Aldeyra Therapeutics Inc Share Price

NASDAQ: ALDX

Small Cap

$4.89

-0.07

(-1.31%)

as on September 18, 2025 at 1:29 am IST

$₹

Aldeyra Therapeutics Inc Stock Performance

as on September 18, 2025 at 1:29 am IST

Day's Low
Day's High
$4.88
Day's Price Range
$5.11
$4.89
0.20%
Downside
4.50%
Upside
52 Week's Low
52 Week's High
$1.14
52-Week Price Range
$7.2
$4.89
76.69%
Downside
47.24%
Upside

Aldeyra Therapeutics Inc share price movements today

Previous Close: $4.96
Open: $4.96
Volume: 923.6K
Day's Low - High: $4.88 - $5.11
52 Week Low - High: $1.14 - $7.2

Aldeyra Therapeutics Inc Historical Returns

1 Month Return: -7.98 %
3 Month Return: + 60.52 %
1 Year Return: -14.19 %
3 Year Return: -21.14 %
5 Year Return: -30.24 %

Aldeyra Therapeutics Inc Stock Fundamentals & Key Indicators

Check Aldeyra Therapeutics Inc market cap, PE, PB, PEG ratios, dividend yield, and other key fundamental indicators.

Market Cap

$323.6M

EPS (TTM)

-0.66

Dividend Yield

0.00%

Quarterly Earnings Growth YOY

0.00%

PE Ratio (TTM)

P/B Ratio

PEG Ratio

EBITDA

-53.1M

Revenue (TTM)

Profit Margin

0.00%

Return On Equity TTM

1251093000.00%

Aldeyra Therapeutics Inc vs Peer Comparison

Compare market cap, revenue, PE, and other key metrics of Aldeyra Therapeutics Inc with its industry peers.

Company	Analyst View	Market Cap	5 Years Return %	PE Ratio	Profit Margin %
Aldeyra Therapeutics Inc	BUY	$323.6M	-30.24%	NA	0.00%
Alnylam Pharmaceuticals, Inc.	BUY	$60.5B	252.04%	-505.15	-12.96%
Beone Medicines Ltd	NA	$39.0B	NA	NA	-3.89%
Vertex Pharmaceuticals Incorporated	BUY	$100.3B	44.17%	27.85	31.86%
Regeneron Pharmaceuticals, Inc.	BUY	$59.6B	1.78%	14.1	31.37%

Stock Returns calculator for Aldeyra Therapeutics Inc Stock including INR - Dollar returns

The Aldeyra Therapeutics Inc stock calculator helps Indian investors calculate returns based on the historical performance of the stock. Just choose your investment amount and duration to get insights and invest more confidently. See stock returns as well as the effect of dollar appreciation over different durations.

*Dollar Return is the profit earned when the US dollar rises in value compared to the Indian rupee.

Investment Value

₹1,00,000

Aldeyra Therapeutics Inc investment value today

Current value as on today

₹89,200

Returns

₹10,800

(-10.8%)

Returns from Aldeyra Therapeutics Inc Stock

₹15,398 (-15.4%)

Dollar Returns*

₹4,598 (+4.6%)

Analyst Recommendation on Aldeyra Therapeutics Inc Stock

Based on 14 analysts

BUY

92.86%

Buy

7.14%

Hold

0.00%

Sell

Based on 14 analysts, 92.86% of analysts recommend a 'BUY' rating for Aldeyra Therapeutics Inc. Average target price of $9.5

Aldeyra Therapeutics Inc Share Price Target

Get share price movements and forecasts by analysts on Aldeyra Therapeutics Inc.

What analysts predicted

48.53%UPSIDE

Target Price

$9.5

Current Price

$4.89

Analyzed by

14 Analysts

Target

$9.50

Aldeyra Therapeutics Inc target price $9.5, a slight upside of 48.53% compared to current price of $4.89. According to 14 analysts rating.

Aldeyra Therapeutics Inc Stock's Interest Amongst Investors

Search interest for Aldeyra Therapeutics Inc Stock has decreased by -62% in the last 30 days, reflecting a downward trend in search activity.

