NASDAQ:ASMB Assembly Biosciences (ASMB) Stock Price, News & Analysis $23.67 +0.01 (+0.04%) Closing price 09/25/2026 04:00 PM EasternExtended Trading$23.72 +0.04 (+0.19%) As of 09/25/2026 07:30 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsInsider TradesNews and TrendsOptions ChainOwnershipSEC FilingsShort Interest About Assembly Biosciences Stock (NASDAQ:ASMB) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Assembly Biosciences alerts:Sign Up Key Stats Today's Range$23.43▼$24.2550-Day Range$23.66▼$36.7252-Week Range$21.80▼$39.71Volume143,522 shsAverage Volume386,963 shsMarket Capitalization$481.92 millionP/E Ratio23.21Dividend YieldN/APrice Target$47.50Consensus RatingModerate Buy Company Overview Assembly Biosciences, Inc. is a clinical-stage biotechnology company developing oral therapies for serious viral infections. Its research programs have focused primarily on chronic hepatitis B virus (HBV) infection and herpesvirus diseases, with the goal of addressing areas where existing treatments may not provide a functional cure or durable disease control. The company’s pipeline includes investigational HBV capsid assembly modulators, including ABI-4334, designed to interfere with key stages of the HBV lifecycle. Assembly is also developing antiviral candidates for herpes simplex virus (HSV), including ABI-5366, a long-acting helicase-primase inhibitor intended to prevent viral replication. These programs remain investigational and are subject to clinical and regulatory evaluation. Assembly Biosciences has historically advanced its programs through a combination of internal research and strategic collaboration. The company entered into a collaboration with Gilead Sciences covering certain HBV research and development activities. Assembly is led by William M. Collier, who serves as president and chief executive officer.AI Generated. May Contain Errors. Read More Assembly Biosciences Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks73rd Percentile Overall ScoreASMB MarketRank™: Assembly Biosciences scored higher than 73% of companies evaluated by MarketBeat, and ranked 199th out of 908 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion4.4 / 5Analyst RatingModerate Buy Consensus RatingAssembly Biosciences has received a consensus rating of Moderate Buy. The company's average rating score is 2.83, and is based on 1 strong buy rating, 4 buy ratings, no hold ratings, and 1 sell rating.Upside PotentialAssembly Biosciences has a consensus price target of $47.50, representing about 100.7% upside from its current price of $23.67.Amount of Analyst CoverageAssembly Biosciences has been the subject of 5 research reports in the past 90 days, demonstrating strong analyst interest in this stock.Read more about Assembly Biosciences' stock forecast and price target. Earnings and Valuation1.3 / 5Proj. Earnings Growth-97.81% Earnings GrowthEarnings for Assembly Biosciences are expected to decrease by -97.81% in the coming year, from $2.28 to $0.05 per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Assembly Biosciences is 23.21, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 38.92.Price to Earnings Ratio vs. SectorThe P/E ratio of Assembly Biosciences is 23.21, which means that it is trading at a less expensive P/E ratio than the Healthcare sector average P/E ratio of about 274.42.Price to Book Value per Share RatioAssembly Biosciences has a P/B Ratio of 1.82. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.Read more about Assembly Biosciences' valuation and earnings. Short Interest2.0 / 5Short Interest LevelBearish Percentage of Shares Shorted10.67% of the float of Assembly Biosciences has been sold short.Short Interest Ratio / Days to CoverAssembly Biosciences has a short interest ratio ("days to cover") of 6.26.Change versus previous monthShort interest in Assembly Biosciences has recently decreased by 1.16%, indicating that investor sentiment is improving. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldAssembly Biosciences does not currently pay a dividend.Dividend GrowthAssembly Biosciences does not have a long track record of dividend growth. News and Social Media3.4 / 5News Sentiment1.48 News SentimentAssembly Biosciences has a news sentiment score of 1.48. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a higher news sentiment than the 0.73 average news sentiment score of Healthcare companies.News Coverage This WeekMarketBeat has tracked 2 news articles for Assembly Biosciences this week, compared to 3 articles on an average week.Search Interest5 people have searched for ASMB on MarketBeat in the last 30 days. This is an increase of 67% compared to the previous 30 days.MarketBeat FollowsOnly 1 people have added Assembly Biosciences to their MarketBeat watchlist in the last 30 days. This is a decrease of 0% compared to the previous 30 days. Company Ownership0.4 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Assembly Biosciences insiders have not sold or bought any company stock.Percentage Held by Insiders3.50% of the stock of Assembly Biosciences is held by insiders.Percentage Held by Institutions19.92% of the stock of Assembly Biosciences is held by institutions.Read more about Assembly Biosciences' insider trading history. 