Assembly Biosciences

ASMB

Biotechnology · Healthcare

Price

$26.81

+0.97 (+3.75%)

Market Cap

$426.1M

Exchange

NASDAQ

Winston Score

Winston is serious

Below-average fundamentals — multiple weak pillars.

Share count rising — dilution

+210.8% over 4y

The company has issued more shares over this period, which dilutes each existing shareholder’s stake.

Diluted shares outstanding: 3.6M (2021) → 11.2M (2025)

Assembly Biosciences, Inc., a clinical-stage biotechnology company, discovers and develops therapeutic candidates for the treatment of hepatitis B virus (HBV) infection in the United States. The company's lead product candidate is Vebicorvir, which as completed Phase 2 clinical trials to treat patients with chronic HBV infection. It is also developing ABI-H3733 that has completed Phase 1a clinical study, and ABI-4334, which is in pre-clinical trials for the treatment of HBV. The company has coll

Winston Score History

Growth Profile

For growth stock investors

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

-12.8% YoY

YoY Growth Rate

Revenue declining

EPS Growth

+53.8% YoY

YoY Growth Rate

Strong earnings growth

R&D Spend

$65M/ year

↑ Rising (+16% vs prior year)

89.6% of revenue

5.0x the sector average (18%)

Investing heavily in future products and technology

Insider Activity

44.6%ownership

↑ Rising

Insiders increasing their stake — aligned with shareholders

Cash Runway

~4 months

$31M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

Short runway — potential dilution ahead through share issuance

Heavy R&D investment

Assembly Biosciences is putting 90% of revenue into R&D and that number is rising. That's 5.0x the sector average.

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Score breakdown

Every number that matters to educated investors.

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Quality

Gross Margin

99.7%

Premium pricing power — 99.7% gross margin

Operating Margin

-138.4%

Losing money on operations — -138.4%

ROCE

-5.7%

Weak — -5.7% return on capital

Negative ROIC means the business is losing money on every dollar invested in it.

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Growth

Sales YoY

+121.1%

Fast-growing sales (121.1% YoY)

EPS YoY

N/A

—

Data not available

EPS Consistency

2/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion

N/A

Data not available

FCF Margin

-56.0%

Burning cash (-56.0%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

Debt / Equity

0.01

Conservative — low debt load (0.01)

Interest Cover

N/A

—

Data not available

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Valuation

P/E Ratio (TTM)

N/M

Negative earnings — P/E not meaningful

P/E vs Forward

N/A

not available

Data not available

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Dividends

Not applicable for this business.

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