CSTL
Castle Biosciences
$24.44
−$0.24 (−0.99%)Jul 27, 2026
Key metrics
The numbers that frame CSTL today
- Market cap
- $741.26M
- P/E (TTM)
- -57.8
- EV / FCF
- 156.6
- Gross margin
- 77.9%
- EV / Sales
- 2.1
- ROIC
- -5%
- Div yield
- 0%
- Debt / equity
- 0.1
- 52wk Low
- $14.59
- 52wk High
- $44.28
Growth
Revenue and earnings trend for CSTL
RevenueNet income
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Revenue and earnings trends, margins and the multi-year trajectory - free with an account.
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Already a member? Log inCash flow & returns
Free cash flow and financial health
Free cash flowNet debt
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Free cash flow detail, returns on capital and the balance-sheet trend - free with an account.
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Recent insider buying and selling activity
PurchasesSales
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Already a member? Log inFrequently asked questions
Plain-English answers about CSTL
Is Castle Biosciences a good buy?
Hold. Castle Biosciences has mixed quality and weak momentum. The setup is mixed. Growth looks excellent, which supports the long-term business case. We think Castle Biosciences is selling at a high price.
What is the market capitalization of CSTL?
Castle Biosciences's market capitalization is $741.26M.
What is the P/E ratio for CSTL stock?
Castle Biosciences's current P/E ratio is -57.8.
What is the 52-week high for CSTL stock?
The 52-week high for Castle Biosciences is $44.28. The current close of $24.44 is 44.8% below that high.
What is the 52-week low for CSTL stock?
The 52-week low for Castle Biosciences is $14.59. The current close of $24.44 is 67.5% above that low.
Does CSTL stock pay dividends?
Castle Biosciences does not currently show a dividend per share in the company data.
What is the Debt / Equity ratio for CSTL?
Castle Biosciences's Debt / Equity ratio is 0.08.