NASDAQ:ALDX Aldeyra Therapeutics (ALDX) Stock Price, News & Analysis $0.63 -0.02 (-3.27%) Closing price 11/12/2026 04:00 PM EasternExtended Trading$0.63 +0.00 (+0.30%) As of 11/12/2026 07:30 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 Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsInsider TradesNews and TrendsOptions ChainOwnershipSEC Filings About Aldeyra Therapeutics Stock (NASDAQ:ALDX) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Aldeyra Therapeutics alerts:Sign Up Key Stats Today's Range$0.60▼$0.6650-Day Range$0.56▼$1.5452-Week Range$0.53▼$5.93Volume569,299 shsAverage Volume900,617 shsMarket Capitalization$38.03 millionP/E RatioN/ADividend YieldN/APrice Target$2.00Consensus RatingHold Company Overview Aldeyra Therapeutics, Inc. is a clinical-stage biotechnology company focused on developing therapies for immune-mediated diseases. The company’s research centers on reactive aldehyde species, or RASP, which are inflammatory signaling molecules that may contribute to ocular and systemic diseases. Aldeyra’s lead investigational product is reproxalap, an eye drop designed to inhibit RASP activity. The company has studied reproxalap in conditions including dry eye disease and allergic conjunctivitis. Aldeyra has also evaluated additional RASP-targeting compounds and has pursued ophthalmic treatments for other diseases involving inflammation and immune dysregulation. Founded in 2008 and headquartered in Lexington, Massachusetts, Aldeyra conducts clinical development activities intended to support potential commercialization in the United States and international markets. The company is led by Todd C. Brady, M.D., Ph.D., who serves as president and chief executive officer. As a development-stage biotechnology company, Aldeyra’s products remain subject to clinical, regulatory, and commercial uncertainties.AI Generated. May Contain Errors. Read More Aldeyra Therapeutics Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks62nd Percentile Overall ScoreALDX MarketRank™: 3.076419785395 of 5 starsAldeyra Therapeutics scored higher than 62% of companies evaluated by MarketBeat, and ranked 374th out of 892 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.6 / 5Analyst RatingHold Consensus RatingAldeyra Therapeutics has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, 1 hold rating, and 1 sell rating.Upside PotentialAldeyra Therapeutics has a consensus price target of $2.00, representing about 217.4% upside from its current price of $0.63.Amount of Analyst CoverageAldeyra Therapeutics has only been the subject of 3 research reports in the past 90 days.Read more about Aldeyra Therapeutics' stock forecast and price target. Earnings and Valuation0.6 / 5Proj. Earnings GrowthGrowing Earnings GrowthEarnings for Aldeyra Therapeutics are expected to grow in the coming year, from ($0.27) to ($0.10) per share.Price to Book Value per Share RatioAldeyra Therapeutics has a P/B Ratio of 1.09. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities. Short Interest3.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted5.94% of the float of Aldeyra Therapeutics has been sold short.Short Interest Ratio / Days to CoverAldeyra Therapeutics has a short interest ratio ("days to cover") of 3.44, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Aldeyra Therapeutics has recently decreased by 0.84%, indicating that investor sentiment is improving. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldAldeyra Therapeutics does not currently pay a dividend.Dividend GrowthAldeyra Therapeutics does not have a long track record of dividend growth. News and Social Media3.6 / 5News Sentiment0.68 News SentimentAldeyra Therapeutics has a news sentiment score of 0.68. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a higher news sentiment than the 0.58 average news sentiment score of Healthcare companies.News Coverage This WeekMarketBeat has tracked 9 news articles for Aldeyra Therapeutics this week, compared to 6 articles on an average week.MarketBeat Follows1 people have added Aldeyra Therapeutics to their MarketBeat watchlist in the last 30 days. Company Ownership1.1 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Aldeyra Therapeutics insiders have not sold or bought any company stock.Percentage Held by Insiders11.80% of the stock of Aldeyra Therapeutics is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by Institutions59.71% of the stock of Aldeyra Therapeutics is held by institutions. High institutional ownership can be a signal of strong market trust in this company.Read more about Aldeyra Therapeutics' insider trading history. Receive ALDX Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Aldeyra Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Submit View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. 