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Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. ASMB Stock News HeadlinesAssembly Biosciences (ASMB) Receives a Buy from Mizuho SecuritiesSeptember 12, 2026 | theglobeandmail.comAssembly Biosciences to Present at the H.C. Wainwright & Co. 28th Annual Global Investment ConferenceSeptember 10, 2026 | markets.businessinsider.com"How Much Can I Actually Spend Each Year With $2.5M Saved?"Having $2.5 million saved puts you ahead of most Americans, but how long it lasts depends on the decisions you make with it. Using the 4% rule as a benchmark, that balance could translate to about $100,000 in year one, adjusted upward for inflation each year after. But the 4% rule has potential downsides and may not fit every portfolio. A financial advisor can help size and structure a retirement budget around your income sources, taxes, and goals. SmartAsset's free quiz matches nearly 50,000 people each month with vetted fiduciary advisors.September 26 at 1:00 AM | SmartAsset (Ad)Assembly Biosciences to Present at the H.C. Wainwright & Co. 28th Annual Global Investment ConferenceSeptember 10, 2026 | globenewswire.comAssembly Biosciences Exercises Option to Share US Costs, Profits for Herpes Program With GileadSeptember 8, 2026 | finance.yahoo.comAssembly Biosciences Exercises U.S. Profit-Share Option with Gilead for HSV Helicase-Primase Inhibitor ProgramSeptember 8, 2026 | globenewswire.comUBS initiates coverage of Assembly Biosciences (ASMB) with buy recommendationSeptember 2, 2026 | msn.comAssembly Biosciences: Gilead Advancements For GS-1179 And ABI-6250 Is A Bullish SignalAugust 16, 2026 | seekingalpha.comSee More Headlines ASMB Stock Analysis - Frequently Asked Questions How have ASMB shares performed this year? Assembly Biosciences' stock was trading at $34.01 at the beginning of the year. Since then, ASMB shares have decreased by 30.4% and is now trading at $23.67. How were Assembly Biosciences' earnings last quarter? Assembly Biosciences, Inc. (NASDAQ:ASMB) issued its quarterly earnings results on Thursday, August, 13th. The biopharmaceutical company reported ($0.20) earnings per share for the quarter, beating analysts' consensus estimates of ($0.72) by $0.52. The biopharmaceutical company had revenue of $13.37 million for the quarter, compared to the consensus estimate of $8.60 million. Assembly Biosciences had a negative net margin of 0.06% and a negative trailing twelve-month return on equity of 0.02%. When did Assembly Biosciences' stock split? Shares of Assembly Biosciences reverse split on Monday, February 12th 2024.The 1-12 reverse split was announced on Monday, February 12th 2024. The number of shares owned by shareholders was adjusted after the market closes on Monday, February 12th 2024. An investor that had 100 shares of stock prior to the reverse split would have 8 shares after the split. When did Assembly Biosciences IPO? Assembly Biosciences (ASMB) raised $19 million in an initial public offering (IPO) on Thursday, December 16th 2010. The company issued 2,900,000 shares at $6.00-$7.00 per share. Who are Assembly Biosciences' major shareholders? Assembly Biosciences' top institutional investors include Seven Fleet Capital Management LP (2.13%), Squarepoint Ops LLC (0.17%), Bank of New York Mellon Corp (0.15%) and Engineers Gate Manager LP (0.09%). Insiders that own company stock include Alexander Schornstein, John G Mchutchison, Jason A Okazaki, Jeanette M Bjorkquist, Nicole S White and Michael Houghton. View institutional ownership trends. How do I buy shares of Assembly Biosciences? Shares of ASMB stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Assembly Biosciences own? Based on aggregate information from My MarketBeat watchlists, some other companies that Assembly Biosciences investors own include Waste Connections (WCN), Voyager Therapeutics (VYGR), DiamondRock Hospitality (DRH), AUO (AUOTY), American Water Works (AWK), The RMR Group (RMR) and iShares Micro-Cap ETF (IWC). Company Calendar Last Earnings8/13/2026Today9/25/2026Next Earnings (Estimated)11/09/2026Fiscal Year End12/31/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Yellow Zone (1w+) 1-Year History Sep 25 Dec 25 Mar 26 Jun 26 Sep 26 For the last 11 days, ASMB's financial health has been in the Yellow zone, according to TradeSmith. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Pharmaceuticals Sub-IndustryPharmaceuticals Current SymbolNASDAQ:ASMB CIK1426800 Webwww.assemblybio.com Phone(833) 509-4583Fax646-706-5101Employees73Year Founded2005Price Target and Rating Average Price Target for Assembly Biosciences$47.50 High Price Target$52.00 Low Price Target$43.00 Potential Upside/Downside+100.7%Consensus RatingModerate Buy Rating Score (0-4)2.83 Research Coverage6 Analysts Profitability EPS (Trailing Twelve Months)$1.02 Trailing P/E Ratio23.21 Forward P/E Ratio10.38 P/E GrowthN/ANet Income-$6.12 million Net Margins-0.06% Pretax Margin-0.06% Return on Equity-0.02% Return on Assets-0.02% Debt Debt-to-Equity RatioN/A Current Ratio13.99 Quick Ratio13.99 Sales & Book Value Annual Sales$72.30 million Price / Sales6.67 Cash FlowN/A Price / Cash FlowN/A Book Value$13.04 per share Price / Book1.82Miscellaneous Outstanding Shares20,360,000Free Float19,648,000Market Cap$481.92 million OptionableOptionable Beta1.13 Social Links (Almost) Everything You Need To Know About The EV MarketLooking to profit from the electric vehicle mega-trend? Click the link to see our list of which EV stocks show the most long-term potential.Get This Free Report This page (NASDAQ:ASMB) was last updated on 9/26/2026 by MarketBeat.com Staff. From Our PartnersA letter from Shannon StansberryPorter Stansberry nearly canceled the entire project. 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