ALDX Stock — Aldeyra The

Aldeyra The (ALDX)

Updated October 16, 2026.

ALDX is a Stock. Total return is -90.3% over the past 12.5 years, 490.3 points behind SPY at 400.0%.

Aldeyra Therapeutics is a biotechnology company that discovers and develops therapies for immune-mediated diseases, with its lead candidate reproxalap in Phase III trials for dry eye disease and allergic conjunctivitis, alongside other pipeline programs targeting conditions including retinitis pigmentosa, psoriasis, and asthma. The company does not currently distribute dividends to shareholders. This stock appeals primarily to investors seeking exposure to clinical-stage biotech development rather than current income.

ALDX performance versus SPY

Price and return data through 2026-10-16.

Total return is -90.3% over the past 12.5 years, 490.3 points behind SPY at 400.0%. Over the past year its total return — price change plus distributions reinvested — is -87.0%. Its deepest 1-year drawdown was 87.5%.

ALDX key facts

Asset type

Stock

Asset class

Equity

Inception date

05/02/2014

Distribution frequency

None

Last close

$0.70 (as of 2026-10-16)

Market cap

$42,234,527

Average volume

1808439.0

Beta

1.2

Payout ratio

0.0%

EPS

$-0.38

How Dividend Vision calculates yield and returns

Distribution rate (the posted rate) uses calculation basis unavailable. Issuer rates can use a different denominator and date, including ex-date NAV. Trailing-12-month yield is the sum of split-adjusted cash distributions with ex-dates in the last 12 months, divided by the published price. It lags a recent raise or cut. Total return uses split-adjusted close with distributions reinvested on the ex-dividend date (a modeling convention, not the cash-settlement date) from the first stored bar on or after inception through the latest bar, compared with the same window on the benchmark. That is the security's total return, not your personal gain/loss.

Yield and safety methodology · Distribution rate methodology · Distribution Safety Score methodology

Sources and review

Primary sources: prices and distributions from Dividend Vision, derived from vendor EOD data.

Reviewed by Bert Sweet, CEO and Co-owner of Dividend Vision. Methodology: Distribution Safety Score.

ALDX risks and drawbacks

Total return has trailed SPY over the available window. The deepest 1-year drawdown on record here is 87.5%.

Who may consider ALDX — and who may not

It is a weaker fit for investors who need monthly cash flow (ALDX does not currently distribute); investors whose main goal is matching SPY total return. This is educational context, not a recommendation to buy or sell.

More on ALDX

• All tickers starting with A

Tagged: Healthcare.

Frequently asked questions