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Stock comparison · Signal date 2026-11-06

CSTL vs PSNL: stock comparison and AI forecast

Castle Biosciences Inc (CSTL) and Personalis, Inc. (PSNL) compared on price performance, valuation, profitability and the daily AI forecast. · Alpha · vs market

Share
Nasdaq · Services-Medical Laboratories

CSTL Castle Biosciences Inc

Price
$32.52 +69.0% · 6M
Market Cap
$993M
P/E Ratio
–
Size
small-cap
AI Forecast
Full analysis →
Nasdaq · Services-Medical Laboratories

PSNL Personalis, Inc.

Market Cap
$1.69B
P/E Ratio
–
Size
small-cap
AI Forecast
Full analysis →
Model output

Which one does the AI model favor?

Intratio's model scores both stocks every trading day. Sign in to see their current direction; the exact ratings and forecasts come with a plan or a free follow slot.

CSTL · PSNL

Key facts

  • PSNL is 1.7 times larger than CSTL by market capitalization ($1.69B against $993M).
  • CSTL turns -6.1% of its revenue into net income, against -147.7% for PSNL.
  • PSNL carries 0.37 times debt per unit of equity, against 0.21 times for CSTL.
  • Both companies share the SEC industry classification Services-Medical Laboratories.
Fundamentals

Fundamentals side by side

Trailing twelve months.

Valuation & Market

MetricCSTLPSNL
Market Cap$993M$1.69B
P/B Ratio2.08x7.93x
EPS$-0.94$-0.99
Book Value/Share$15.66$1.99
Revenue/Share$12.34$0.76
FCF/Share$0.13$-1.01

Profitability & Margins

MetricCSTLPSNL
ROE-4.8%-56.1%
ROA-4.0%-40.9%
ROIC-5.5%-52.2%
Gross Margin77.1%10.5%
Operating Margin-7.4%-156.7%
Net Margin-6.1%-147.7%
EBT Margin-7.4%-147.7%
Tax Rate-1.4%-0.0%

Financial Health

MetricCSTLPSNL
Current Ratio5.28x4.53x
Quick Ratio5.12x–
D/E Ratio0.21x0.37x
Financial Leverage1.21x1.37x
Interest Coverage-14.4x-986.6x
Working Capital$289M$174M

Cash Flow

MetricCSTLPSNL
Operating Cash Flow$40M-$98M
Free Cash Flow$4M-$108M
Capital Spending-$36M-$10M
OCF Growth YoY-35.7%–
FCF Growth YoY-84.4%–
FCF/Sales1.1%-133.3%
CapEx/Sales9.5%12.5%

Operational Efficiency

MetricCSTLPSNL
Asset Turnover0.65x0.28x
Receivables Turnover7.2x4.5x
Inventory Turnover8.3x–
Fixed Assets Turnover3.4x1.6x
Days Sales Outstanding50 days82 days
Days Inventory44 days–
Payables Period56 days79 days
Cash Conversion Cycle38 days–

Income Statement

MetricCSTLPSNL
Total Revenue$377M$81M
Operating Income-$28M-$127M
Net Income-$23M-$119M
R&D Expense$58M$60M
SG&A Expense$252M$80M
Cost of Goods Sold$86M$67M

Dividend & Shareholder Information

MetricCSTLPSNL
Shares Outstanding31M107M
EPS Growth-280.8%–
FAQ

CSTL vs PSNL: stock comparison and AI forecast

Which is bigger, CSTL or PSNL?

PSNL is 1.7 times larger than CSTL by market capitalization ($1.69B against $993M).

Which one does Intratio's AI model rank higher, CSTL or PSNL?

Intratio's model scores both stocks every trading day. Sign in to see their current direction; the exact ratings and forecasts come with a plan or a free follow slot.

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This analysis is generated automatically using our proprietary AI systems and should not be considered personalized investment advice. Past performance does not guarantee future results. Always conduct your own research and consider consulting a financial advisor before making investment decisions.