BioLargo (BLGO) - Market capitalization

Market cap: $55.64 Million USD

As of December 2025 BioLargo has a market cap of $55.64 Million USD. This makes BioLargo the world's 9721th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of BioLargo from 1997 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	$55.64 M	-7.57%
2024	$60.2 M	23.81%
2023	$48.62 M	-9.41%
2022	$53.67 M	-1.85%
2021	$54.68 M	99.93%
2020	$27.35 M	-22.74%
2019	$35.4 M	11.75%
2018	$31.68 M	-19.6%
2017	$39.41 M	-47%
2016	$74.36 M	73.33%
2015	$42.9 M	66.92%
2014	$25.7 M	36.85%
2013	$18.78 M	10.66%
2012	$16.97 M	-9.07%
2011	$18.66 M	-27.92%
2010	$25.89 M	-14.37%
2009	$30.23 M	74.87%
2008	$17.29 M	-54.76%
2007	$38.22 M	3962.93%
2006	$0.94 M	1408.31%
2005	$0.06 M	-86.46%
2004	$0.46 M	-65.54%
2003	$1.33 M	-69.08%
2002	$4.32 M	-48.34%
2001	$8.36 M	21.19%
2000	$6.9 M	102.89%
1999	$3.4 M	22.16%
1998	$2.78 M	-51.77%
1997	$5.77 M

End of Day market cap according to different sources

On Dec 12th, 2025 the market cap of BioLargo was reported to be:

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Innospec IOSP	$1.94 B	3,389.36%	🇺🇸 USA
W. R. Grace GRA	$4.63 B	8,235.19%	🇺🇸 USA
Lightwave Logic LWLG	$0.55 B	896.61%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of BioLargo (BLGO)

Market cap: $55.64 Million USD