WallStSmart

Castle Biosciences Inc (CSTL)vsThermo Fisher Scientific Inc (TMO)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Thermo Fisher Scientific Inc generates 13030% more annual revenue ($45.20B vs $344.23M). TMO leads profitability with a 15.1% profit margin vs -7.0%. TMO earns a higher WallStSmart Score of 62/100 (C+).

CSTL

Avoid

33

out of 100

Grade: F

Growth: 5.3Profit: 2.0Value: 6.7Quality: 8.5
Piotroski: 2/9Altman Z: 4.27

TMO

Buy

62

out of 100

Grade: C+

Growth: 4.7Profit: 7.0Value: 4.7Quality: 5.3
Piotroski: 3/9
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

CSTLUndervalued (+65.9%)

Margin of Safety

+65.9%

Fair Value

$94.72

Current Price

$19.83

$74.89 discount

UndervaluedFair: $94.72Overvalued
TMOOvervalued (-13.7%)

Margin of Safety

-13.7%

Fair Value

$408.97

Current Price

$465.00

$56.03 premium

UndervaluedFair: $408.97Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

CSTL3 strengths · Avg: 10.0/10
Price/BookValuation
1.3x10/10

Reasonable price relative to book value

Debt/EquityHealth
0.0810/10

Conservative balance sheet, low leverage

Altman Z-ScoreHealth
4.2710/10

Safe zone — low bankruptcy risk

TMO1 strengths · Avg: 9.0/10
Market CapQuality
$176.32B9/10

Large-cap with strong market position

Areas to Watch

CSTL4 concerns · Avg: 3.0/10
Revenue GrowthGrowth
0.8%4/10

0.8% revenue growth

Market CapQuality
$583.55M3/10

Smaller company, higher risk/reward

Piotroski F-ScoreQuality
2/93/10

Weak financial health signals

Return on EquityProfitability
-5.2%2/10

ROE of -5.2% — below average capital efficiency

TMO3 concerns · Avg: 3.7/10
PEG RatioValuation
1.564/10

Expensive relative to growth rate

P/E RatioValuation
26.1x4/10

Moderate valuation

Piotroski F-ScoreQuality
3/93/10

Weak financial health signals

Comparative Analysis Report

WallStSmart Research

Bull Case : CSTL

The strongest argument for CSTL centers on Price/Book, Debt/Equity, Altman Z-Score.

Bull Case : TMO

The strongest argument for TMO centers on Market Cap. Profitability is solid with margins at 15.1% and operating margin at 17.9%.

Bear Case : CSTL

The primary concerns for CSTL are Revenue Growth, Market Cap, Piotroski F-Score.

Bear Case : TMO

The primary concerns for TMO are PEG Ratio, P/E Ratio, Piotroski F-Score.

Key Dynamics to Monitor

CSTL profiles as a turnaround stock while TMO is a mature play — different risk/reward profiles.

CSTL carries more volatility with a beta of 1.11 — expect wider price swings.

TMO is growing revenue faster at 6.2% — sustainability is the question.

TMO generates stronger free cash flow (816M), providing more financial flexibility.

Bottom Line

TMO scores higher overall (62/100 vs 33/100), backed by strong 15.1% margins. CSTL offers better value entry with a 65.9% margin of safety. Both earn "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.

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Thermo Fisher Scientific Inc

HEALTHCARE · DIAGNOSTICS & RESEARCH · USA

Thermo Fisher Scientific is an American provisioner of scientific instrumentation, reagents and consumables, and software and services to healthcare, life science, and other laboratories in academia, government, and industry (including in the biotechnology and pharmaceutical sectors). Based in Waltham, Massachusetts, Thermo Fisher was created in 2006 by the merger of Thermo Electron and Fisher Scientific, to form a company with US$ 9 billion in combined revenues.

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