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ALDX Overview

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ET
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Intellectia

Loading chart...

High
1.860
Open
1.810
VWAP
1.82
Vol
1.30M
Mkt Cap
108.33M
Low
1.790
Amount
2.37M
EV/EBITDA(TTM)
--
Total Shares
60.18M
EV
53.54M
EV/OCF(TTM)
--
P/S(TTM)
--
Aldeyra Therapeutics, Inc. is a biotechnology company focused on discovering therapies designed to treat immune-mediated and metabolic diseases. The Company's approach is to develop pharmaceuticals that modulate protein systems, instead of directly inhibiting or activating single protein targets, with the goal of optimizing multiple pathways at once while minimizing toxicity. Its product candidates include reactive aldehyde species (RASP) modulators ADX-629, ADX 248, ADX-743, ADX-631, ADX-246, and chemically related molecules for the potential treatment of systemic and retinal immune-mediated and metabolic diseases. Its late-stage product candidates are reproxalap, a RASP modulator for the potential treatment of dry eye disease and allergic conjunctivitis, and ADX-2191, a novel formulation of intravitreal methotrexate for the potential treatment of retinitis pigmentosa. ADX 629 is in Phase II clinical trials for moderate alcohol-associated hepatitis and Sjogren-Larsson Syndrome.
Show More

Events Timeline

(ET)
2026-03-17
09:10:00
Aldeyra Receives Complete Response Letter from FDA, reproxalap NDA Rejected
select
2025-12-16 (ET)
2025-12-16
16:20:00
Major US Averages Mixed as Unemployment Rate Rises to 4.6%
select
2025-12-16
12:00:00
Major Averages Broadly Lower as Traders Eye Jobs Report
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2025-12-15 (ET)
2025-12-15
20:10:00
Aldeyra Therapeutics FDA Extends Reproxalap Target Action Date to March 16, 2026
select
2025-11-13 (ET)
2025-11-13
07:40:11
Aldeyra Enhances RASP Platform
select
2025-10-28 (ET)
2025-10-28
08:02:24
Aldeyra's ADX-629 Shows Notable Enhancement in Liver Function Results
select

