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Castle Biosciences Inc (CSTL)

Upturn stock ratingUpturn stock rating
$19.82
Last Close (24-hour delay)
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PASS
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Upturn Stock infoUpturn Stock info Stock price based on last close
*as per simulation
(see disclosures)
Time period over
  • ALL
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Upturn Advisory Summary

08/14/2025: CSTL (1-star) is currently NOT-A-BUY. Pass it for now.

Upturn Star Rating

rating

Not Recommended Performance

These Stocks/ETFs, based on Upturn Advisory, consistently fall short of market performance, signaling caution before investing.

Number of Analysts

rating

9 Analysts rated it

Limited analyst coverage, niche firm, research info may be scarce.

1 Year Target Price $35.62

1 Year Target Price $35.62

Analysts Price Target For last 52 week
$35.62 Target price
52w Low $14.59
Current$19.82
52w High $35.84

Analysis of Past Performance

Type Stock
Historic Profit -75.4%
Avg. Invested days 25
Today’s Advisory PASS
Upturn Star Rating Upturn stock ratingUpturn stock rating
Upturn Advisory Performance Upturn Advisory Performance 2.0
Stock Returns Performance Upturn Returns Performance 1.0
Upturn Profits based on simulationUpturn Profits based on simulation Profits based on simulation
Upturn Profits based on simulationUpturn Profits based on simulation Last Close 08/14/2025

Key Highlights

Company Size Small-Cap Stock
Market Capitalization 574.94M USD
Price to earnings Ratio -
1Y Target Price 35.62
Price to earnings Ratio -
1Y Target Price 35.62
Volume (30-day avg) 9
Beta 1.09
52 Weeks Range 14.59 - 35.84
Updated Date 08/15/2025
52 Weeks Range 14.59 - 35.84
Updated Date 08/15/2025
Dividends yield (FY) -
Basic EPS (TTM) -0.34

Analyzing Revenue: Products, Geography and Growth

Revenue by Products

Product revenue - Year on Year

Earnings Date

Report Date 2025-08-04
When -
Estimate -0.51
Actual 0.15

Profitability

Profit Margin -2.73%
Operating Margin (TTM) -4.93%

Management Effectiveness

Return on Assets (TTM) -2.79%
Return on Equity (TTM) -2.15%

Valuation

Trailing PE -
Forward PE -
Enterprise Value 336366129
Price to Sales(TTM) 1.66
Enterprise Value 336366129
Price to Sales(TTM) 1.66
Enterprise Value to Revenue 0.97
Enterprise Value to EBITDA 10.33
Shares Outstanding 29008300
Shares Floating 26622930
Shares Outstanding 29008300
Shares Floating 26622930
Percent Insiders 3.16
Percent Institutions 94.26

ai summary icon Upturn AI SWOT

Castle Biosciences Inc

stock logo

Company Overview

overview logo History and Background

Castle Biosciences Inc. was founded in 2005 and is a dermatologic cancer company focused on providing personalized genomic information to improve cancer treatment decisions. They have grown through internal development and strategic acquisitions, expanding their test offerings to address various skin cancer types.

business area logo Core Business Areas

  • Dermatology: Offers tests like DecisionDx-Melanoma, DecisionDx-SCC, and DecisionDx-DiffDx-Melanoma to provide prognostic and diagnostic information for skin cancers.
  • Other: Includes tests for uveal melanoma (DecisionDx-UM) and Barrett's Esophagus (TissueCypher Barrett's Esophagus Assay).

leadership logo Leadership and Structure

The leadership team is headed by Derek Maetzold (President & CEO). The organizational structure includes departments focused on research and development, commercial operations, medical affairs, and finance.

Top Products and Market Share

overview logo Key Offerings

  • DecisionDx-Melanoma: A gene expression profile (GEP) test that predicts the risk of metastasis in cutaneous melanoma. Competitors include Myriad Genetics (although they have exited the dermatology market) and other emerging genomic testing companies. Market share is estimated to be significant within the cutaneous melanoma prognostic testing market; estimated at 60%.
  • DecisionDx-SCC: A GEP test that predicts the risk of metastasis in cutaneous squamous cell carcinoma (SCC). Competitors include other molecular diagnostic companies exploring similar tests, but currently, DecisionDx-SCC is a leading assay. Market share is difficult to assess precisely due to the evolving competitive landscape but is considered substantial for high-risk SCC.
  • DecisionDx-UM: A GEP test for uveal melanoma that predicts risk of metastasis. It's considered a standard of care. Competitors are limited due to the specialized nature of uveal melanoma testing. Market share is estimated to be above 80% within the US market for this testing modality.

Market Dynamics

industry overview logo Industry Overview

The industry comprises molecular diagnostics companies specializing in genomic testing for cancer. Personalized medicine and precision oncology are driving growth. Increasing awareness of genomic testing benefits and advancements in technology fuel market expansion.

