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Assembly Biosciences Inc (ASMB)

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Upturn Advisory Summary
12/30/2025: ASMB (3-star) is currently NOT-A-BUY. Pass it for now.
1 Year Target Price $47.75
1 Year Target Price $47.75
| 2 | Strong Buy |
| 0 | Buy |
| 0 | Hold |
| 0 | Sell |
| 0 | Strong Sell |
Analysis of Past Performance
Type Stock | Historic Profit 94.74% | Avg. Invested days 37 | Today’s Advisory PASS |
Upturn Star Rating ![]() | Upturn Advisory Performance | Stock Returns Performance |
Key Highlights
Company Size Small-Cap Stock | Market Capitalization 527.03M USD | Price to earnings Ratio - | 1Y Target Price 47.75 |
Price to earnings Ratio - | 1Y Target Price 47.75 | ||
Volume (30-day avg) 2 | Beta 1.15 | 52 Weeks Range 7.75 - 39.71 | Updated Date 12/30/2025 |
52 Weeks Range 7.75 - 39.71 | Updated Date 12/30/2025 | ||
Dividends yield (FY) - | Basic EPS (TTM) -4.6 |
Earnings Date
Report Date - | When - | Estimate - | Actual - |
Profitability
Profit Margin -103.65% | Operating Margin (TTM) -100.87% |
Management Effectiveness
Return on Assets (TTM) -15.96% | Return on Equity (TTM) -36.94% |
Valuation
Trailing PE - | Forward PE - | Enterprise Value 297225104 | Price to Sales(TTM) 14.17 |
Enterprise Value 297225104 | Price to Sales(TTM) 14.17 | ||
Enterprise Value to Revenue 7.99 | Enterprise Value to EBITDA 0.42 | Shares Outstanding 15817140 | Shares Floating 7458256 |
Shares Outstanding 15817140 | Shares Floating 7458256 | ||
Percent Insiders 32.3 | Percent Institutions 56.16 |
Upturn AI SWOT
Assembly Biosciences Inc

