Aldeyra Therapeutics (ALDX) Stock Chart & Stock Price History $4.30 +0.31 (+7.63%) Closing price 07/3/2025 03:50 PM EasternExtended Trading$4.30 0.00 (0.00%) As of 07/3/2025 04:58 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 ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Aldeyra Therapeutics Stock Price Performance The Aldeyra Therapeutics (ALDX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 34.95%, with a year-to-date return of -13.73%. In the past month, the stock has increased 75.71%, reflecting recent market activity. As of the latest close, Aldeyra Therapeutics traded at $4.31 with a market cap of $257.87 million and volume of 757,113 shares. Five years ago, the stock traded at $4.17, representing a 3.24% increase over that period. At the time, it had a market cap of $124.22 million and a volume of 779,916 shares. Receive ALDX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Aldeyra Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+12.40%1 Month Performance+75.71%3 Month Performance+127.78%Year-To-Date Performance-13.73%1 Year Performance+34.95%5 Year Performance+3.24% ALDX Stock Chart for Saturday, July, 5, 2025 ALDX Chart by TradingView Aldeyra Therapeutics 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 Capitalization07/04/2025$4.31$4.31$4.34$4.00757,113 shs$257.85 million07/03/2025$4.00$4.31+7.62%$4.34$4.00757,113 shs$257.87 million07/02/2025$3.93$4.00+1.78%$4.21$3.941.50 million shs$239.60 million07/01/2025$3.83$3.93+2.61%$4.04$3.73922,837 shs$235.41 million06/30/2025$3.79$3.83+1.06%$3.98$3.681.51 million shs$229.42 million06/27/2025$3.87$3.79-2.07%$4.00$3.742.54 million shs$227.02 million06/26/2025$3.51$3.87+10.26%$3.93$3.521.96 million shs$231.80 million06/25/2025$3.35$3.51+4.78%$3.64$3.291.25 million shs$210.25 million06/24/2025$3.09$3.35+8.41%$3.37$3.00684,564 shs$200.67 million06/23/2025$3.05$3.09+1.31%$3.16$2.95584,667 shs$185.09 million Get the Latest News and Ratings for ALDX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Aldeyra Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 06/20/2025$3.17$3.05-3.79%$3.29$3.01801,493 shs$182.70 million06/19/2025$3.17$3.17$3.20$3.01688,142 shs$189.88 million06/18/2025$3.09$3.17+2.59%$3.20$3.01688,142 shs$189.88 million06/17/2025$3.02$3.09+2.32%$3.24$2.97929,892 shs$185.08 million06/16/2025$2.78$3.02+8.63%$3.04$2.601.16 million shs$180.89 million06/13/2025$2.93$2.78-5.12%$2.95$2.751.18 million shs$166.51 million06/12/2025$2.96$2.93-1.01%$3.08$2.90744,359 shs$175.50 million06/11/2025$2.68$2.96+10.45%$3.04$2.671.04 million shs$177.29 million06/10/2025$2.67$2.68+0.37%$2.87$2.67730,135 shs$160.52 million06/09/2025$2.66$2.67+0.38%$2.72$2.61530,634 shs$159.92 million06/06/2025$2.45$2.66+8.57%$2.67$2.47661,368 shs$159.32 million06/05/2025$2.47$2.45-0.81%$2.54$2.42536,961 shs$146.75 million06/04/2025$2.35$2.47+5.11%$2.52$2.33693,026 shs$147.94 million Related Companies AVDL Stock Chart ARDX Stock Chart XERS Stock Chart CRON Stock Chart USNA Stock Chart XNCR Stock Chart KALV Stock Chart RLAY Stock Chart RGLS Stock Chart AMLX Stock Chart Receive ALDX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Aldeyra Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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