News

Globenewswire
7.0
04-19Globenewswire
Class Action Lawsuit Filed Against Aldeyra Therapeutics
  • Lawsuit Background: Bronstein, Gewirtz & Grossman, LLC has initiated a class action lawsuit against Aldeyra Therapeutics and certain executives, seeking damages for investors who purchased securities between November 3, 2023, and March 16, 2026, reflecting strong investor concerns over potential fraud.
  • Allegations Details: The complaint alleges that defendants made false or misleading statements during the class period and failed to disclose inconsistencies in clinical trial results for the drug candidate reproxalap, leading to misjudgments about the company's prospects and impacting stock price stability.
  • Investor Actions: Affected investors are encouraged to apply to be lead plaintiffs by May 29, 2026, to share in any potential recovery, indicating active participation and advocacy for their rights within the legal process.
  • Legal Fee Arrangement: Bronstein, Gewirtz & Grossman, LLC will represent investors on a contingency fee basis, meaning they will only charge fees if they successfully recover damages, thus reducing financial risk for investors and encouraging more victims to join the lawsuit.
Globenewswire
7.0
04-18Globenewswire
Reminder of Aldeyra Securities Class Action
  • Class Action Notice: Rosen Law Firm reminds investors who purchased Aldeyra Therapeutics (NASDAQ: ALDX) securities between November 3, 2023, and March 16, 2026, to apply as lead plaintiffs by May 29, 2026, to potentially receive compensation without any out-of-pocket costs.
  • Lawsuit Background: The lawsuit alleges that Aldeyra made false and misleading statements regarding the inconsistent results of its drug candidate reproxalap's clinical trials, which led to investor losses when the true details emerged, negatively impacting the company's reputation and market confidence.
  • Law Firm Credentials: Rosen Law Firm specializes in securities class actions and has recovered over $438 million for investors in 2019 alone, being ranked first by ISS Securities Class Action Services in 2017, showcasing its successful track record and expertise in this field.
  • Investor Guidance: Investors are advised to carefully select qualified counsel with a proven track record, avoiding firms that act merely as intermediaries, to ensure effective legal representation and support in the class action.
Globenewswire
7.0
04-18Globenewswire
Aldeyra Therapeutics Faces Securities Fraud Class Action Lawsuit
  • Lawsuit Background: Aldeyra Therapeutics is facing a securities fraud class action lawsuit for failing to disclose inconsistent results from its drug candidate reproxalap clinical trials, affecting investors from November 3, 2023, to March 16, 2026, highlighting significant transparency issues within the company.
  • FDA Response: On March 17, 2026, Aldeyra received a Complete Response Letter from the FDA indicating a lack of substantial evidence supporting the drug's efficacy in treating dry eye disease, leading to a substantial decline in investor confidence regarding the company's future prospects.
  • Stock Price Plunge: Following the lawsuit announcement, Aldeyra's stock price plummeted from $4.23 on March 16, 2026, to $1.24, representing a 71% drop, reflecting serious market concerns over the company's potential legal risks and product effectiveness.
  • Investor Action: Affected investors must apply for lead plaintiff status by May 29, 2026, to represent the class in the lawsuit, emphasizing the importance of timely action to protect their rights and interests.
Globenewswire
7.0
04-17Globenewswire
Aldeyra Therapeutics Securities Fraud Class Action Reminder
  • Lawsuit Background: A class action lawsuit has been filed on behalf of investors who purchased Aldeyra securities between November 3, 2023, and March 16, 2026, alleging that the company failed to disclose inconsistencies in the clinical trial results of its drug candidate reproxalap, leading to significant investor losses.
  • FDA Response: On March 17, 2026, Aldeyra received a Complete Response Letter from the FDA, indicating a lack of substantial evidence supporting the drug's efficacy in treating dry eye disease, with serious concerns raised about the reliability of the positive findings due to inconsistent trial results.
  • Stock Price Plunge: Following the FDA announcement, Aldeyra's stock price plummeted from $4.23 per share on March 16, 2026, to $1.24, representing a decline of approximately 71%, which has severely impacted investor confidence.
  • Investor Action: Investors are urged to apply for lead plaintiff status by May 29, 2026, to represent other investors in the lawsuit, as failing to submit applications by this deadline will result in the loss of the opportunity to participate in the litigation.
PRnewswire
7.0
04-17PRnewswire
Faruqi & Faruqi Encourages Investors in Aldeyra to Reach Out
  • Legal Investigation: Faruqi & Faruqi LLP is investigating potential claims against Aldeyra Therapeutics, Inc., particularly for investors who purchased securities between November 3, 2023, and March 16, 2026, urging them to seek lead plaintiff status by the May 29, 2026 deadline.
  • FDA Rejection: On March 17, 2026, Aldeyra disclosed that the FDA issued a Complete Response Letter rejecting its NDA for reproxalap due to insufficient evidence of efficacy, causing the stock price to plummet by 70.7% to close at $1.24 per share, indicating severe market skepticism regarding the product's effectiveness.
  • False Statement Allegations: The lawsuit alleges that Aldeyra and its executives violated federal securities laws by making false and/or misleading statements despite inconsistent clinical trial results, leading to investor losses once the true information was revealed, highlighting significant governance and transparency issues within the company.
  • Investor Rights Protection: Faruqi & Faruqi encourages anyone with information regarding Aldeyra's conduct, including whistleblowers and former employees, to contact the firm to provide legal support for affected investors, ensuring their rights are protected.
PRnewswire
7.0
04-16PRnewswire
Class Action Filed Against Aldeyra Therapeutics for Misleading Investors
  • Class Action Initiated: Robbins LLP has reminded all investors who purchased Aldeyra Therapeutics (NASDAQ:ALDX) securities between November 3, 2023, and March 16, 2026, that a class action has been filed, alleging the company misled investors regarding clinical trial results, significantly impacting investment decisions.
  • Inconsistent Clinical Trial Results: The lawsuit claims that Aldeyra failed to disclose the inconsistency of results from its lead drug candidate reproxalap's clinical trials, rendering any positive findings unreliable and severely affecting the company's business outlook.
  • Stock Price Plummet: Following the receipt of a Complete Response Letter from the SEC on March 17, 2026, indicating a lack of substantial evidence for the drug's efficacy, Aldeyra's stock price fell by $2.99, or approximately 70.7%, closing at $1.24 per share, reflecting extreme market pessimism regarding the company's future.
  • Shareholder Action Guidance: Shareholders are advised to submit their papers by May 29, 2026, if they wish to serve as lead plaintiffs in the class action, emphasizing the importance of corporate governance and executive accountability, with the option to remain absent from the case while still being eligible for recovery.
Wall Street analysts forecast ALDX stock price to rise
2 Analyst Rating
Wall Street analysts forecast ALDX stock price to rise
2 Buy
0 Hold
0 Sell
Moderate Buy
Current: 0.000
sliders
Low
9.00
Averages
9.50
High
10.00
Current: 0.000
sliders
Low
9.00
Averages
9.50
High
10.00
H.C. Wainwright
Matthew Caufield
Buy -> Neutral
downgrade
$10 -> $2
AI Analysis
2026-03-18
Reason
H.C. Wainwright
Matthew Caufield
Price Target
$10 -> $2
AI Analysis
2026-03-18
downgrade
Buy -> Neutral
Reason
H.C. Wainwright analyst Matthew Caufield downgraded Aldeyra to Neutral from Buy with a price target of $2, down from $10, after the company received a complete response letter from the FDA related to reproxalap for the topical treatment of the signs and symptoms of dry eye disease. The firm reduced its probability of success for reproxalap from 75% to 40% and downgraded Aldeyra.

