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Stock comparison · Signal date 2026-11-06

BIIB vs MRNA: stock comparison and AI forecast

Biogen Inc. (BIIB) and Moderna, Inc. (MRNA) compared on price performance, valuation, profitability and the daily AI forecast. · Alpha · vs market

Share
Nasdaq · Biological Products, (No Diagnostic Substances)

BIIB Biogen Inc.

Price
$248.35 +29.8% · 6M
Market Cap
$36.71B
P/E Ratio
107.1x
Size
large-cap
AI Forecast
Full analysis →
Nasdaq · Biological Products, (No Diagnostic Substances)

MRNA Moderna, Inc.

Price
$254.19 +423.7% · 6M
Market Cap
$101.48B
P/E Ratio
–
Size
large-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.

6M · 2026-05-07 → 2026-11-06

Six-month price performance

Closing prices rebased to 100 at the start of the window.

105210315420525
BIIB +29.8% MRNA +423.7%
BIIB · MRNA

Key facts

  • MRNA is 2.8 times larger than BIIB by market capitalization ($101.48B against $36.71B).
  • Over the last six months MRNA returned +423.7% and BIIB +29.8%.
  • BIIB turns 3.4% of its revenue into net income, against -124.5% for MRNA.
  • MRNA carries 0.97 times debt per unit of equity, against 0.69 times for BIIB.
  • Both companies share the SEC industry classification Biological Products, (No Diagnostic Substances).
Fundamentals

Fundamentals side by side

Trailing twelve months.

Valuation & Market

MetricBIIBMRNA
Market Cap$36.71B$101.48B
P/E Ratio107.05x–
P/B Ratio1.94x14.84x
EPS$2.32$-7.08
Book Value/Share$128.01$17.13
Revenue/Share$69.66$5.61
FCF/Share$14.01$-4.93

Profitability & Margins

MetricBIIBMRNA
ROE1.8%-40.8%
ROA1.1%-20.7%
ROIC–-25.6%
Gross Margin74.0%18.9%
Operating Margin–-130.8%
Net Margin3.4%-124.5%
EBT Margin4.3%-121.8%
Tax Rate21.9%-2.2%

Financial Health

MetricBIIBMRNA
Current Ratio1.95x3.62x
Quick Ratio1.37x3.47x
D/E Ratio0.69x0.97x
Financial Leverage1.69x1.97x
Interest Coverage9.2x-85.7x
Working Capital$3.69B$5.32B

Cash Flow

MetricBIIBMRNA
Operating Cash Flow$2.25B-$1.78B
Free Cash Flow$2.07B-$1.97B
Capital Spending-$176M-$185M
OCF Growth YoY-8.4%–
FCF Growth YoY-10.1%–
FCF/Sales20.1%-87.9%
CapEx/Sales1.7%8.3%

Operational Efficiency

MetricBIIBMRNA
Asset Turnover0.32x0.17x
Receivables Turnover–1.6x
Inventory Turnover1.2x5.8x
Fixed Assets Turnover3.5x1.1x
Days Sales Outstanding–223 days
Days Inventory303 days63 days
Payables Period59 days52 days
Cash Conversion Cycle–233 days

Income Statement

MetricBIIBMRNA
Total Revenue$10.30B$2.24B
Operating Income–-$2.93B
Net Income$348M-$2.79B
R&D Expense$2.15B$2.66B
SG&A Expense$2.75B–
Cost of Goods Sold$2.68B$1.82B

Dividend & Shareholder Information

MetricBIIBMRNA
Shares Outstanding148M399M
Net Income Growth-78.4%–
EPS Growth-78.8%–
FAQ

BIIB vs MRNA: stock comparison and AI forecast

Which is bigger, BIIB or MRNA?

MRNA is 2.8 times larger than BIIB by market capitalization ($101.48B against $36.71B).

Which stock performed better over the last six months, BIIB or MRNA?

Over the last six months MRNA returned +423.7% and BIIB +29.8%.

Which one does Intratio's AI model rank higher, BIIB or MRNA?

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.