Time period: August 19, 2025 to September 18, 2025

Change:-62% versus previous 30 day period

Aldeyra Therapeutics Inc Quarterly Profit & Loss

All numbers in Millions USD

	Mar 2023	Jun 2023	Sep 2023	Dec 2023	Mar 2024	Jun 2024	Sep 2024	Dec 2024	Mar 2025	Jun 2025
Total Revenue	-	-	-	0	-	-	-	0	-	-
Gross Profit	0	0	0	0	0	0	0	0	0	0
Operating Income	-16	-10	-9	-6	-9	-18	-16	-16	-10	-10
EBITDA	-15	-8	-7	-4	-7	-16	-14	-15	-9	-9
Interest Expense	0	0	0	0	0	0	0	0	0	0
Depreciation	0	0	0	0	0	0	0	0	0	0
Income Before Tax	-15	-8	-8	-4	-8	-16	-15	-15	-9	-9
Income Tax Expense	0	1	1	-3	0	0	-	0	-	-
Net Income	-14	-8	-8	-4	-8	-16	-15	-15	-9	-9
Net Profit Margin	0.00%	0.00%	0.00%	-1210.59%	0.00%	0.00%	0.00%	-6465.16%	0.00%	0.00%

Aldeyra Therapeutics Inc Annual Profit & Loss

All numbers in Millions USD

	Dec 2015	Dec 2016	Dec 2017	Dec 2018	Dec 2019	Dec 2020	Dec 2021	Dec 2022	Dec 2023	Dec 2024
Total Revenue	-	-	-	-	-	-	-	-	-	-
Gross Profit	0	0	0	0	0	0	0	0	0	0
Operating Income	-11	-18	-22	-39	-63	-36	-56	-62	-42	-60
EBITDA	-11	-18	-22	-38	-61	-36	-55	-60	-35	-53
Interest Expense	0	0	0	0	0	1	1	1	2	1
Depreciation	-	-	0	0	0	0	0	0	0	0
Income Before Tax	-12	-18	-22	-38	-62	-38	-57	-62	-37	-55
Income Tax Expense	0	0	0	0	-1	0	1	0	-	-55,851,444
Net Income	-12	-18	-22	-38	-60	-37	-57	-62	-37	-55
Net Profit Margin	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Aldeyra Therapeutics Inc Quarterly Cash Flow

All numbers in Millions USD

	Jun 2023	Sep 2023	Dec 2023	Mar 2024	Jun 2024	Sep 2024	Dec 2024	Mar 2025	Jun 2025
Net Income	-8	-8	-4	-8	-16	-15	-15	-9	-9
Operating Cash Flow	-13	-8	0	-9	-13	-7	-12	-12	-8
Investing Cash Flow	-	-	-	-30	-18	5	-1	7	0
Financing Cash Flow	0	0	-1	0	-	0	0	1	1,002,808
Change in Cash	-13	-8	0	-90	-21	-2	-13	-4	-9

Aldeyra Therapeutics Inc Annual Cash Flow

All numbers in Millions USD

	Dec 2016	Dec 2017	Dec 2018	Dec 2019	Dec 2020	Dec 2021	Dec 2022	Dec 2023	Dec 2024
Net Income	-18	-22	-38	-60	-37	-57	-62	-37	-55
Operating Cash Flow	-15	-19	-29	-44	-37	-42	-56	-30	-43
Investing Cash Flow	0	-10	-23	18	29	0	-29	30	-44
Financing Cash Flow	12	37	80	23	41	194	1	-1	0
Change in Cash	-2	8	27	-2	33	151	-85	-1	-88

Global Institutional Holdings in Aldeyra Therapeutics Inc

Funds	Holdings
Perceptive Advisors LLC	15.49%
Knoll Capital Management LP	9.14%
BlackRock Inc	6.24%
Vanguard Group Inc	6.21%
Ardsley Advisory Partners	2.92%

See all

Insights on Aldeyra Therapeutics Inc

Insights help you understand the recent movement of the company's critical parameters, giving you an overall view of the company.

