Castle Biosciences Inc (CSTL)vsIDEXX Laboratories Inc (IDXX)
CSTL
Castle Biosciences Inc
$32.03
+5.12%
HEALTHCARE · Cap: $928.40M
IDXX
IDEXX Laboratories Inc
$586.67
-0.56%
HEALTHCARE · Cap: $44.10B
Smart Verdict
WallStSmart Research — data-driven comparison
IDEXX Laboratories Inc generates 1144% more annual revenue ($4.45B vs $357.28M). IDXX leads profitability with a 24.6% profit margin vs -5.4%. IDXX earns a higher WallStSmart Score of 63/100 (C+).
CSTL
Hold37
out of 100
Grade: F
IDXX
Buy63
out of 100
Grade: C+
Intrinsic Value Comparison
Multi-model valuation · Graham Formula
Margin of Safety
+59.2%
Fair Value
$79.18
Current Price
$32.03
$47.15 discount
Margin of Safety
-52.7%
Fair Value
$424.86
Current Price
$586.67
$161.81 premium
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Conservative balance sheet, low leverage
Safe zone — low bankruptcy risk
Reasonable price relative to book value
Revenue surging 20.1% year-over-year
Every $100 of equity generates 70 in profit
Strong operational efficiency at 31.8%
Safe zone — low bankruptcy risk
Keeps 25 of every $100 in revenue as profit
Areas to Watch
Smaller company, higher risk/reward
Weak financial health signals
ROE of -2.8% — below average capital efficiency
Earnings declined 51.6%
Expensive relative to growth rate
Premium valuation, high expectations priced in
Trading at 29.9x book value
Comparative Analysis Report
WallStSmart ResearchBull Case : CSTL
The strongest argument for CSTL centers on Debt/Equity, Altman Z-Score, Price/Book. Revenue growth of 20.1% demonstrates continued momentum.
Bull Case : IDXX
The strongest argument for IDXX centers on Return on Equity, Operating Margin, Altman Z-Score. Profitability is solid with margins at 24.6% and operating margin at 31.8%. Revenue growth of 14.3% demonstrates continued momentum.
Bear Case : CSTL
The primary concerns for CSTL are Market Cap, Piotroski F-Score, Return on Equity.
Bear Case : IDXX
The primary concerns for IDXX are PEG Ratio, P/E Ratio, Price/Book. A P/E of 41.1x leaves little room for execution misses.
Key Dynamics to Monitor
CSTL profiles as a growth stock while IDXX is a mature play — different risk/reward profiles.
IDXX carries more volatility with a beta of 1.55 — expect wider price swings.
CSTL is growing revenue faster at 20.1% — sustainability is the question.
IDXX generates stronger free cash flow (234M), providing more financial flexibility.
Bottom Line
IDXX scores higher overall (63/100 vs 37/100), backed by strong 24.6% margins and 14.3% revenue growth. CSTL offers better value entry with a 59.2% margin of safety. Both earn "Buy" and "Hold" ratings respectively — the choice depends on your investment horizon and risk tolerance.
This analysis is generated from publicly available financial data. Not financial advice.
Castle Biosciences Inc
HEALTHCARE · DIAGNOSTICS & RESEARCH · USA
Castle Biosciences Inc. is a pioneering diagnostics firm that enhances patient care through advanced gene-expression profiling tests, particularly within the skin cancer sector, exemplified by its flagship product, DecisionDx®-Melanoma. This innovative test offers essential insights for risk stratification, enabling oncologists to make informed treatment decisions in managing melanoma. With a strong focus on precision medicine, coupled with an extensive research and development strategy, Castle Biosciences is poised for growth as it seeks to expand its offerings and meet critical clinical demands. By addressing the complexities inherent in oncology, the company not only aims to improve patient outcomes but also to generate substantial value for its investors.
Visit Website →IDEXX Laboratories Inc
HEALTHCARE · DIAGNOSTICS & RESEARCH · USA
IDEXX Laboratories, Inc. is an American multinational corporation engaged in the development, manufacture, and distribution of products and services for the companion animal veterinary, livestock and poultry, water testing, and dairy markets.
Compare with Other DIAGNOSTICS & RESEARCH Stocks
Want to dig deeper into these stocks?