Assembly Biosciences (ASMB) Stock Chart & Stock Price History $18.40 +0.48 (+2.68%) Closing price 08/1/2025 04:00 PM EasternExtended Trading$18.29 -0.11 (-0.60%) As of 08/1/2025 07:07 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 28.76%, with a year-to-date return of 16.60%. In the past month, the stock has increased 0.55%, reflecting recent market activity. As of the latest close, Assembly Biosciences traded at $18.40 with a market cap of $140.58 million and volume of 61,476 shares. Five years ago, the stock traded at a split-adjusted price of $266.40, representing a 93.09% decrease over that period. At the time, it had a market cap of $726.38 million and a volume of 18,914 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-5.64%1 Month Performance+0.55%3 Month Performance+29.76%Year-To-Date Performance+16.60%1 Year Performance+28.76%5 Year Performance-93.09% ASMB Stock Chart for Saturday, August, 2, 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 Capitalization08/01/2025$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 million07/21/2025$18.68$18.25-2.30%$18.70$18.0230,667 shs$139.43 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. 07/18/2025$19.30$18.68-3.21%$19.50$18.5356,467 shs$142.72 million07/17/2025$18.96$19.30+1.79%$19.42$18.9655,167 shs$147.41 million07/16/2025$18.64$18.96+1.72%$19.00$18.4017,344 shs$144.85 million07/15/2025$18.84$18.64-1.06%$18.90$17.9329,948 shs$142.37 million07/14/2025$18.75$18.84+0.48%$18.86$18.1313,726 shs$143.90 million07/11/2025$18.22$18.75+2.91%$19.11$18.2430,240 shs$143.21 million07/10/2025$18.72$18.22-2.67%$18.68$18.0122,300 shs$139.20 million07/09/2025$18.09$18.72+3.48%$18.72$18.0220,474 shs$143.02 million07/08/2025$18.56$18.09-2.53%$18.89$18.0364,999 shs$138.17 million07/07/2025$18.15$18.56+2.26%$18.99$18.0027,519 shs$141.80 million07/04/2025$18.15$18.15$18.46$17.7615,693 shs$138.63 million07/03/2025$18.30$18.15-0.82%$18.46$17.7615,693 shs$138.67 million07/02/2025$17.73$18.30+3.21%$18.77$17.7949,285 shs$139.81 million07/01/2025$18.12$17.73-2.15%$18.92$17.4582,811 shs$135.46 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 8/2/2025 by MarketBeat.com Staff From Our PartnersElon’s Secret Social Security BombshellTo All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social S...Banyan Hill Publishing | SponsoredChina just unlocked Nvidia’s AI chips—what that means for youTired of Missing Big AI Moves Like Nvidia? You’re not the problem—your trading system is. Tim’s XGPT system...Timothy Sykes | SponsoredIs Elon's empire crumbling?The Tesla Shock Nobody Sees Coming While headlines scream "Tesla is doomed"... 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