Gossamer Bio, Inc. , a clinical-stage biopharmaceutical company, focuses on discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology in the United States.
Gossamer Bio stock last closed at $3.18, down 8.09% from the previous day, and has increased 249.45% in one year. It has overperformed other stocks in the Biotechnology industry by 2.99 percentage points. Gossamer Bio stock is currently +380.36% from its 52-week low of $0.66, and -11.67% from its 52-week high of $3.60.
At the moment, there are 227.38M shares of GOSS outstanding. The market cap of GOSS is $723.07M. In the past 24 hours, 4.14M GOSS shares were traded.
How to Buy Gossamer Bio Stock
Not sure how to invest in Gossamer Bio stock? Here's how.
Figure out where to buy Gossamer Bio stock: You need to pick a stock brokerage, but don't worry - we've sifted through dozens of online stock brokerages and apps to help you figure out where to buy Gossamer Bio stock.
Sign up for a brokerage account: Sign up for 0% commission trading with the highest-rated brokerage we've selected.
Fund your investment account: Select your payment method and add your info.
Evaluate Gossamer Bio stock: The Gossamer Bio ticker symbol is GOSS. Is Gossamer Bio stock a good investment? Should you buy shares of GOSS? How do GOSS's underlying business fundamentals look? Do top analysts think Gossamer Bio is a good buy? Why has GOSS's stock price moved recently? (Hint: Our stock market research website can help you evaluate if GOSS is a good stock to buy).
Make your GOSS buy order: Decide if you will purchase GOSS shares at the current market price or use a limit order to purchase GOSS shares at a particular price.
Keep tabs on your investment in GOSS: Create a watchlist to keep track of your position in Gossamer Bio stock.
Step 1: Figure out where to buy Gossamer Bio stock
You will need a brokerage account in order to access the NASDAQ market and buy GOSS stock.
A brokerage account allows you to buy and sell a variety of investments, such as stocks, bonds, mutual funds, and ETFs.
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Step 2: Sign up for a brokerage account
Now that you've selected the right brokerage, the next step is to fill out some personal info so you are able to buy GOSS stock 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 Gossamer Bio stock
Once you have selected the best place to buy Gossamer Bio stock, it's very important to research their stock before you buy, so you truly understand the risk and upside.
Gossamer Bio shares quick numbers
GOSS Price
$3.18
1w %
19.55%
1y %
249.45%
5y %
-75.56%
P/E
-5.13x
P/B
-15.68x
P/S
17.97x
PEG
N/A
Revenue
$40.24M
Earnings
-$138.74M
Fore. Rev. Growth
28.65%
Fore. Earn. Growth
N/A
Market Cap
$723.07M
Next Earnings
Nov 6, 2025
Next Dividend
N/A
GOSS Due Diligence Checks
WallStreetZen was created to help part-time investors perform more in-depth fundamental analysis in minutes instead of hours.
Last year, GOSS revenue was $40.24M. During the past one years, GOSS's revenue has gone up by -58.02% per year. This was slower than the Biotechnology industry average of 67.8%.
No, Gossamer Bio doesn't provide an income stream by paying out dividends.
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Step 5: Make your GOSS buy order
You have two primary order types:
Market order: A market order is an order to buy or sell a stock at the best available price. Market orders are mostly fine for most investors.
Limit order: A limit order enables you to buy or sell a security at a specific price (or better). If you want to be certain you're buying or selling at a specific dollar amount limit, use a limit order.
Click the Open Trade button and eToro will execute the order.
If you require more help with buying stocks on eToro, watch the helpful video below:
How much does it cost to buy one Gossamer Bio share?
As of Sep 15, 2025, it costs $3.18 to buy one share of Gossamer Bio stock.
Remember, eToro's fractional share buying allows you to buy partial shares of stocks and ETFs. Even if you only have $1, you can buy 0.314 shares of GOSS.
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.