Aldeyra Therapeutics (ALDX) Stock Chart & Stock Price History $2.22 -0.03 (-1.33%) Closing price 04:00 PM EasternExtended Trading$2.22 -0.01 (-0.23%) As of 04:56 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 decreased 41.42%, with a year-to-date return of -55.51%. In the past month, the stock has decreased 8.26%, reflecting recent market activity. As of the latest close, Aldeyra Therapeutics traded at $2.25 with a market cap of $134.77 million and volume of 517,011 shares. Five years ago, the stock traded at $4.27, representing a 48.01% decrease over that period. At the time, it had a market cap of $123.63 million and a volume of 674,341 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+2.78%1 Month Performance-8.26%3 Month Performance-66.80%Year-To-Date Performance-55.51%1 Year Performance-41.42%5 Year Performance-48.01% ALDX Stock Chart for Friday, May, 23, 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 Capitalization05/22/2025$2.25$2.25$2.33$2.21517,011 shs$134.77 million05/21/2025$2.36$2.25-4.66%$2.40$2.22833,621 shs$134.77 million05/20/2025$2.42$2.36-2.48%$2.40$2.23782,799 shs$141.36 million05/19/2025$2.16$2.42+12.04%$2.42$2.15849,118 shs$144.95 million05/16/2025$2.16$2.16$2.17$2.08809,601 shs$129.38 million05/15/2025$2.17$2.16-0.46%$2.20$2.05518,196 shs$129.38 million05/14/2025$2.08$2.17+4.33%$2.18$1.991.10 million shs$129.97 million05/13/2025$2.21$2.08-5.88%$2.26$2.081.32 million shs$124.58 million05/12/2025$2.18$2.21+1.38%$2.31$2.161.16 million shs$132.37 million05/09/2025$2.16$2.18+0.88%$2.30$2.141.09 million shs$130.57 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. 05/08/2025$2.01$2.16+7.78%$2.17$1.931.66 million shs$129.44 million05/07/2025$2.10$2.01-4.52%$2.17$1.902.24 million shs$120.09 million05/06/2025$2.70$2.10-22.22%$2.43$2.024.56 million shs$125.78 million05/05/2025$2.81$2.70-3.91%$2.82$2.67983,923 shs$161.72 million05/02/2025$2.71$2.81+3.69%$2.89$2.65894,560 shs$168.31 million05/01/2025$2.65$2.71+2.26%$2.74$2.381.72 million shs$161.81 million04/30/2025$2.69$2.65-1.49%$2.70$2.57749,806 shs$158.23 million04/29/2025$2.76$2.69-2.54%$2.77$2.63995,495 shs$160.62 million04/28/2025$2.66$2.76+3.76%$2.82$2.61904,879 shs$164.80 million04/25/2025$2.65$2.66+0.38%$2.80$2.581.38 million shs$158.83 million04/24/2025$2.42$2.65+9.50%$2.67$2.381.15 million shs$158.23 million04/23/2025$2.32$2.42+4.31%$2.53$2.361.05 million shs$144.50 million04/22/2025$2.24$2.32+3.57%$2.40$2.251.12 million shs$138.53 million Related Companies GHRS Stock Chart STOK Stock Chart KURA Stock Chart SVRA Stock Chart RGLS Stock Chart URGN Stock Chart UPB Stock Chart SBTX Stock Chart ARVN Stock Chart ETON 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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