Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
BioLargoBLGO +1.43% Net Margin % is -221.71% as of Jun. 2026. The stock has 8 warning signs investors should review. Among 1,586 Chemicals companies, BioLargo ranks worse than 98.17% on this metric.
Net margin is calculated as Net Income divided by its Revenue. BioLargo's Net Income for the
three
months ended in Jun. 2026 was $-2.77 Mil. BioLargo's Revenue for the
three
months ended in Jun. 2026 was $1.25 Mil. Therefore, BioLargo's net margin for the quarter that ended in Jun. 2026 was -221.71%.
The historical rank and industry rank for BioLargo's Net Margin % or its related term are showing as below:
BLGO'
s Net Margin % Range Over the Past 10 Years
Min: -2790.04 Med: -313.22 Max: -13.51
Current: -354.76
BLGO's Net Margin % is ranked worse than 98.17% of 1586
companies
in the Chemicals industry
Industry Median: 4.76
vs BLGO: -354.76
Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.
But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.
BioLargo Net Margin % Related Terms
BioLargo Net Margin % Historical Data
* Premium members only.
The historical data trend for BioLargo's Net Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Specialty Chemicals subindustry, BioLargo's Net Margin %, along with its competitors' market caps and Net Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
BioLargo Net Margin % vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, BioLargo's Net Margin % distribution charts can be found below:
* The bar in red indicates where BioLargo's Net Margin % falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
BioLargo (BLGO) has a Net Margin % of -221.71% as of Jun. 2026. Net margin is the ratio of total net income to net sales. View historical data on BioLargo and its competitors. According to the industry distribution chart, BioLargo ranks #1557 out of 1586 companies in the Chemicals industry, placing it in the top 98.2%.
Is BioLargo's Net Margin % too high?
BioLargo's current Net Margin % is -221.71%. Based on the distribution chart, BioLargo ranks #1557 out of 1586 companies in the Chemicals industry, which is in the bottom quartile relative to peers.
How does BioLargo's Net Margin % compare to BIOF and LOOP?
According to the Chemicals industry distribution chart, BioLargo ranks #1557 out of 1586 companies for Net Margin %. This places BioLargo in the lower half of its industry. The industry median Net Margin % is 4.76. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Net Margin % for a Chemicals company?
The median Net Margin % among Chemicals companies is 4.76, based on 1,586 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on BioLargo and its competitors. For the Chemicals industry, the median Net Margin % is 4.76 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. BioLargo's current Net Margin % is -221.71%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BioLargo stock overvalued right now?
Based on GuruFocus' analysis, BioLargo (BLGO) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.07, compared to a current price of $0.09 — trading 35.5% above its estimated fair value. The current Net Margin % is -221.71%. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For BioLargo (BLGO), the current Net Margin % is -221.71% as of Jun. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
BioLargo Inc invents, develops, and commercializes platform technologies to solve challenging environmental problems like PFAS contamination, water and wastewater treatment, industrial odor, VOC control, air quality control, and infection control. The company has six segments: ONM Environmental; Clyra Medical; BLEST; BETI; BEST; and BioLargo Canada. ONM Environmental, which sells odor and volatile organic control products and services, located in Westminster, California, derives the maximum revenue.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BLGO has been successfully added to your 