Company Overview
History and Background
Assembly Biosciences, Inc. was founded in 2005. It has focused on developing novel antiviral therapies. Key milestones include its IPO and the advancement of its pipeline candidates through clinical trials. The company has undergone several strategic shifts, focusing its efforts on specific viral diseases.
Core Business Areas
- Antiviral Therapeutics: Assembly Biosciences is dedicated to the discovery and development of innovative small molecule drugs to treat serious viral infections. Their primary focus has been on hepatitis B virus (HBV) and herpes simplex virus (HSV) infections.
Leadership and Structure
Assembly Biosciences is led by a management team with expertise in drug development and the biotechnology sector. The organizational structure is typical for a clinical-stage biopharmaceutical company, with departments focused on research and development, clinical operations, regulatory affairs, and corporate functions.
Top Products and Market Share
Key Offerings
- Product Name 1: Assembly Biosciences' lead product candidate for Hepatitis B Virus (HBV) was historically vebicorvir (ABI-H0732), a triple-combination antiviral therapy designed to inhibit viral DNA replication. While the company has explored various combinations, the precise market share for this specific investigational therapy is not applicable as it has not been commercially launched. Key competitors in the HBV market include Gilead Sciences (with Vemerdi and Vemlidy) and Bristol Myers Squibb (with Baraclude).
- Product Name 2: The company has also advanced candidates for Herpes Simplex Virus (HSV), such as their investigational therapy designed for the treatment of genital herpes. Similar to the HBV program, a market share is not applicable as these are investigational. Competitors in the HSV market include established antiviral providers offering drugs like acyclovir, valacyclovir, and famciclovir.
Market Dynamics
Industry Overview
The antiviral drug market is a significant and growing sector within the pharmaceutical industry, driven by the prevalence of infectious diseases and the need for effective treatments. Factors such as drug resistance, the emergence of new viral strains, and unmet medical needs in specific patient populations continue to shape the industry.
Positioning
Assembly Biosciences has positioned itself as a developer of novel, small molecule antivirals targeting significant unmet needs in viral diseases. Their approach has often involved exploring combination therapies and novel mechanisms of action. However, as a clinical-stage company, its positioning is largely dependent on the success of its pipeline candidates in clinical trials and subsequent regulatory approvals.
Total Addressable Market (TAM)
The total addressable market for hepatitis B virus (HBV) treatments is estimated to be in the billions of dollars globally, with a significant portion of the population affected. For herpes simplex virus (HSV), the market is also substantial due to the widespread nature of the infection. Assembly Biosciences aims to capture a portion of this TAM with its differentiated therapeutic approaches, should its candidates achieve market authorization.
Upturn SWOT Analysis
Strengths
- Focus on significant unmet medical needs in viral diseases
- Development of novel small molecule antiviral candidates
- Experienced management team in drug development
Weaknesses
- Clinical-stage company with no approved products, leading to significant R&D risk
- Dependence on successful clinical trial outcomes and regulatory approvals
- Limited financial resources compared to larger pharmaceutical companies
Opportunities
- Advancement of pipeline candidates through clinical trials to market approval
- Potential for strategic partnerships or acquisitions by larger pharmaceutical companies
- Growing global demand for effective antiviral therapies
Threats
- Failure of clinical trials to demonstrate efficacy or safety
- Intense competition from established pharmaceutical companies and other biotechs
- Changes in regulatory landscape or reimbursement policies
- Emergence of drug-resistant viral strains
Competitors and Market Share
Key Competitors
- Gilead Sciences (GILD)
- Bristol Myers Squibb (BMY)
- ViiV Healthcare (GSK/Pfizer/Shionogi joint venture)
- Bayer AG (BAYN)
Competitive Landscape
Assembly Biosciences faces significant competition from larger, established pharmaceutical companies with broad portfolios and substantial R&D budgets. Its competitive advantage would lie in developing novel mechanisms of action or combination therapies that offer superior efficacy, safety, or convenience compared to existing treatments. However, achieving market penetration against established players requires not only clinical success but also effective commercialization strategies.
Growth Trajectory and Initiatives
Historical Growth: Assembly Biosciences' growth trajectory has been defined by its progress in advancing its antiviral pipeline through preclinical and clinical development phases. Growth has been characterized by increasing R&D expenditures and the achievement of developmental milestones.
Future Projections: Future growth projections for Assembly Biosciences are highly contingent on the successful clinical development and regulatory approval of its investigational therapies. Analyst estimates would typically focus on potential peak sales if approved, and the valuation impact of clinical trial success or failure.
Recent Initiatives: Recent initiatives likely involve ongoing clinical trial activities for its HBV and HSV programs, potential strategic partnerships, and efforts to secure additional funding to support its development pipeline.
Summary
Assembly Biosciences is a clinical-stage biopharmaceutical company focused on developing novel antiviral therapies for significant unmet medical needs. While its innovative approach and experienced team are strengths, it faces substantial risks inherent in drug development, including clinical trial failures and intense competition from established players. Success hinges entirely on the progression and approval of its pipeline candidates in the highly regulated and competitive antiviral market.
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Sources and Disclaimers
Data Sources:
- Company filings (SEC)
- Financial news outlets
- Industry analysis reports
Disclaimers:
This analysis is based on publicly available information and should not be considered as financial advice. Investors should conduct their own due diligence before making any investment decisions.
AI Summarization is directionally correct and might not be accurate.
Summarized information shown could be a few years old and not current.
Fundamental Rating based on AI could be based on old data.
AI-generated summaries may have inaccuracies (hallucinations). Please verify the information before taking action.
About Assembly Biosciences Inc
Exchange NASDAQ | Headquaters South San Francisco, CA, United States | ||
IPO Launch date 2010-12-17 | CEO, President & Director Mr. Jason A. Okazaki J.D. | ||
Sector Healthcare | Industry Biotechnology | Full time employees 73 | Website https://www.assemblybio.com |
Full time employees 73 | Website https://www.assemblybio.com | ||
Assembly Biosciences, Inc., a biotechnology company, develops therapeutic candidates for the treatment of viral diseases worldwide. Its pipeline includes long-acting helicase-primase inhibitors candidates, including ABI-5336 and ABI-1179, which are in Phase 1a/1b clinical studies for recurrent genital herpes; ABI-4334, a capsid assembly modulator designed to disrupt the replication cycle of hepatitis B virus that is in Phase 1b clinical study; and ABI-6250, an orally bioavailable hepatitis delta virus entry inhibitor that is in Phase 1a clinical study. The company also develops ABI-7423, an oral broad-spectrum non-nucleoside polymerase inhibitor that targets transplant-related herpesviruses. It has an option, license, and collaboration agreement with Gilead Sciences, Inc. for the research and development of virology therapies. The company was formerly known as Ventrus Biosciences, Inc. and changed its name to Assembly Biosciences, Inc. in June 2014. Assembly Biosciences, Inc. was incorporated in 2005 and is headquartered in South San Francisco, California.

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