Aldeyra Therapeutics (ALDX) Stock Chart & Stock Price History $5.01 +0.36 (+7.74%) Closing price 04:00 PM EasternExtended Trading$5.04 +0.03 (+0.60%) 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider 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 29.79%, with a year-to-date return of 0.40%. In the past month, the stock has increased 80.22%, reflecting recent market activity. As of the latest close, Aldeyra Therapeutics traded at $4.65 with a market cap of $278.52 million and volume of 1.38 million shares. Five years ago, the stock traded at $5.70, representing a 12.11% decrease over that period. At the time, it had a market cap of $143.59 million and a volume of 4.69 million 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+10.84%1 Month Performance+80.22%3 Month Performance+136.32%Year-To-Date Performance+0.40%1 Year Performance+29.79%5 Year Performance-12.11% ALDX Stock Chart for Monday, July, 14, 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 Capitalization07/11/2025$4.80$4.65-3.12%$4.81$4.551.38 million shs$278.52 million07/10/2025$4.52$4.80+6.19%$4.92$4.441.41 million shs$287.52 million07/09/2025$4.33$4.52+4.39%$4.60$4.341.74 million shs$270.75 million07/08/2025$4.35$4.33-0.46%$4.44$4.121.10 million shs$259.35 million07/07/2025$4.31$4.35+1.05%$4.43$4.16906,880 shs$260.57 million07/04/2025$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 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. 06/27/2025$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 million06/20/2025$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 million Related Companies AUPH Stock Chart ARDX Stock Chart ELVN Stock Chart VERV Stock Chart NAGE Stock Chart DYN Stock Chart CDTX Stock Chart COLL Stock Chart BGM Stock Chart PHVS 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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