Castle Biosciences Inc (CSTL)vsEli Lilly and Company (LLY)
CSTL
Castle Biosciences Inc
$19.83
+3.07%
HEALTHCARE · Cap: $583.55M
LLY
Eli Lilly and Company
$948.45
-2.72%
HEALTHCARE · Cap: $869.41B
Smart Verdict
WallStSmart Research — data-driven comparison
Eli Lilly and Company generates 20889% more annual revenue ($72.25B vs $344.23M). LLY leads profitability with a 35.0% profit margin vs -7.0%. LLY earns a higher WallStSmart Score of 78/100 (B+).
CSTL
Avoid33
out of 100
Grade: F
LLY
Strong Buy78
out of 100
Grade: B+
Intrinsic Value Comparison
Multi-model valuation · Graham Formula
Margin of Safety
+65.9%
Fair Value
$94.72
Current Price
$19.83
$74.89 discount
Intrinsic value data unavailable for LLY.
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Reasonable price relative to book value
Conservative balance sheet, low leverage
Safe zone — low bankruptcy risk
Mega-cap, among the largest globally
Every $100 of equity generates 108 in profit
Keeps 35 of every $100 in revenue as profit
Strong operational efficiency at 49.4%
Revenue surging 55.5% year-over-year
Earnings expanding 169.9% YoY
Areas to Watch
0.8% revenue growth
Smaller company, higher risk/reward
Weak financial health signals
ROE of -5.2% — below average capital efficiency
Premium valuation, high expectations priced in
Elevated debt levels
Trading at 27.2x book value
Comparative Analysis Report
WallStSmart ResearchBull Case : CSTL
The strongest argument for CSTL centers on Price/Book, Debt/Equity, Altman Z-Score.
Bull Case : LLY
The strongest argument for LLY centers on Market Cap, Return on Equity, Profit Margin. Profitability is solid with margins at 35.0% and operating margin at 49.4%. Revenue growth of 55.5% demonstrates continued momentum.
Bear Case : CSTL
The primary concerns for CSTL are Revenue Growth, Market Cap, Piotroski F-Score.
Bear Case : LLY
The primary concerns for LLY are P/E Ratio, Debt/Equity, Price/Book. Debt-to-equity of 1.60 is elevated, increasing financial risk.
Key Dynamics to Monitor
CSTL profiles as a turnaround stock while LLY is a growth play — different risk/reward profiles.
CSTL carries more volatility with a beta of 1.11 — expect wider price swings.
LLY is growing revenue faster at 55.5% — sustainability is the question.
LLY generates stronger free cash flow (3.0B), providing more financial flexibility.
Bottom Line
LLY scores higher overall (78/100 vs 33/100), backed by strong 35.0% margins and 55.5% revenue growth. CSTL offers better value entry with a 65.9% margin of safety. Both earn "Strong Buy" and "Avoid" 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 cutting-edge diagnostics company dedicated to transforming patient care through its innovative gene-expression profiling tests, particularly in the realm of skin cancer. Its flagship product, DecisionDx®-Melanoma, is instrumental in the management of melanoma, providing critical insights into patient risk stratification and treatment decision-making. With a robust commitment to precision medicine, Castle is actively expanding its portfolio of assays to address unmet clinical needs. Bolstered by a strong research and development focus and an ambitious pipeline, the company is strategically positioned for sustainable growth while enhancing clinical outcomes and delivering significant value to its shareholders in the evolving oncology marketplace.
Visit Website →Eli Lilly and Company
HEALTHCARE · DRUG MANUFACTURERS - GENERAL · USA
Eli Lilly and Company is an American pharmaceutical company headquartered in Indianapolis, Indiana, with offices in 18 countries. Its products are sold in approximately 125 countries.
Visit Website →Compare with Other DIAGNOSTICS & RESEARCH Stocks
Want to dig deeper into these stocks?