NO EFFECT
Against Peers
In the last 1 year, Alnylam Pharmaceuticals, Inc. has given 68.1% return, outperforming this stock by 82.3%
NO EFFECT
Against Peers
In the last 3 years, Alnylam Pharmaceuticals, Inc. has given 116.5% return, outperforming this stock by 137.6%
NEGATIVE IMPACT
Price Dip
In the last 7 days, ALDX stock has moved down by -10.5%

About Aldeyra Therapeutics Inc

dedicated to improving lives by developing products that treat aldehyde-mediated diseases. we are a biotechnology company focused primarily on the development of new products for inflammation, inborn errors of metabolism, and other diseases that are thought to be related to endogenously generated toxic and pro-inflammatory chemical species known as aldehydes. we are developing adx-102 (formerly ns2), as well as other novel product candidates that are designed specifically to sequester aldehydes, for the treatment of: • noninfectious anterior uveitis, a rare severe inflammatory eye disease that can lead to blindness; • allergic conjunctivitis, a common disease that affects more than 20% of the population worldwide, and related rare allergic ocular diseases that are characterized by inflammation of the conjunctiva (a membrane covering part of the front of the eye), resulting in ocular itching, excessive tear production, swelling, and redness; • dry eye disease, a common inflammatory dise

Organisation	Aldeyra Therapeutics Inc
Headquarters	131 Hartwell Avenue, Lexington, MA, United States, 02421
Industry	Health Technology
CEO	Dr. Todd C. Brady M.D., Ph.D.
E-voting on shares	Click here to vote

Key Management of Aldeyra Therapeutics Inc

Name	Title
Laura Nichols	Operations Manager
Dr. Todd C. Brady M.D., Ph.D.	CEO, President & Director
Mr. Michael Alfieri	Head of Finance and Principal Financial & Accounting Officer
Dr. Stephen G. Machatha Ph.D.	Chief Development Officer
David Burke	Head of Investor Relations

FAQs

What is Aldeyra Therapeutics Inc share price today?

Aldeyra Therapeutics Inc share price today is $4.89 as on September 18, 2025 at 1:29 am IST at the close of the market. Aldeyra Therapeutics Inc share today touched a day high of $5.11 and a low of $4.88.

What is the 52 week high and 52 week low for Aldeyra Therapeutics Inc share?

Aldeyra Therapeutics Inc share touched a 52 week high of $7.2 on March 12, 2025 and a 52 week low of $1.14 on April 3, 2025. Aldeyra Therapeutics Inc stock price today i.e. September 18, 2025 at 1:29 am IST is closed at $4.89,which is 32.08% down from its 52 week high and 328.95% up from its 52 week low.

What is Aldeyra Therapeutics Inc's market capitalisation today?

Aldeyra Therapeutics Inc market capitalisation is $0.00T as on September 18, 2025 at 1:29 am IST.

How to invest in Aldeyra Therapeutics Inc Stock (ALDX) from India?

Step 1: Open a free US stocks account on INDmoney App and transfer your Rupees into Dollars to your INDmoney US stocks account. For a step by step instruction, check How to Transfer Money to Your US Stocks Account .
Step 2: Search for Aldeyra Therapeutics Inc on INDmoney app. Click on Buy button. You can invest as low as $1.5 in Aldeyra Therapeutics Inc Shares that will get you 0.3067 shares as per Aldeyra Therapeutics Inc share price of $4.89 per share as on September 18, 2025 at 1:29 am IST.

What is the minimum amount required to buy Aldeyra Therapeutics Inc Stock (ALDX) from India?

Indian investors can start investing in Aldeyra Therapeutics Inc (ALDX) shares with as little as ₹87.816 or $1 (as of September 18, 2025 at 1:44 am IST) using the INDmoney app.
For example: If you want to invest $10 or ₹878.16 in Aldeyra Therapeutics Inc stock (as per the Rupee-Dollar exchange rate as on September 18, 2025 at 1:44 am IST). Based on Aldeyra Therapeutics Inc share’s latest price of $4.89 as on September 18, 2025 at 1:29 am IST, you will get 2.0450 shares of Aldeyra Therapeutics Inc. Learn more about fractional shares .

What are the returns that Aldeyra Therapeutics Inc has given to Indian investors in the last 5 years?

Aldeyra Therapeutics Inc stock has given -30.24% share price returns and 20.01% dollar appreciation to an Indian investor in the last 5 years.
Read more about How do Currency Exchange Rates impact your returns on US Stock Investments?