Valuation Metrics

The current forward P/E ratio for Aldeyra Therapeutics Inc (ALDX.O) is 0.00, compared to its 5-year average forward P/E of -15.11. For a more detailed relative valuation and DCF analysis to assess Aldeyra Therapeutics Inc's fair value, Click here.

Forward PE

The forward P/E ratio is a valuation metric that divides a company's current stock price by its estimated future earnings per share over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average PE
-15.11
Current PE
0.00
Overvalued PE
15.98
Undervalued PE
-46.19

Forward EV/EBITDA

The forward EV/EBITDA ratio is a valuation metric that divides a company's enterprise value (EV) by its estimated future earnings before interest, taxes, depreciation, and amortization (EBITDA) over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average EV/EBITDA
-3.62
Current EV/EBITDA
0.00
Overvalued EV/EBITDA
-0.54
Undervalued EV/EBITDA
-6.70

Forward PS

The forward P/S ratio is a valuation metric that divides a company's current stock price by its estimated future sales (or revenue) per share over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average PS
21.71
Current PS
3.72
Overvalued PS
60.87
Undervalued PS
-17.45

Financials

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Whales Holding ALDX

P
Perceptive Advisors LLC
Holding
ALDX
+15.99%
3M Return

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Frequently Asked Questions

What is Aldeyra Therapeutics Inc (ALDX) stock price today?

The current price of ALDX is 1.8 USD — it has increased 0

What is Aldeyra Therapeutics Inc (ALDX)'s business?

Aldeyra Therapeutics, Inc. is a biotechnology company focused on discovering therapies designed to treat immune-mediated and metabolic diseases. The Company's approach is to develop pharmaceuticals that modulate protein systems, instead of directly inhibiting or activating single protein targets, with the goal of optimizing multiple pathways at once while minimizing toxicity. Its product candidates include reactive aldehyde species (RASP) modulators ADX-629, ADX 248, ADX-743, ADX-631, ADX-246, and chemically related molecules for the potential treatment of systemic and retinal immune-mediated and metabolic diseases. Its late-stage product candidates are reproxalap, a RASP modulator for the potential treatment of dry eye disease and allergic conjunctivitis, and ADX-2191, a novel formulation of intravitreal methotrexate for the potential treatment of retinitis pigmentosa. ADX 629 is in Phase II clinical trials for moderate alcohol-associated hepatitis and Sjogren-Larsson Syndrome.

What is the price predicton of ALDX Stock?

Wall Street analysts forecast ALDX stock price to rise over the next 12 months. According to Wall Street analysts, the average 1-year price target for ALDX is9.50 USD with a low forecast of 9.00 USD and a high forecast of 10.00 USD. However, analyst price targets are subjective and often lag stock prices, so investors should focus on the objective reasons behind analyst rating changes, which better reflect the company's fundamentals.

What is Aldeyra Therapeutics Inc (ALDX)'s revenue for the last quarter?

Aldeyra Therapeutics Inc revenue for the last quarter amounts to -6.67M USD, decreased -59.78

What is Aldeyra Therapeutics Inc (ALDX)'s earnings per share (EPS) for the last quarter?

Aldeyra Therapeutics Inc. EPS for the last quarter amounts to -5299345.00 USD, decreased -55.97

How many employees does Aldeyra Therapeutics Inc (ALDX). have?

Aldeyra Therapeutics Inc (ALDX) has 8 emplpoyees as of April 20 2026.

What is Aldeyra Therapeutics Inc (ALDX) market cap?

Today ALDX has the market capitalization of 108.33M USD.