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ALDX Overview

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0.000(0.000%)
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ET
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0.000
0.000(0.000%)
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0.000(0.000%)Aft-market
ET
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Intellectia

Loading chart...

High
1.780
Open
1.760
VWAP
1.71
Vol
1.90M
Mkt Cap
101.11M
Low
1.680
Amount
3.26M
EV/EBITDA(TTM)
--
Total Shares
60.18M
EV
46.31M
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
02:47 AMGlobenewswire
Class Action Lawsuit Filed Against Aldeyra Therapeutics
  • Class Action Initiated: Rosen Law Firm has filed a class action lawsuit on behalf of investors who purchased Aldeyra Therapeutics (NASDAQ: ALDX) securities between November 3, 2023, and March 16, 2026, alleging that the company made false and misleading statements during this period, resulting in investor losses.
  • Compensation Mechanism: Investors participating in the lawsuit may be entitled to compensation without any out-of-pocket costs, indicating a risk-free legal avenue for victims and potentially attracting more investors to seek justice.
  • Law Firm Background: Rosen Law Firm is renowned for its successful track record in securities class actions, having recovered over $438 million for investors in 2019 alone, showcasing its strength and experience in handling similar cases.
  • Case Details Revealed: The lawsuit claims that Aldeyra's drug candidate reproxalap had inconsistent clinical trial results, rendering the company's statements about its business prospects materially false and misleading, which could have long-term implications for investor confidence.
Globenewswire
7.0
03-29Globenewswire
Aldeyra Therapeutics Faces Securities Investigation
  • Investigation Launched: Rosen Law Firm has announced an investigation into Aldeyra Therapeutics (NASDAQ: ALDX) for potential securities claims due to allegations of issuing materially misleading business information, which has negatively impacted investor confidence.
  • Stock Price Plunge: On March 17, 2026, Aldeyra's stock price fell by $2.99, or 70.7%, closing at $1.24 per share after receiving a Complete Response Letter (CRL) from the FDA, indicating serious concerns about the efficacy of its new drug application.
  • Class Action Preparation: The Rosen Law Firm is preparing a class action to seek recovery for investor losses, allowing investors to participate without any upfront fees, highlighting the firm's commitment to protecting investor rights.
  • Law Firm's Credentials: Rosen Law Firm is renowned for its successful track record in securities class actions, having recovered over $438 million for investors in 2019 alone, demonstrating its expertise and resource advantages in handling such cases.
PRnewswire
7.0
03-26PRnewswire
Rosen Law Firm Investigates Aldeyra Securities Claims
  • Securities Claims Investigation: Rosen Law Firm announces an investigation into Aldeyra Therapeutics, Inc. for potentially issuing materially misleading business information, which may have adversely affected investor decisions.
  • FDA Response Letter: In a report filed with the SEC on March 17, 2026, Aldeyra disclosed that the FDA's Complete Response Letter indicated a lack of substantial evidence to support the efficacy of its drug for dry eye disease, undermining investor confidence.
  • Stock Price Plunge: Following this news, Aldeyra's stock price plummeted by $2.99, a staggering 70.7% drop, closing at $1.24 per share, reflecting extreme market pessimism regarding its future prospects.
  • Class Action Preparation: Rosen Law Firm is preparing a class action to seek recovery for investor losses, allowing investors to participate in claims without upfront costs, highlighting the firm's commitment to protecting investor rights.
Globenewswire
7.0
03-26Globenewswire
Investigation into Aldeyra Therapeutics Securities Claims
  • Securities Claims Investigation: Rosen Law Firm has announced an investigation into potential securities claims on behalf of Aldeyra Therapeutics (NASDAQ: ALDX) shareholders due to allegations of materially misleading business information, which could undermine investor confidence.
  • FDA Response Letter Impact: On March 17, 2026, Aldeyra received a Complete Response Letter from the FDA indicating that its New Drug Application lacked sufficient evidence of efficacy, resulting in a staggering 70.7% drop in stock price to $1.24 per share on the same day, leading to significant investor losses.
  • Class Action Preparation: The Rosen Law Firm is preparing a class action to seek recovery for investors' losses, allowing participation without upfront fees, which underscores the firm's commitment to protecting investor rights.
  • Law Firm Background: Rosen Law Firm specializes in securities class actions and has recovered over $438 million for investors in 2019 alone, highlighting its successful track record and extensive experience in the securities litigation field.
NASDAQ.COM
5.0
03-23NASDAQ.COM
Insider Purchases at Greene County Bancorp and Aldeyra Therapeutics
  • GCBC Insider Purchase: Tejraj S. Hada, a director at Greene County Bancorp, purchased 6,000 shares of GCBC at $21.96 each for a total of $131,780, achieving approximately 7.6% gains at the peak of the trading session, indicating strong confidence in the company's future performance.
  • Historical Buying Record: Over the past year, Hada has made six purchases of GCBC, totaling $296,434 at an average cost of $22.55 per share, demonstrating his sustained optimism and recognition of the company's long-term value.
  • Aldeyra Therapeutics Purchase: Richard Douglas bought 70,000 shares of Aldeyra Therapeutics at $1.40 each for a total of $98,000, marking his first purchase in the past twelve months, reflecting confidence in the company's future potential.
  • Market Performance Review: On Monday, Greene County Bancorp's stock rose about 1.8%, while Aldeyra Therapeutics surged 21%, with Douglas's investment yielding approximately 61.4% gains at the day's peak, showcasing positive market sentiment towards both companies.
Globenewswire
7.0
03-22Globenewswire
Aldeyra Therapeutics Faces Securities Investigation Over Misleading Information
  • Investigation Launched: Rosen Law Firm has announced an investigation into Aldeyra Therapeutics (NASDAQ: ALDX) for potentially issuing materially misleading business information, which may expose shareholders to significant losses.
  • Stock Price Plunge: On March 17, 2026, Aldeyra's stock price fell by $2.99, or 70.7%, closing at $1.24 per share after receiving a Complete Response Letter (CRL) from the FDA, indicating serious concerns about the efficacy of its new drug application.
  • Class Action Preparation: Rosen Law Firm is preparing a class action to seek recovery for investors' losses, allowing participation without any out-of-pocket fees, demonstrating the firm's commitment to protecting investor rights.
  • Firm's Track Record: Rosen Law Firm is renowned for its success in securities class actions, having recovered over $438 million for investors in 2019 alone, highlighting its extensive experience and resources in handling similar cases.
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.
BTIG
Thomas Shrader
Strong Buy
Maintains
$11 → $9
2025-04-07
Reason
BTIG
Thomas Shrader
Price Target
$11 → $9
2025-04-07
Maintains
Strong Buy
Reason

Valuation Metrics

The current forward P/E ratio for Aldeyra Therapeutics Inc (ALDX.O) is -8.87, compared to its 5-year average forward P/E of -15.08. 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
-15.08
Current PE
-8.87
Overvalued PE
15.81
Undervalued PE
-45.97

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
-3.70
Current EV/EBITDA
0.00
Overvalued EV/EBITDA
-0.54
Undervalued EV/EBITDA
-6.87

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
22.29
Current PS
9.61
Overvalued PS
62.32
Undervalued PS
-17.74

Financials

AI Analysis
Annual
Quarterly

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Whales Holding ALDX

P
Perceptive Advisors LLC
Holding
ALDX
-0.51%
3M Return

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Frequently Asked Questions

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

The current price of ALDX is 1.68 USD — it has decreased -5.08

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 March 31 2026.

What is Aldeyra Therapeutics Inc (ALDX) market cap?

Today ALDX has the market capitalization of 101.11M USD.