Rallybio Corporation is a clinical-stage biotechnology firm dedicated to discovering and bringing to market transformative therapies for individuals facing severe and uncommon illnesses.
Rallybio stock last closed at $17.19, up 0.17% from the previous day, and has increased 258.57% in one year. It has overperformed other stocks in the Biotechnology industry by 2.8 percentage points. Rallybio stock is currently +368.39% from its 52-week low of $3.67, and -2.19% from its 52-week high of $17.57.
At the moment, there are 5.31M RLYB shares outstanding. The market cap of RLYB is $91.29M. In the past 24 hours, 16,100 RLYB shares were traded.
How to Buy Rallybio Stock
Wondering how to invest in Rallybio stock? Here's how.
Choose where to buy Rallybio stock: You need to choose an online brokerage, but don't worry - we've tried dozens of online brokerages and apps to help you figure out where to buy Rallybio stock.
Create a brokerage account: Sign up for 0% fee trading with the highest-rated brokerage we've identified.
Fund your brokerage account: Pick your method of payment and add your information.
Evaluate Rallybio stock: The Rallybio ticker symbol is RLYB. Is Rallybio stock a good investment? Should you buy shares of RLYB? How do RLYB's underlying business fundamentals look? Do top analysts think Rallybio is a good buy? Why has RLYB's stock price moved recently? (Hint: Our stock market research tools can help you decide if RLYB is a good stock to buy).
Place your RLYB purchase: Decide if you will purchase RLYB shares at the current market price or use a limit order to buy RLYB shares at a particular price.
Track your investment in RLYB: Create a watchlist to keep tabs on your position in Rallybio stock.
Step 1: Choose where to buy Rallybio stock
You need an online brokerage account in order to access the NASDAQ market and buy RLYB stock.
A brokerage account is an investment account that allows you to buy and sell a variety of financial instruments, including stocks, bonds, mutual funds, and ETFs.
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Step 2: Create a brokerage account
Now that you've selected the right brokerage, it's time to fill out some personal information so you can invest in RLYB today.
eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.
Step 4: Evaluate Rallybio stock
After you have figured out the best place to buy Rallybio stock, it's very important to evaluate their stock prior to buying, so you can wrap your head around the risk as well as the upside.
Rallybio shares data
RLYB Price
$17.19
1w %
1.87%
1y %
258.57%
5y %
-80.16%
P/E
2.14x
P/B
0.97x
P/S
152.12x
PEG
N/A
Revenue
$646.00k
Earnings
$45.55M
Fore. Rev. Growth
-100%
Fore. Earn. Growth
N/A
Market Cap
$91.29M
Next Earnings
Nov 5, 2026
Next Dividend
N/A
Rallybio Due Diligence Score
WallStreetZen was built to help everyday investors perform more accurate fundamental analysis in less time.
Last year, RLYB revenue was $646.00k. In the past two year, RLYB's revenue has grown by 46.99% per year. This was faster than the Biotechnology industry average of 24.78%.
No, Rallybio doesn't provide an income stream by paying out dividends.
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Step 5: Place your RLYB purchase
You have two main order types:
Market order: A market order is an order to buy or sell a stock at the best possible price. Market orders are generally fine for most investors.
Limit order: A limit order enables you to buy or sell a stock at a specific price (or better). If you want to ensure you're buying or selling at a particular price limit, use a limit order.
Hit the Open button and eToro will place your order.
If you require more info about investing in stocks on eToro, click the how to video below:
As of Sep 18, 2026, it costs $17.19 to buy one share of Rallybio stock.
Remember, eToro's fractional share buying allows you to buy partial shares of stocks and ETFs. Even if you only have $8, you can buy 0.465 shares of RLYB.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.
Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.