WallStSmart

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

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Thermo Fisher Scientific Inc generates 13196% more annual revenue ($45.20B vs $339.92M). TMO leads profitability with a 15.1% profit margin vs -3.8%. TMO earns a higher WallStSmart Score of 62/100 (C+).

CSTL

Avoid

31

out of 100

Grade: F

Growth: 4.7Profit: 2.0Value: 6.7Quality: 8.5
Piotroski: 3/9Altman Z: 3.11

TMO

Buy

62

out of 100

Grade: C+

Growth: 4.7Profit: 7.0Value: 4.0Quality: 6.0
Piotroski: 3/9Altman Z: 2.13
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

CSTLUndervalued (+58.2%)

Margin of Safety

+58.2%

Fair Value

$77.42

Current Price

$21.38

$56.04 discount

UndervaluedFair: $77.42Overvalued
TMOSignificantly Overvalued (-40.1%)

Margin of Safety

-40.1%

Fair Value

$331.71

Current Price

$492.20

$160.49 premium

UndervaluedFair: $331.71Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

CSTL3 strengths · Avg: 10.0/10
Price/BookValuation
1.4x10/10

Reasonable price relative to book value

Debt/EquityHealth
0.0810/10

Conservative balance sheet, low leverage

Altman Z-ScoreHealth
3.1110/10

Safe zone — low bankruptcy risk

TMO1 strengths · Avg: 9.0/10
Market CapQuality
$176.04B9/10

Large-cap with strong market position

Areas to Watch

CSTL4 concerns · Avg: 2.5/10
Market CapQuality
$627.83M3/10

Smaller company, higher risk/reward

Piotroski F-ScoreQuality
3/93/10

Weak financial health signals

Return on EquityProfitability
-2.8%2/10

ROE of -2.8% — below average capital efficiency

Revenue GrowthGrowth
-4.9%2/10

Revenue declined 4.9%

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

Expensive relative to growth rate

P/E RatioValuation
26.0x4/10

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 Market Cap, Piotroski F-Score, Return on Equity.

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 1.02 — 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 31/100), backed by strong 15.1% margins. CSTL offers better value entry with a 58.2% 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 leading diagnostics company dedicated to improving patient care through cutting-edge gene-expression profiling tests, specifically in the realm of skin cancer, with its flagship product, DecisionDx®-Melanoma. This innovative solution provides crucial insights into patient risk stratification, thus facilitating informed treatment decisions in melanoma management. With a steadfast commitment to precision medicine and a robust research and development framework, Castle Biosciences is strategically positioned to expand its portfolio and address pivotal clinical needs. By focusing on the complexities of oncology, the company aims to enhance clinical outcomes while driving significant value for shareholders.

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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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