NASDAQ:BLGO BioLargo (BLGO) Stock Price, News & Analysis $0.19 +0.01 (+3.33%) As of 02:29 PM Eastern Add Compare Share Share Stock Analysis Stock AnalysisChartCompetitorsHeadlinesSEC FilingsShort InterestTrendsBuy This Stock About BioLargo Stock (NASDAQ:BLGO) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get BioLargo alerts:Sign Up Key Stats Today's Range$0.18▼$0.1950-Day Range$0.18▼$0.2252-Week Range$0.16▼$0.32Volume227,723 shsAverage Volume313,982 shsMarket Capitalization$58.04 millionP/E RatioN/ADividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview BioLargo, Inc. invents, develops, and commercializes various platform technologies. Its technologies solve challenging environmental problems comprising per - and polyfluoroalkyl substances (PFAS) water contamination, advanced water and wastewater treatment, industrial odor and volatile organic compounds control, air quality control, infection control, and myriad environmental remediation. The company provides full-service environmental engineering services. BioLargo, Inc. was incorporated in 1991 and is based in Westminster, California. Read More BioLargo Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks8th Percentile Overall ScoreBLGO MarketRank™: BioLargo scored higher than 8% of companies evaluated by MarketBeat, and ranked 99th out of 100 stocks in the construction sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's OpinionN/AAnalyst RatingN/A Consensus RatingThere is not enough analysis data for BioLargo. Earnings and Valuation0.0 / 5Proj. Earnings GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of BioLargo is -18.93, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of BioLargo is -18.93, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioBioLargo has a P/B Ratio of 18.93. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities. Short Interest3.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted0.04% of the float of BioLargo has been sold short.Short Interest Ratio / Days to CoverBioLargo has a short interest ratio ("days to cover") of 0.1, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in BioLargo has recently increased by 5.43%, indicating that investor sentiment is decreasing significantly. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldBioLargo does not currently pay a dividend.Dividend GrowthBioLargo does not have a long track record of dividend growth. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted0.04% of the float of BioLargo has been sold short.Short Interest Ratio / Days to CoverBioLargo has a short interest ratio ("days to cover") of 0.1, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in BioLargo has recently increased by 5.43%, indicating that investor sentiment is decreasing significantly. News and Social Media2.5 / 5News SentimentN/A News SentimentBioLargo has a news sentiment score of 0.46. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a lower news sentiment than the 0.93 average news sentiment score of Construction companies.News Coverage This WeekMarketBeat has tracked 1 news article for BioLargo this week, compared to 0 articles on an average week.MarketBeat Follows3 people have added BioLargo to their MarketBeat watchlist in the last 30 days. Company Ownership0.8 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, BioLargo insiders have not sold or bought any company stock.Percentage Held by Insiders19.30% of the stock of BioLargo is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by InstitutionsOnly 0.04% of the stock of BioLargo is held by institutions.Read more about BioLargo's insider trading history. Receive BLGO Stock News and Ratings via Email Sign-up to receive the latest news and ratings for BioLargo and its competitors with MarketBeat's FREE daily newsletter. Email Address BLGO Stock News HeadlinesBioLargo Highlights 2025 Progress and Future OutlookJuly 23 at 10:22 AM | tipranks.comBioLargo initiates alpha testing of Verralize’s portable PFAS test kitJuly 2, 2025 | finance.yahoo.com[No Brainer Gold Play]: “Show me a better investment.”A Historic Gold Announcement Is About to Rock Wall Street? For months, sharp-eyed analysts have watched the quiet buildup behind the scenes. Now, in just days, the floodgates are set to open. The greatest investor of all time could validate what Garrett Goggin has been saying for months: Gold is entering a once-in-a-generation mania. Front-running Buffett has never been more urgent — and four tiny miners could be your ticket to 100X gains.July 25 at 2:00 AM | Golden Portfolio (Ad)Independent Evaluation Confirms Breakthrough Performance of BioLargo’s Cellinity Battery Technology for Grid-Scale Energy StorageJune 18, 2025 | usatoday.comEarnings call transcript: BioLargo Q1 2025 revenue misses forecast, stock dipsMay 17, 2025 | investing.comBioLargo Inc (BLGO) Q1 2025 Earnings Call Highlights: Strategic Innovations Amid Financial ...May 16, 2025 | finance.yahoo.comBioLargo, Inc: BioLargo's PFAS Solution Provides Dramatic Long-Term Cost Savings Compared with Incumbent TechnologiesMay 5, 2025 | finanznachrichten.deEarnings call transcript: BioLargo Q1 2025 reveals strong revenue growthApril 2, 2025 | investing.comSee More Headlines BLGO Stock Analysis - Frequently Asked Questions How have BLGO shares performed this year? BioLargo's stock was trading at $0.19 at the start of the year. Since then, BLGO stock has decreased by 0.4% and is now trading at $0.1893. How do I buy shares of BioLargo? Shares of BLGO stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of BioLargo own? Based on aggregate information from My MarketBeat watchlists, some other companies that BioLargo investors own include Hydrofarm Holdings Group (HYFM), Avino Silver & Gold Mines (ASM), Meta Platforms (META), Micron Technology (MU), Petroleo Brasileiro S.A.- Petrobras (PBR), Clean Energy Fuels (CLNE) and FuelCell Energy (FCEL). Company Calendar Today7/25/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorConstruction Industry Chemicals & allied products Sub-IndustryChemicals Current SymbolNASDAQ:BLGO CIK880242 Webwww.biolargo.com Phone(888) 400-2863Fax949-625-9819Employees30Year Founded1989Profitability EPS (Trailing Twelve Months)($0.01) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$3.50 million Net Margins-11.45% Pretax Margin-19.65% Return on Equity-39.90% Return on Assets-22.06% Debt Debt-to-Equity Ratio0.03 Current Ratio2.31 Quick Ratio2.24 Sales & Book Value Annual Sales$12.23 million Price / Sales4.75 Cash FlowN/A Price / Cash FlowN/A Book Value$0.01 per share Price / Book18.95Miscellaneous Outstanding Shares306,622,000Free Float240,168,000Market Cap$58.10 million OptionableNot Optionable Beta0.11 Social Links The Best Nuclear Energy Stocks to BuyNuclear energy stocks are roaring. It's the hottest energy sector of the year. 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