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NASDAQ · Biotechnology · USD

Aldeyra Therapeutics, Inc. (ALDX) Stock Analysis

Aldeyra Therapeutics, Inc. (ALDX) is a Biotechnology stock listed on NASDAQ and quoted in US Dollar.

ALDX

$1.48

$0.00 (0.00%)

Sep 4, 2026 · Market close

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Price History

Hover for the daily close. The dotted line marks the period open.

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ALDX Key Statistics

As of Sep 4, 2026
Trading
Open
$1.47
Previous Close
$1.48
Day's Range
1.46–1.49
52-Week Range
1.07–5.93
Volume
483.90K
BetaHow much the share price moves relative to the wider market. 1.0 moves in line with it; above 1.0 swings more, below 1.0 less.
1.19
Valuation
Market Cap
$89.28M
P/E Ratio
unprofitable
EPS (ttm)Profit attributable to each share over the last twelve months.
−0.38
Financials (FY)
Revenue (FY)
$0.00
Net Income (FY)
−$33.85M
Profit marginThe share of revenue left as profit after all costs and taxes.
0.00%
Shares OutstandingThe total number of shares held by all investors. Market value is this figure multiplied by the share price.
60.33M
1-Year Return
−73.24%
Dividend and dates
Earnings Date
November 4, 2026estimated
Avg Volume
1.27M

Only metrics the company reports are shown. Data provided by Yahoo Finance via yfinance. Updated daily.

ALDX Stock Return by Calendar Year

Calendar-year returns computed from daily closing prices. Partial years are shown muted and marked with an asterisk.

YearReturn
2026 (partial year)−71.43%
2025+3.81%
2024+42.17%
2023−49.57%
2022+74.00%
2021−41.69%
2020+18.07%
2019−30.00%
2018+22.06%
2017+27.10%
2016 (partial year)−9.01%

As of September 4, 2026.

ALDX Revenue and Earnings by Fiscal Year

FY ends December
Fiscal yearRevenueNet incomeNet margin
2025$0.00−$33.85M—
2024$0.00−$55.85M—
2023$0.00−$37.54M—
2022$0.00−$62.02M—
Fiscal yearRevenueGross profitOperating incomeNet incomeNet margin
2025$0.00—−$35.27M−$33.85M—
2024$0.00—−$60.12M−$55.85M—
2023$0.00—−$42.79M−$37.54M—
2022$0.00—−$62.68M−$62.02M—

Annual figures as reported, in the company's reporting currency. As of December 31, 2025.

ALDX Valuation vs Biotechnology Median

Median of 656 stocks
MetricALDXBiotechnology medianvs median
Profit margin0.00%0.00%0.0 pts above

Medians across 656 Biotechnology stocks that report the metric. Medians, not averages, so one outlier cannot move them. As of September 4, 2026.

Analysis

Data-derived

Company Overview

The market values Aldeyra Therapeutics, Inc. (ALDX) at $89.28M. It is classified in the Biotechnology industry, within the Healthcare sector. The company reports 6 employees.

The most recent close on file for ALDX is $1.48, dated September 4, 2026. The close was unchanged from the previous session. Over the past 52 weeks the price has ranged from $1.07 to $5.93. The latest close sits 38.32% above that 52-week low.

Financial Health

The most recent full year on file, fiscal 2025, shows revenue of $0.00. The same year closed with a net loss of $33.85M. The reported profit margin is 0%. Earnings per share on a trailing basis come to −0.38.

Across the 4 fiscal years on file, revenue moves from $0.00 in 2022 to $0.00 in 2025. Of those 4 years, 0 report positive net income.

Valuation Assessment

The record shows negative trailing earnings, so no price-to-earnings ratio is published.

The trailing one-year price return is −73.24%. Across 10 years the annualized return works out at −12.09%. The reported beta is 1.19. Daily returns over the trailing 10 years annualize to a volatility of 94.09%.

Growth & Income

No dividend is on file for ALDX.

Across the complete calendar years on file, 2022 returned +74.00% and 2023 returned −49.57%. Of the 9 complete calendar years on file, 6 finished higher. 2026 is still running; the price is −71.43% year to date.

Peer Comparison

Aldeyra Therapeutics, Inc. (ALDX) operates in the Biotechnology industry. Here is how it compares to its closest peers by market capitalization:

Company Ticker Market Cap P/E Ratio
Aldeyra Therapeutics, Inc. ALDX $89.28M —
Vertex Pharmaceuticals Incorporated VRTX $138.42B 32.5
Regeneron Pharmaceuticals, Inc. REGN $85.22B 20.5
argenx SE ARGX $64.25B 40.1

The Biotechnology industry average P/E ratio is 12.6x. Aldeyra Therapeutics, Inc. has no P/E ratio because it is not currently profitable.

Every figure above is read from this page's own data on each nightly rebuild. Informational only, not financial advice. As of September 4, 2026.

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About Aldeyra Therapeutics, Inc.

Aldeyra Therapeutics, Inc., a biotechnology company, discovers and develops therapies designed to treat immune-mediated diseases. Its lead product candidate is reproxalap, a reactive aldehyde species (RASP) modulator, which is in Phase III clinical trial for the treatment of dry eye disease and allergic conjunctivitis; and ADX-2191, a dihydrofolate reductase inhibitor for the treatment of primary vitreoretinal lymphoma and retinitis pigmentosa. The company also develops ADX-629, an orally administered RASP modulator that is in Phase 2 clinical trials for the treatment of COVID-19, atopic asthma, psoriasis, and alcohol intoxication. In addition, it develops preclinical RASP platforms, including ADX 248, ADX 246, and other novel RASP modulators for the treatment of various diseases associated with RASP. The company was formerly known as Aldexa Therapeutics, Inc. and changed its name to Aldeyra Therapeutics, Inc. in March 2014. Aldeyra Therapeutics, Inc. was incorporated in 2004 and is based in Lexington, Massachusetts.

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