
CASTLE BIOSCIENCES INC
CSTLNASDAQTrading Snapshot
- Day Range
- $32.07 โ $32.43
- 52-Week Range
- $17.72 โ $44.28
- Volume
- $2.42B
- Avg Volume
- $1.72B
- Shares Outstanding
- 30.5M
- Next Earnings
- Sep 2, 2026
Fundamentals Snapshot
- Annual Revenue
- $344M
- Last Q Revenue
- $104M
- P/E Ratio
- -48.9
- P/S Ratio
- 2.8x
- EPS (TTM)
- $-0.64
- Dividend Yield
- 0.00%
Why Investors Own CSTL
- โHigh-growth profile โ revenue up +38.3% YoY with expanding US Equity exposure.
- โHealthy economics โ 58% gross margin and 17% free-cash-flow margin.
- โNew products and segments could unlock additional revenue streams.
Execution delays, intensifying competition, and valuation compression if growth decelerates.
Financial Trends
About CASTLE BIOSCIENCES INC
Castle Biosciences, Inc. functions as a commercial-stage diagnostics firm, with its primary objective being the provision of both diagnostic and prognostic testing services, specifically targeting various dermatological cancers. Their flagship product, DecisionDx-Melanoma, represents an advanced multi-gene expression profile (GEP) assay engineered to assess the probability of metastasis in patients afflicted with invasive cutaneous melanoma. In addition to their leading solution, the company has created several other specialized, proprietary tests. Among these is DecisionDx-UM, a GEP test tailored to forecast the risk of metastasis for individuals with uveal melanoma, a less common malignancy of the eye. Another key offering is DecisionDx-SCC, a distinctive 40-gene expression profile test that utilizes a patient's unique tumor biology to predict their specific risk of squamous cell carcinoma metastasis, particularly for those presenting with recognized risk factors. Moreover, they offer DecisionDx DiffDx-Melanoma and myPath Melanoma, both proprietary GEP tests employed to assist in the accurate diagnosis of ambiguous pigmented lesions. These specialized testing services are provided by Castle Biosciences to patients predominantly through their healthcare providers. The organization commenced operations in 2007 and maintains its corporate headquarters in Friendswood, Texas.
Otter Score Breakdown
โAnalyst Ratings
โLatest News & Updates
BTIG Maintains Buy on Castle Biosciences, Raises Price Target to $44
BTIG analyst Mark Massaro maintains Castle Biosciences (NASDAQ:CSTL) with a Buy and raises the price target from $40 to $44.

Castle Biosciences, Inc. (CSTL) Q2 2026 Earnings Call Transcript
Castle Biosciences, Inc. (CSTL) Q2 2026 Earnings Call July 30, 2026 4:30 PM EDTCompany ParticipantsCamilla Zuckero - Vice President of Investor Relations...

Castle Biosciences, Inc. 2026 Q2 - Results - Earnings Call Presentation
2026-07-31. The following slide deck was published by Castle Biosciences, Inc.
Castle Biosciences (NASDAQ:CSTL) Surges After Smashing Q2 Estimates and Raising Guidance
Castle Biosciences Q2 revenue of $103.5M beat estimates, raised 2026 guidance, stock surged 7.6% after hours.

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Castle Biosciences Raises FY2026 Sales Guidance from $345.000M-$355.000M to $365.000M-$375.000M vs $352.291M Est
Castle Biosciences (NASDAQ:CSTL) raises FY2026 sales outlook from $345.000 million-$355.000 million to $365.000 million-$375.000 million vs $352.291 million estimate.