Assembly Biosciences (ASMB) Stock Chart & Stock Price History $26.93 +0.28 (+1.05%) Closing price 08/22/2025 04:00 PM EasternExtended Trading$26.82 -0.11 (-0.41%) As of 08/22/2025 04:29 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 Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Assembly Biosciences Stock Price Performance The Assembly Biosciences (ASMB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 84.33%, with a year-to-date return of 70.66%. In the past month, the stock has increased 46.92%, reflecting recent market activity. As of the latest close, Assembly Biosciences traded at $26.93 with a market cap of $206.55 million and volume of 101,414 shares. Five years ago, the stock traded at a split-adjusted price of $261.72, representing a 89.71% decrease over that period. At the time, it had a market cap of $707.70 million and a volume of 14,360 shares. Receive ASMB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Assembly Biosciences and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+4.54%1 Month Performance+46.92%3 Month Performance+99.19%Year-To-Date Performance+70.66%1 Year Performance+84.33%5 Year Performance-89.71% ASMB Stock Chart for Saturday, August, 23, 2025 ASMB Chart by TradingView Assembly Biosciences Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/22/2025$26.65$26.93+1.05%$27.17$26.50101,414 shs$206.55 million08/21/2025$26.15$26.65+1.91%$26.77$26.01186,859 shs$204.41 million08/20/2025$25.22$26.15+3.69%$26.25$24.93251,864 shs$200.57 million08/19/2025$25.76$25.22-2.10%$25.59$24.80187,107 shs$193.44 million08/18/2025$25.44$25.76+1.26%$26.24$25.30102,151 shs$197.58 million08/15/2025$24.96$25.44+1.92%$25.62$24.6891,462 shs$195.13 million08/14/2025$24.75$24.96+0.85%$25.11$23.71135,264 shs$191.49 million08/13/2025$23.99$24.75+3.17%$24.94$23.67195,969 shs$189.83 million08/12/2025$23.60$23.99+1.65%$23.99$22.89127,206 shs$184.00 million08/11/2025$23.97$23.60-1.54%$24.71$22.50227,327 shs$180.26 million Get the Latest News and Ratings for ASMB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Assembly Biosciences and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025$21.22$23.97+12.96%$23.97$21.00480,844 shs$183.08 million08/07/2025$19.43$21.22+9.21%$22.50$19.13145,350 shs$162.12 million08/06/2025$18.86$19.43+3.02%$19.43$18.5057,750 shs$148.45 million08/05/2025$19.40$18.86-2.78%$19.21$18.4168,095 shs$144.05 million08/04/2025$18.40$19.40+5.43%$19.43$17.9852,476 shs$148.22 million08/01/2025$17.92$18.40+2.68%$18.98$16.9061,476 shs$140.58 million07/31/2025$17.90$17.92+0.11%$18.39$17.5510,680 shs$136.91 million07/30/2025$18.36$17.90-2.51%$18.93$17.7316,146 shs$136.72 million07/29/2025$19.50$18.36-5.85%$19.50$18.2418,518 shs$140.27 million07/28/2025$18.55$19.50+5.12%$19.50$18.3019,440 shs$148.98 million07/25/2025$18.45$18.55+0.54%$18.97$18.3016,498 shs$141.72 million07/24/2025$18.33$18.45+0.65%$18.50$17.8721,313 shs$140.92 million07/23/2025$18.68$18.33-1.87%$18.94$17.8711,729 shs$140.04 million07/22/2025$18.25$18.68+2.36%$18.90$17.5727,540 shs$142.72 million Related Companies Nektar Therapeutics Stock Price Chart Omeros Stock Price Chart Cumberland Pharmaceuticals Stock Price Chart Eli Lilly and Company Stock Price Chart Johnson & Johnson Stock Price Chart AbbVie Stock Price Chart Merck & Co., Inc. Stock Price Chart Pfizer Stock Price Chart Bristol Myers Squibb Stock Price Chart Zoetis Stock Price Chart Receive ASMB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Assembly Biosciences and its competitors with MarketBeat's FREE daily newsletter. This page (NASDAQ:ASMB) was last updated on 8/23/2025 by MarketBeat.com Staff From Our PartnersBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. B...Priority Gold | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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