Altimmune (ALT) Stock Chart & Stock Price History $6.74 +0.79 (+13.28%) Closing price 04:00 PM EasternExtended Trading$6.80 +0.06 (+0.89%) As of 07:59 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Altimmune Stock Price Performance The Altimmune (ALT) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 7.67%, with a year-to-date return of -6.52%. In the past month, the stock has increased 20.57%, reflecting recent market activity. As of the latest close, Altimmune traded at $5.95 with a market cap of $482.59 million and volume of 2.71 million shares. Five years ago, the stock traded at $6.05, representing a 11.40% increase over that period. At the time, it had a market cap of $102.32 million and a volume of 1.25 million shares. Receive ALT Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Altimmune and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+23.44%1 Month Performance+20.57%3 Month Performance+23.67%Year-To-Date Performance-6.52%1 Year Performance+7.67%5 Year Performance+11.40% ALT Stock Chart for Tuesday, June, 10, 2025 ALT Chart by TradingView Altimmune 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 Capitalization06/09/2025$5.62$5.95+5.87%$5.96$5.572.71 million shs$482.59 million06/06/2025$5.46$5.62+2.93%$5.81$5.473.86 million shs$455.82 million06/05/2025$5.49$5.46-0.55%$5.66$5.382.30 million shs$442.84 million06/04/2025$5.42$5.49+1.29%$5.57$5.344.19 million shs$445.28 million06/03/2025$5.30$5.42+2.26%$5.53$5.292.50 million shs$439.60 million06/02/2025$5.43$5.30-2.39%$5.52$5.152.50 million shs$429.87 million05/30/2025$5.61$5.43-3.21%$5.59$5.353.96 million shs$440.41 million05/29/2025$5.49$5.61+2.19%$5.74$5.421.41 million shs$455.01 million05/28/2025$5.51$5.49-0.36%$5.56$5.381.42 million shs$445.28 million05/27/2025$5.71$5.51-3.50%$5.81$5.482.41 million shs$446.90 million Get the Latest News and Ratings for ALT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Altimmune and its competitors with MarketBeat's FREE daily newsletter. 05/26/2025$5.71$5.71$5.79$5.621.65 million shs$463.12 million05/23/2025$5.77$5.71-1.04%$5.79$5.621.65 million shs$463.12 million05/22/2025$5.59$5.77+3.22%$5.92$5.541.47 million shs$467.99 million05/21/2025$5.85$5.59-4.44%$5.95$5.542.16 million shs$453.39 million05/20/2025$5.50$5.85+6.36%$5.99$5.412.01 million shs$474.48 million05/19/2025$5.58$5.50-1.43%$5.55$5.341.50 million shs$446.09 million05/16/2025$5.78$5.58-3.46%$5.88$5.512.11 million shs$429.74 million05/15/2025$5.70$5.78+1.40%$5.85$5.601.72 million shs$445.14 million05/14/2025$5.76$5.70-1.04%$5.89$5.602.19 million shs$438.98 million05/13/2025$6.01$5.76-4.16%$6.13$5.494.58 million shs$443.60 million05/12/2025$5.59$6.01+7.51%$6.07$5.802.95 million shs$462.85 million05/09/2025$5.81$5.59-3.72%$6.05$5.522.84 million shs$430.51 million Related Companies Indivior Stock Price Chart Apogee Therapeutics Stock Price Chart Disc Medicine Stock Price Chart Bausch Health Companies Stock Price Chart Beam Therapeutics Stock Price Chart Arcutis Biotherapeutics Stock Price Chart Biohaven Stock Price Chart Schrödinger Stock Price Chart Edgewise Therapeutics Stock Price Chart Janux Therapeutics Stock Price Chart Receive ALT Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Altimmune and its competitors with MarketBeat's FREE daily newsletter. 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