How to Buy Castle Biosciences Stock
Castle Biosciences Inc
Castle Biosciences, Inc. , a commercial-stage diagnostics company, focuses to provide diagnostic and prognostic testing services for dermatological cancers.
Castle Biosciences stock last closed at $19.85, down 1.19% from the previous day, and has decreased 7.8% in one year. It has overperformed other stocks in the Diagnostics & Research industry by 0.18 percentage points. Castle Biosciences stock is currently +17.01% from its 52-week low of $16.97, and -44.61% from its 52-week high of $35.84.
As of Apr 29, 2025, there are 28.51M shares of CSTL outstanding. The market value of CSTL is $566.01M. In the past 24 hours, 322,452 CSTL shares were traded.
How to Buy Castle Biosciences Stock
Wondering how to invest in Castle Biosciences stock? Here's how.
- Decide where to buy Castle Biosciences stock: You need to choose an online brokerage, but don't worry - we've tried dozens of online brokerages and apps to help you determine where to buy Castle Biosciences stock.
- Sign up for your brokerage account: Sign up for 0% fee trading with the highest-rated brokerage we've identified.
- Deposit money your investment account: Pick your method of payment and add your details.
- Evaluate Castle Biosciences stock: The Castle Biosciences ticker symbol is CSTL. Is Castle Biosciences stock a good investment? Should you buy shares of CSTL? How do CSTL's underlying business fundamentals look? Do top analysts think Castle Biosciences is a good buy? Why has CSTL's stock price moved recently? (Hint: Our stock market research website can help you decide if CSTL is a good stock to buy).
- Place your CSTL purchase: Decide if you will purchase CSTL shares at the current market price or use a limit order to purchase CSTL stock at a particular price.
- Monitor your investment in CSTL: Create a watchlist to important notifications about your position in Castle Biosciences stock.
Step 1: Decide where to buy Castle Biosciences stock
You need a brokerage account in order to access the NASDAQ market and buy CSTL stock.
Our preferred brokerage: eToro
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Get $10 towards your share purchase by creating an account with eToro now. This offer is only for US users.
Open eToro AccountStep 2: Sign up for your brokerage account
Now that you've picked the right brokerage, you'll need to fill out some personal details so you can buy CSTL today.
How to Start a New Account on eToro
- Click here to get started.eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.
- Input your personal details to create your new brokerage account.
- Send your info by hitting the "Create Account" button. Get started with eToro today
Step 3: Deposit money your investment account
Now that you've created your account on one of the most highly reviewed stock trading apps, you need to deposit funds:
Watch the tutorial below if you need help depositing money into your new brokerage account.
Step 4: Evaluate Castle Biosciences stock
Once you have figured out the best place to buy Castle Biosciences stock, it's absolutely critical to analyze their stock prior to buying, so you can understand the risk as well as the opportunity.
Castle Biosciences Metrics
Fundamentals of Castle Biosciences
WallStreetZen was built to help part-time investors perform more accurate fundamental analysis quickly.
You can see all of the due diligence checks on CSTL's stock page.
How is CSTL stock valued?
Investors use many financial metrics, analyses, models, and charts to gauge CSTL's true value.
Using relative valuations measures:
- CSTL may be undervalued based on its P/E ratio of 30.08x, relative to Diagnostics & Research industry P/E ratio of 38.53x
- CSTL may be undervalued based on its P/B ratio of 1.24x, relative to Diagnostics & Research industry P/B ratio of 3.38x
- CSTL may be overvalued based on its PEG ratio of 3.05x
You can access additional valuation research on CSTL's stock here.
How do CSTL Financials look?
Positive Health Checks:
- There are more short-term assets than short-term liabilities on the CSTL balance sheet.
- CSTL has a low debt to equity ratio of 0.17.
- CSTL earnings of $22.14M is not enough to cover its interest payments.
- There are more short-term assets than long-term liabilities on the CSTL balance sheet.
- CSTL's operating cash flow of $64.87M allows it to safely service it's debt of $26.34M.
- Total CSTL debt is lower than 5 years ago, relative to shareholder equity.
- CSTL profit margin has gone up from -26.1% to 5.5% in the past year.
Is Castle Biosciences stock a Buy, Hold, or Sell, according to analysts?
Out of 5 sell side analysts who monitor CSTL, the consensus analyst rating on CSTL is a Strong Buy
It's important to keep in mind that analyst ratings are not recommendations, nor are they financial advice.
You can dive deeper into what analysts are projecting on the Castle Biosciences stock forecast page.
CSTL Technical Indicators
CSTL Growth Metrics
Last year, CSTL earnings were $18.25M. In the past 5 year, CSTL's earnings have grown by 13.53% per year. This was faster than the Diagnostics & Research industry average of 8.64%.
Last year, CSTL revenue was $332.07M. During the last 5 year, CSTL's revenue has grown by 44.97% per year. This was faster than the Diagnostics & Research industry average of 9.9%.
You can analyze CSTL's earnings and revenue performance here.
Latest Insiders Trades at CSTL
Over the past year, insiders at CSTL have sold more shares than they have bought.
Derek J. Maetzold, Pres. Chief Exec. Officer of CSTL, was the latest CSTL insider to sell. They sold $26,596.25 worth of CSTL stock on Apr 21, 2025.
Research more about who owns CSTL shares here.
Does CSTL stock generate passive income?
No, Castle Biosciences doesn't provide an income stream by paying out dividends.
CSTL Social Trading Data
One of the reasons eToro is our favorite brokerage is because of its social trading community.
Click below to find out what other community members have to say.
Step 5: Place your CSTL purchase
You have two primary types of orders:
- Market order: A market order is an order to buy or sell a stock at the best price on the market.
Market orders are usually sufficient. - Limit order: A limit order lets you buy or sell a stock at a specific price (or better).
If you want to ensure you're buying or selling at a specific price, place a limit order.
Click the Open Trade button and your broker will place your order.
If you want more help with buying stocks on eToro, watch the how to video below:
Step 6: Monitor your investment in CSTL
Now that you own some shares in CSTL, you'll want to stay up-to-date on your new investment.
Put CSTL on a watchlist to keep track of your CSTL stock.
CSTL Feed
How to Buy Stock in Castle Biosciences
To reiterate, here are the 6 steps to buy stock in Castle Biosciences:
- Decide where to buy Castle Biosciences stock
- Sign up for your brokerage account
- Deposit money your investment account
- Evaluate Castle Biosciences stock
- Place your CSTL purchase
- Monitor your investment in CSTL
If you require a brokerage, eToro is our recommended option.
Get Started with eToro TodayIf you would like to monitor your new investment in Castle Biosciences, get started below.
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