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Reports Earnings Results for the Third Quarter and Nine Months Ended September 30, 2026November 6, 2026 | marketscreener.comMDrop these 5 stocks before the market opens tomorrow!The Wall Street Journal called it the "$64 trillion question": is a stock market crash on the way? Weiss Ratings' latest research says 2026 could be very rough for some well-known stocks. A major shift now taking shape in the market could hit some of America's most-loved names hard. Weiss analysts have pinpointed five stocks they believe investors should steer clear of while it plays out. | Weiss Ratings (Ad)Aldeyra Therapeutics (ALDX) Projected to Release Earnings on WednesdayNovember 3, 2026 | americanbankingnews.comAldeyra Therapeutics, Inc. Announces Intent to Submit Formal Dispute Resolution Request for Reproxalap to Treat Dry Eye DiseaseSeptember 29, 2026 | marketscreener.comMAldeyra Therapeutics plans formal FDA dispute resolution request for Reproxalap after third complete response letterSeptember 29, 2026 | msn.comAldeyra Fights Back Against FDA Rejection, Dispute Plan Triggers RallySeptember 29, 2026 | benzinga.comAldeyra Therapeutics, Inc. (ALDX) Discusses FDRR and FDA Review Process for Reproxalap in Dry Eye Disease TranscriptSeptember 29, 2026 | seekingalpha.comSee More Headlines ALDX Stock Analysis - Frequently Asked Questions How have ALDX shares performed this year? Aldeyra Therapeutics' stock was trading at $5.18 on January 1st, 2026. Since then, ALDX shares have decreased by 87.8% and is now trading at $0.6301. How were Aldeyra Therapeutics' earnings last quarter? Aldeyra Therapeutics, Inc. (NASDAQ:ALDX) released its quarterly earnings data on Thursday, November, 5th. The biotechnology company reported ($0.06) earnings per share for the quarter, beating the consensus estimate of ($0.11) by $0.05. When did Aldeyra Therapeutics IPO? Aldeyra Therapeutics (ALDX) raised $16 million in an IPO on Friday, April 11th 2014. The company issued 1,500,000 shares at a price of $10.00-$12.00 per share. Who are Aldeyra Therapeutics' major shareholders? Aldeyra Therapeutics' top institutional shareholders include State Street Corp (0.36%) and Ieq Capital LLC (0.12%). Insiders that own company stock include Perceptive Advisors Llc, Todd C Brady, Stephen Machatha, Richard Douglas, Bruce Greenberg and Michael Alfieri. View institutional ownership trends. How do I buy shares of Aldeyra Therapeutics? Shares of ALDX stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Aldeyra Therapeutics own? Based on aggregate information from My MarketBeat watchlists, some other companies that Aldeyra Therapeutics investors own include Tesla (TSLA), NVIDIA (NVDA), Micron Technology (MU), Advanced Micro Devices (AMD), Sorrento Therapeutics (SRNE), Viking Therapeutics (VKTX) and Plug Power (PLUG). Company Calendar Last Earnings11/05/2026Today11/12/2026Fiscal Year End12/31/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Red Zone (1m+) 1-Year History Nov 25 Feb 26 May 26 Aug 26 Nov 26 ALDX's financial health is in the Red zone, according to TradeSmith. ALDX has been in this zone for over one month. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Pharmaceuticals Sub-IndustryPharmaceuticals Current SymbolNASDAQ:ALDX CIK1341235 Webwww.aldeyra.com Phone781-761-4904Fax781-270-0630Employees6Year Founded2004Price Target and Rating Average Price Target for Aldeyra Therapeutics$2.00 High Price Target$2.00 Low Price Target$2.00 Potential Upside/Downside+217.4%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage3 Analysts Profitability EPS (Trailing Twelve Months)($0.32) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$33.85 million Net MarginsN/A Pretax MarginN/A Return on Equity-47.97% Return on Assets-33.34% Debt Debt-to-Equity RatioN/A Current Ratio5.45 Quick Ratio5.45 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.58 per share Price / Book1.09Miscellaneous Outstanding Shares60,360,000Free Float53,235,000Market Cap$38.03 million OptionableOptionable Beta1.32 Social Links 10 Stocks Powering The Next AI Boom The AI boom is creating opportunities across semiconductors, cloud computing, enterprise software, infrastructure, cybersecurity, and automation. 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