Positioning

Castle Biosciences is a leading provider of prognostic and diagnostic genomic tests for dermatologic cancers and other oncology areas. Their competitive advantages include established tests, strong clinical evidence, and a specialized focus on dermatologic oncology.

Total Addressable Market (TAM)

The TAM for Castle Biosciences is estimated to be in the billions of dollars, considering the prevalence of skin cancers and the expansion into new indications. Castle Biosciences is well-positioned to capture a significant portion of this TAM through its existing tests and future product development.

Upturn SWOT Analysis

Strengths

  • Proprietary gene expression profiling technology
  • Strong clinical validation data
  • Established reimbursement pathways
  • Focus on underserved markets in dermatologic oncology
  • Experienced management team

Weaknesses

  • Reliance on a limited number of tests
  • Susceptibility to changes in reimbursement policies
  • Dependence on physician adoption of genomic testing
  • Negative gross margins for DecisionDx DiffDx-Melanoma
  • Need to continue to innovate and acquire new technologies

Opportunities

  • Expanding test offerings into new cancer types
  • Increasing market penetration through education and awareness
  • Forging partnerships with pharmaceutical companies
  • Developing new diagnostic and prognostic tools
  • International expansion

Threats

  • Competition from other molecular diagnostic companies
  • Changes in reimbursement policies
  • Technological advancements rendering existing tests obsolete
  • Economic downturn impacting healthcare spending
  • Regulatory hurdles for new tests

Competitors and Market Share

competitor logo Key Competitors

  • MIRM
  • NSTG

Competitive Landscape

Castle Biosciences holds a strong position in the dermatologic cancer genomic testing market. MIRM and NSTG are significant players in similar areas like cancer diagnostics, offering some overlapping and competing products. The space is complex and changing and marketshare can change based on acquisitions

Major Acquisitions

AltheaDx

  • Year: 2021
  • Acquisition Price (USD millions): 145
  • Strategic Rationale: Expanded Castle Biosciences' portfolio into gastroenterology with the TissueCypher Barrett's Esophagus Assay.

MyPath Labs

  • Year: 2022
  • Acquisition Price (USD millions): 32.5
  • Strategic Rationale: Added complementary tests and expertise in dermatopathology.

Growth Trajectory and Initiatives

Historical Growth: Castle Biosciences has demonstrated strong revenue growth driven by increasing adoption of its genomic tests.

Future Projections: Analyst estimates vary, but project continued revenue growth driven by market expansion and new test development.

Recent Initiatives: Recent initiatives include acquisitions of companies like AltheaDx and MyPath Labs, expanding the test menu and market reach. Expansion of the sales force and increased marketing efforts are also key initiatives.

Summary

Castle Biosciences is a specialized genomic testing company with a focus on dermatology, showing promising growth in revenue, partially offset by significant losses. Its strong suit is its focus on underserved markets in dermatologic oncology where they have established tests with strong data and reimbursement. Competitors and future potential for reimbursement policy changes are important to monitor, along with technological advancements that can make their existing tests obsolete.

Peer Comparison

Sources and Disclaimers

Data Sources:

  • Company SEC Filings (10-K, 10-Q)
  • Company Website
  • Investor Presentations
  • Analyst Reports

Disclaimers:

This analysis is based on publicly available information and is not financial advice. Market share estimates are approximate and may vary. Financial data is not real-time and may be outdated.

Upturn AI SummarizationUpturn AI Summarization AI Summarization is directionally correct and might not be accurate.

Upturn AI SummarizationUpturn AI Summarization Summarized information shown could be a few years old and not current.

Upturn AI SummarizationUpturn AI Summarization Fundamental Rating based on AI could be based on old data.

Upturn AI SummarizationUpturn AI Summarization AI-generated summaries may have inaccuracies (hallucinations). Please verify the information before taking action.

About Castle Biosciences Inc

Exchange NASDAQ
Headquaters Friendswood, TX, United States
IPO Launch date 2019-07-25
Founder, CEO, President & Director Mr. Derek J. Maetzold
Sector Healthcare
Industry Diagnostics & Research
Full time employees 798
Full time employees 798

Castle Biosciences, Inc., a molecular diagnostics company, provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), uveal melanoma, and mental health conditions. The company offers DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test that predicts the risk of metastasis for patients with uveal melanoma; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a risk stratification spatial-omics test to predict future development of progression of high-grade dysplasia and/or esophageal cancer in patients with non-dysplastic, indefinite dysplasia, and low-grade dysplasia BE. It also provides DecisionDx-UM, a risk stratification GEP test that predicts the risk of metastasis for patients with uveal melanoma; and IDgenetix, a pharmacogenomic test that helps guide optimal drug treatment for patients diagnosed with major depressive disorder, schizophrenia, bipolar disorder, anxiety disorders, social phobia, obsessive-compulsive personality disorder, post-traumatic stress disorder, and attention deficit hyperactivity disorder. The company offers its products to skin cancer and gastroenterology markets. The company was incorporated in 2007 and is headquartered in Friendswood, Texas.