Castle Biosciences

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About CSTL

Castle Biosciences, Inc. is a molecular diagnostics company, which offers innovative test solutions to aid clinicians in the diagnosis and treatment of dermatologic cancers, barrett’s esophagus, uveal melanoma, and in the treatment of mental health conditions. The firm offers DecisionDx-Melanoma, a proprietary multi-gene expression profile (GEP) test that predicts the risk of metastasis and recurrence for patients diagnosed with invasive cutaneous melanoma. 

CEO
Derek J. Maetzold
CEODerek J. Maetzold
Employees
883
Employees883
Headquarters
Friendswood, Texas
HeadquartersFriendswood, Texas
Founded
2007
Founded2007
Employees
883
Employees883

CSTL Key Statistics

Market cap
1.05B
Market cap1.05B
Price-Earnings ratio
-54.97
Price-Earnings ratio-54.97
Dividend yield
—
Dividend yield—
Average volume
431.26K
Average volume431.26K
High today
$35.75
High today$35.75
Low today
$33.65
Low today$33.65
Open price
$35.17
Open price$35.17
Volume
701.79K
Volume701.79K
52 Week high
$44.28
52 Week high$44.28
52 Week low
$17.72
52 Week low$17.72

Stock Snapshot

The current Castle Biosciences(CSTL) stock price is $35.00, with a market capitalization of 1.05B. The stock trades at a price-to-earnings (P/E) ratio of -54.97.

On 2026-11-05, Castle Biosciences(CSTL) stock moved within a range of $33.65 to $35.75. With shares now at $35.00, the stock is trading +4.0% above its intraday low and -2.1% below the session's peak.

Trading volume for Castle Biosciences(CSTL) stock has reached 701.79K, versus its average volume of 431.26K.

The stock's 52-week range extends from a low of $17.72 to a high of $44.28.

The stock's 52-week range extends from a low of $17.72 to a high of $44.28.

Analyst ratings

100%

of 10 ratings
Buy
100%
Hold
0%
Sell
0%

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