Positive News SentimentPositive NewsNASDAQ:ALDX Aldeyra Therapeutics (ALDX) Stock Price, News & Analysis $1.36 -0.02 (-1.45%) Closing price 04:00 PM EasternExtended Trading$1.42 +0.06 (+4.34%) As of 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$1.35▼$1.4050-Day Range$1.34▼$2.0752-Week Range$1.07▼$5.93Volume366,921 shsAverage Volume1.78 million shsMarket Capitalization$82.04 millionP/E RatioN/ADividend YieldN/APrice Target$5.50Consensus 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 mediators that can contribute to tissue damage and disease progression. Aldeyra’s lead investigational product is reproxalap, a small-molecule RASP inhibitor being developed for ocular conditions, including dry eye disease and allergic conjunctivitis. The company has also developed ADX-2191, an investigational intravitreal formulation of methotrexate intended for the treatment of certain rare retinal diseases, including proliferative vitreoretinopathy and retinitis pigmentosa. Founded in 2008 and headquartered in Lexington, Massachusetts, Aldeyra conducts its research and clinical development activities primarily in the United States. The company is led by Todd C. Brady, M.D., Ph.D., who has served as its president and chief executive officer and is among its founders.AI Generated. May Contain Errors. Read More Aldeyra Therapeutics Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks54th Percentile Overall ScoreALDX MarketRank™: Aldeyra Therapeutics scored higher than 54% of companies evaluated by MarketBeat, and ranked 443rd out of 905 stocks in the healthcare 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, 1 hold rating, and 1 sell rating.Upside PotentialAldeyra Therapeutics has a consensus price target of $5.50, representing about 304.4% upside from its current price of $1.36.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 ($0.39) to ($0.16) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Aldeyra Therapeutics is -3.49, 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 -3.49, 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 1.84. 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 Shorted5.87% 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 4.75.Change versus previous monthShort interest in Aldeyra Therapeutics has recently decreased by 6.11%, 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 Media3.7 / 5News SentimentN/A News SentimentAldeyra Therapeutics has a news sentiment score of 1.87. 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 0.80 average news sentiment score of Healthcare companies.Search InterestOnly 1 people have searched for ALDX on MarketBeat in the last 30 days. This is a decrease of -67% compared to the previous 30 days.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. 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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 HeadlinesAldeyra Therapeutics: What Comes Next After Reproxalap's Third CRLJuly 10, 2026 | seekingalpha.comLevicept Appoints Darlene Deptula-Hicks as CFOJuly 7, 2026 | globenewswire.comThe trade I’ve been waiting for since 2011Ross Givens, Director of Research at Traders Agency, is calling for gold to reach $10,000 an ounce this supercycle - and says that may be conservative. Billionaire Pierre Lassonde has argued for $19,000. Former CIA advisor Jim Rickards targets $27,000 based on a federal revaluation of the gold supply. But the bigger opportunity may not be gold itself. A 'backdoor' gold-linked asset has historically multiplied gold's move by 10x or more - returning 846%, 1,668%, 1,847%, and 1,915% in the last supercycle.September 18 at 1:00 AM | Traders Agency (Ad)Aldeyra Therapeutics Eyes FDA Feedback as Dry Eye Drug Faces Make-or-Break MomentJuly 6, 2026 | theglobeandmail.comCEO, 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.comSee More Headlines ALDX Stock Analysis - Frequently Asked Questions How have ALDX shares performed this year? Aldeyra Therapeutics' stock was trading at $5.18 at the beginning of the year. Since then, ALDX shares have decreased by 73.7% and is now trading at $1.36. How were Aldeyra Therapeutics' earnings last quarter? Aldeyra Therapeutics, Inc. (NASDAQ:ALDX) posted its earnings results on Thursday, August, 6th. The biotechnology company reported ($0.09) earnings per share for the quarter, missing the consensus estimate of ($0.09) by $0.00. When did Aldeyra Therapeutics IPO? Aldeyra Therapeutics (ALDX) raised $16 million in an initial public offering (IPO) on Friday, April 11th 2014. The company issued 1,500,000 shares at $10.00-$12.00 per share. Who are Aldeyra Therapeutics' major shareholders? Aldeyra Therapeutics' top institutional shareholders include BlackRock Inc. (2.08%), GSA Capital Partners LLP (0.78%), Ieq Capital LLC (0.34%) and Palo Alto Investors LP (0.26%). 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 NVIDIA (NVDA), Advanced Micro Devices (AMD), Meta Platforms (META), Tesla (TSLA), Viking Therapeutics (VKTX), Alibaba Group (BABA) and Netflix (NFLX). Company Calendar Last Earnings8/06/2026Today9/18/2026Next Earnings (Estimated)11/04/2026Fiscal 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. Yellow Zone (1w+) 1-Year History Sep 25 Dec 25 Mar 26 Jun 26 Sep 26 For the last 9 days, ALDX's financial health has been in the Yellow zone, according to TradeSmith. 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$5.50 High Price Target$9.00 Low Price Target$2.00 Potential Upside/Downside+304.4%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage3 Analysts Profitability EPS (Trailing Twelve Months)($0.39) 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-53.14% Return on Assets-34.94% Debt Debt-to-Equity RatioN/A Current Ratio4.91 Quick Ratio4.91 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.74 per share Price / Book1.84Miscellaneous Outstanding Shares60,326,000Free Float53,208,000Market Cap$82.04 million OptionableOptionable Beta1.20 Social Links 7 Stocks That Will Be Magnificent in 2026Discover the next wave of investment opportunities with our report, 7 Stocks That Will Be Magnificent in 2026. 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