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NASDAQ:ALDX

Aldeyra Therapeutics (ALDX) Stock Price, News & Analysis

Aldeyra Therapeutics logo
$0.63 -0.02 (-3.27%)
Closing price 11/12/2026 04:00 PM Eastern
Extended 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.

About Aldeyra Therapeutics Stock (NASDAQ:ALDX)

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Key Stats

Today's Range
$0.60
▼
$0.66
50-Day Range
$0.56
▼
$1.54
52-Week Range
$0.53
▼
$5.93
Volume
569,299 shs
Average Volume
900,617 shs
Market Capitalization
$38.03 million
P/E Ratio
N/A
Dividend Yield
N/A
Price Target
$2.00
Consensus Rating
Hold

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.

Aldeyra Therapeutics Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
62nd Percentile Overall Score

ALDX MarketRank™: 
3.076419785395 of 5 stars

Aldeyra 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.

  • Consensus Rating

    Aldeyra 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 Potential

    Aldeyra Therapeutics has a consensus price target of $2.00, representing about 217.4% upside from its current price of $0.63.

  • Amount of Analyst Coverage

    Aldeyra 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 Growth

    Earnings 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 Ratio

    Aldeyra 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.

  • Percentage of Shares Shorted

    5.94% of the float of Aldeyra Therapeutics has been sold short.
  • Short Interest Ratio / Days to Cover

    Aldeyra 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 month

    Short interest in Aldeyra Therapeutics has recently decreased by 0.84%, indicating that investor sentiment is improving.
  • Dividend Yield

    Aldeyra Therapeutics does not currently pay a dividend.

  • Dividend Growth

    Aldeyra Therapeutics does not have a long track record of dividend growth.

  • News Sentiment

    Aldeyra 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 Week

    MarketBeat has tracked 9 news articles for Aldeyra Therapeutics this week, compared to 6 articles on an average week.
  • MarketBeat Follows

    1 people have added Aldeyra Therapeutics to their MarketBeat watchlist in the last 30 days.
  • Insider Buying vs. Insider Selling

    In the past three months, Aldeyra Therapeutics insiders have not sold or bought any company stock.

  • Percentage Held by Insiders

    11.80% 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 Institutions

    59.71% 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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ALDX Stock News Headlines

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ALDX Stock Analysis - Frequently Asked Questions

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.

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.

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.

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
.

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.

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 Earnings
11/05/2026
Today
11/12/2026
Fiscal Year End
12/31/2026

Industry, Sector and Symbol

Stock Exchange
NASDAQ
Industry
Pharmaceuticals
Sub-Industry
Pharmaceuticals
Current Symbol
NASDAQ:ALDX
CIK
1341235
Employees
6
Year Founded
2004

Price Target and Rating

High Price Target
$2.00
Low Price Target
$2.00
Potential Upside/Downside
+217.4%
Consensus Rating
Hold
Rating Score (0-4)
2.00
Research Coverage
3 Analysts

Profitability

EPS (Trailing Twelve Months)
($0.32)
Trailing P/E Ratio
N/A
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
-$33.85 million
Net Margins
N/A
Pretax Margin
N/A
Return on Equity
-47.97%
Return on Assets
-33.34%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
5.45
Quick Ratio
5.45

Sales & Book Value

Annual Sales
N/A
Price / Sales
N/A
Cash Flow
N/A
Price / Cash Flow
N/A
Book Value
$0.58 per share
Price / Book
1.09

Miscellaneous

Outstanding Shares
60,360,000
Free Float
53,235,000
Market Cap
$38.03 million
Optionable
Optionable
Beta
1.32

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This page (NASDAQ:ALDX) was last updated on 11/12/2026 by MarketBeat.com Staff.
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