NASDAQ:ALDX Aldeyra Therapeutics (ALDX) Stock Price, News & Analysis $2.13 -0.10 (-4.48%) Closing price 07/8/2026 04:00 PM EasternExtended Trading$2.12 0.00 (-0.23%) As of 08:40 AM 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 EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock 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$2.07▼$2.2450-Day Range$1.50▼$2.4352-Week Range$1.07▼$6.18Volume3.09 million shsAverage Volume1.77 million shsMarket Capitalization$128.48 millionP/E RatioN/ADividend YieldN/APrice Target$5.50Consensus RatingHold Company Overview Aldeyra Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel small molecule therapies for immune-mediated diseases. The company’s research efforts center on targeted alkenals, a class of reactive aldehyde species that play a key role in inflammatory pathways. By selectively modulating these pathways, Aldeyra aims to address both ocular and systemic indications with high unmet medical need. The company’s lead product candidate, reproxalap, is being investigated in several ophthalmic disorders, including dry eye disease, allergic conjunctivitis and non-infectious anterior uveitis. Aldeyra is also developing ADX-2191, an intravitreal formulation targeting proliferative vitreoretinopathy, a serious complication of retinal detachment surgery. In addition to its ophthalmology pipeline, Aldeyra has earlier-stage programs exploring systemic indications where reactive aldehyde species contribute to inflammation and tissue damage. Founded in 2009 and headquartered in Lexington, Massachusetts, Aldeyra is led by a management team with extensive experience in ophthalmology and biopharmaceutical development. Under the leadership of Chief Executive Officer Fredric A. Hargreaves, the company collaborates with clinical research centers across North America and Europe to advance its pipeline through late-stage clinical trials. Aldeyra’s strategy emphasizes rigorous clinical validation, strategic partnerships and readiness for commercial launch upon regulatory approval.AI Generated. May Contain Errors. Read More Aldeyra Therapeutics Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks62nd Percentile Overall ScoreALDX MarketRank™: Aldeyra Therapeutics scored higher than 62% of companies evaluated by MarketBeat, and ranked 272nd out of 844 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.2 / 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, 2 hold ratings, and 1 sell rating.Upside PotentialAldeyra Therapeutics has a consensus price target of $5.50, representing about 158.2% upside from its current price of $2.13.Amount of Analyst CoverageAldeyra Therapeutics has only been the subject of 1 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 ($0.43) to ($0.22) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Aldeyra Therapeutics is -4.63, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Aldeyra Therapeutics is -4.63, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioAldeyra Therapeutics has a P/B Ratio of 2.88. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.Read more about Aldeyra Therapeutics' valuation and earnings. Short Interest3.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted12.91% 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 6.26.Change versus previous monthShort interest in Aldeyra Therapeutics has recently decreased by 13.64%, indicating that investor sentiment is improving significantly. 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 Media1.3 / 5News Sentiment0.00 News Coverage This WeekMarketBeat has tracked 2 news articles for Aldeyra Therapeutics this week, compared to 6 articles on an average week.Search Interest6 people have searched for ALDX on MarketBeat in the last 30 days. This is an increase of 20% compared to the previous 30 days.MarketBeat Follows4 people have added Aldeyra Therapeutics to their MarketBeat watchlist in the last 30 days. This is an increase of 300% compared to the previous 30 days. Company Ownership4.0 / 5Insider TradingAcquiring Shares Net Insider BuyingOver the last three months, insiders have purchased a net $417,500.00 in company stock, which represents 0.3249% of the company's market cap.Insider Buying vs. Insider SellingIn the past three months, Aldeyra Therapeutics insiders have bought more of their company's stock than they have sold. Specifically, they have bought $417,500.00 in company stock and sold $0.00 in 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. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. ALDX Stock News HeadlinesLevicept Appoints Darlene Deptula-Hicks as CFOJuly 7 at 4:00 AM | globenewswire.comAldeyra Therapeutics Eyes FDA Feedback as Dry Eye Drug Faces Make-or-Break MomentJuly 6 at 12:57 AM | theglobeandmail.comTicker Revealed: Pre-IPO Access to "Next Elon Musk" CompanyWe’ve found The Next Elon Musk… and what we believe to be the next Tesla. It’s already racked up $26 billion in government contracts. Peter Thiel just bet $1 Billion on it.July 9 at 1:00 AM | Banyan Hill Publishing (Ad)CEO, President & Director of Aldeyra Therapeutics Picks Up 18% More StockJune 10, 2026 | finance.yahoo.comAldeyra Therapeutics Appoints Darlene Deptula-Hicks to Board of DirectorsJune 9, 2026 | businesswire.com3 Promising Penny Stocks With Market Caps Reaching $300MJune 4, 2026 | finance.yahoo.comAldeyra Therapeutics to Participate in the 2026 Jefferies Global Healthcare ConferenceJune 2, 2026 | businesswire.comALDX Investors Have Opportunity to Lead Aldeyra Therapeutics, Inc. Securities Fraud Lawsuit with the Schall Law FirmMay 29, 2026 | businesswire.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 stock has decreased by 58.9% and is now trading at $2.13. How were Aldeyra Therapeutics' earnings last quarter? Aldeyra Therapeutics, Inc. (NASDAQ:ALDX) issued its earnings results on Thursday, May, 7th. The biotechnology company reported ($0.06) earnings per share (EPS) for the quarter, topping analysts' consensus estimates of ($0.13) by $0.07. 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. 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 NVIDIA (NVDA), Advanced Micro Devices (AMD), Meta Platforms (META), Tesla (TSLA), Viking Therapeutics (VKTX), Alibaba Group (BABA) and Netflix (NFLX). Company Calendar Last Earnings5/07/2026Today7/09/2026Next Earnings (Estimated)8/06/2026Fiscal 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. Green Zone (1w+) 1-Year History Jul 25 Oct 25 Jan 26 Apr 26 Jul 26 For the last 9 days, ALDX's financial health has been in the Green zone, according to TradeSmith. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - DRUGS Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:ALDX CIK1341235 Webwww.ampliphibio.com Phone781-761-4904Fax781-270-0630Employees10Year Founded2004Price Target and Rating Average Price Target for Aldeyra Therapeutics$5.50 High Price Target$9.00 Low Price Target$2.00 Potential Upside/Downside+158.2%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage4 Analysts Profitability EPS (Trailing Twelve Months)($0.46) 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-57.34% Return on Assets-36.33% Debt Debt-to-Equity RatioN/A Current Ratio2.72 Quick Ratio2.72 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.74 per share Price / Book2.88Miscellaneous Outstanding Shares60,320,000Free Float53,203,000Market Cap$128.48 million OptionableOptionable Beta1.16 Social Links The Best Nuclear Energy Stocks to BuyNuclear energy is entering a new growth cycle as rising power demand, expanding data centers, and renewed policy support bring the sector back into focus. 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