CSTL
Castle Biosciences
$36.68
+$2.17 (+6.29%)Oct 28, 2026
Key metrics
The numbers that frame CSTL today
- Market cap
- $1.12B
- Gross margin
- 77.3%
- EV / Sales
- 3.1
- ROIC
- -5.2%
- Div yield
- 0%
- Debt / equity
- 0.1
- 52wk Low
- $17.72
- 52wk High
- $44.28
Growth
Revenue and earnings trend for CSTL
RevenueNet income
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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?
Yes. Castle Biosciences has mixed quality and excellent momentum. Taken together, the setup leans positive. Growth looks strong, which supports the long-term business case. We think Castle Biosciences is selling at a high price, which cuts against the buy case.
What is the market capitalization of CSTL?
Castle Biosciences's market capitalization is $1.12B.
What is the 52-week high for CSTL stock?
The 52-week high for Castle Biosciences is $44.28. The current close of $36.68 is 17.2% below that high.
What is the 52-week low for CSTL stock?
The 52-week low for Castle Biosciences is $17.72. The current close of $36.68 is 107% 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.