BLGO Stock — BioLargo Inc

BioLargo Inc (BLGO)

Updated October 16, 2026.

BLGO is a Stock. Total return is -99.9% over the past 24.8 years, 1033.9 points behind SPY at 934.0%.

BioLargo develops and commercializes environmental technologies addressing water contamination (including PFAS), wastewater treatment, air quality control, odor management, infection control, and remediation, alongside battery energy storage and antimicrobial medical device platforms. The company does not currently distribute dividends. BioLargo appeals to investors seeking exposure to environmental remediation and water treatment innovation rather than current income.

BLGO performance versus SPY

Price and return data through 2026-10-16.

Total return is -99.9% over the past 24.8 years, 1033.9 points behind SPY at 934.0%. Over the past year its total return — price change plus distributions reinvested — is -55.6%. Its deepest 1-year drawdown was 64.5%.

BLGO key facts

Asset type

Stock

Asset class

Equity

Inception date

12/19/2001

Distribution frequency

None

Last close

$0.07 (as of 2026-10-16)

Market cap

$23,339,927

Average volume

195000.0

Beta

-0.116

Payout ratio

0.0%

Forward P/E

13.5685

EPS

$-0.05

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.

BLGO risks and drawbacks

Total return has trailed SPY over the available window. The deepest 1-year drawdown on record here is 64.5%.

Who may consider BLGO — and who may not

It is a weaker fit for investors who need monthly cash flow (BLGO 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 BLGO

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Tagged: Materials.

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