|---|---|---|
| FY2025ended Dec 31, 2025 | $858.00K | +34.9% | −$8.98M | −1,046.4% | −$1.59 | — |
| FY2024ended Dec 31, 2024 | $636.00K | — | −$57.78M | −9,084.1% | −$10.61 | −$49.28M |
| Quarter | Revenue | Net income | EPS (diluted) |
|---|---|---|---|
| Q2 FY2026ended Jun 30, 2026 | $0.00 | $43.67M | $7.53 |
| Q1 FY2026ended Mar 31, 2026 | $212.00K | −$8.28M | −$1.46 |
| Q4 FY2025ended Dec 31, 2025 | $222.00K | −$5.85M | −$0.04 |
| Q3 FY2025ended Sep 30, 2025 | $212.00K | $16.02M | $0.36 |
| Q2 FY2025ended Jun 30, 2025 | $212.00K | −$9.70M | −$0.22 |
| Q1 FY2025ended Mar 31, 2025 | $212.00K | −$9.44M | −$1.69 |
| Q4 FY2024ended Dec 31, 2024 | $38.00K | −$11.04M | −$9.51 |
| Q3 FY2024ended Sep 30, 2024 | $299.00K | −$11.47M | −$0.26 |
Company profile
- Name
- Rallybio Corp
- Ticker
- RLYB
- Exchange
- NASDAQ
- Industry (SEC SIC)
- Pharmaceutical Preparations
- Headquarters
- 234 Church Street, Suite 1020, New Haven, CT 06510
- Incorporated in
- DE
- Fiscal year ends
- December
- SEC CIK
- 0001739410
Recent SEC filings
- Sep 9, 2026
- Aug 6, 2026
- Jun 1, 2026
- May 13, 2026
- May 4, 2026
- Mar 31, 2026
- Mar 16, 2026
- Mar 2, 2026
Frequently asked questions
What is Rallybio's stock price?
Rallybio (RLYB) closed at $758.63 on Oct 9, 2026, down 0.54% from the previous close of $762.78.
What is Rallybio's market cap?
Rallybio's market cap is $4.03B, based on a share price of $758.63 and 5.3M shares outstanding as of Jun 30, 2026.
How much revenue does Rallybio make?
Rallybio reported revenue of $858.00K for fiscal 2025, up 34.91% from fiscal 2024.
What is RLYB's P/E ratio?
Rallybio's price-to-earnings ratio is 118.7, based on trailing twelve-month diluted EPS of $6.39.
Does Rallybio pay a dividend?
Rallybio's recent filings report no dividends declared over the last four quarters.
Sources and methodology
Fundamentals come from Rallybio Corp's filings with the SEC (EDGAR XBRL company facts). Fourth-quarter figures that companies don't report separately are calculated as the fiscal year minus the first three quarters. Trailing twelve-month (TTM) figures sum the latest four quarters. Prices are generated sample data for development. Last updated Oct 9, 2026. Data sources and disclosures