BioLargo (BLGO) Stock Chart & Stock Price History $0.20 +0.00 (+2.05%) As of 07/3/2025 12:55 PM Eastern Add Compare Share Share Chart Stock AnalysisChartCompetitorsHeadlinesSEC FilingsShort InterestTrendsBuy This Stock BioLargo Stock Price Performance The BioLargo (BLGO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 22.99%, with a year-to-date return of 4.74%. In the past month, the stock has decreased 2.78%, reflecting recent market activity. As of the latest close, BioLargo traded at $0.20 with a market cap of $60.83 million and volume of 242,179 shares. Five years ago, the stock traded at $0.18, representing a 8.21% increase over that period. At the time, it had a market cap of $27.28 million and a volume of 258,222 shares. Receive BLGO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for BioLargo and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-3.21%1 Month Performance-2.78%3 Month Performance-20.81%Year-To-Date Performance+4.74%1 Year Performance-22.99%5 Year Performance+8.21% BLGO Stock Chart for Saturday, July, 5, 2025 BLGO Chart by TradingView BioLargo Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization07/04/2025$0.20$0.20$0.21$0.20242,179 shs$60.83 million07/03/2025$0.20$0.20+2.05%$0.21$0.20242,179 shs$60.83 million07/02/2025$0.20$0.20-2.35%$0.20$0.19131,664 shs$59.61 million07/01/2025$0.21$0.20-2.87%$0.21$0.19690,316 shs$61.04 million06/30/2025$0.20$0.21+4.90%$0.21$0.20505,835 shs$62.85 million06/27/2025$0.20$0.20-1.21%$0.21$0.20272,022 shs$59.80 million06/26/2025$0.21$0.20-4.15%$0.21$0.19622,831 shs$60.53 million06/25/2025$0.21$0.21-0.96%$0.21$0.20315,354 shs$63.15 million06/24/2025$0.21$0.21-0.48%$0.22$0.20375,777 shs$63.76 million06/23/2025$0.20$0.21+2.59%$0.21$0.20329,686 shs$64.07 million Get the Latest News and Ratings for BLGO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for BioLargo and its competitors with MarketBeat's FREE daily newsletter. 06/20/2025$0.21$0.20-2.06%$0.23$0.20666,290 shs$62.30 million06/19/2025$0.21$0.21$0.22$0.20223,583 shs$63.61 million06/18/2025$0.20$0.21+2.20%$0.22$0.20223,583 shs$63.61 million06/17/2025$0.20$0.20+2.40%$0.20$0.19295,601 shs$62.24 million06/16/2025$0.20$0.20-0.15%$0.20$0.19389,113 shs$60.78 million06/13/2025$0.20$0.20-1.23%$0.20$0.19292,891 shs$60.87 million06/12/2025$0.20$0.20+0.40%$0.21$0.19531,206 shs$61.63 million06/11/2025$0.21$0.20-2.98%$0.21$0.19597,758 shs$61.35 million06/10/2025$0.21$0.21+1.41%$0.22$0.20938,111 shs$63.24 million06/09/2025$0.22$0.21-6.82%$0.22$0.21628,793 shs$62.35 million06/06/2025$0.20$0.22+7.47%$0.22$0.20506,529 shs$66.79 million06/05/2025$0.21$0.20-1.59%$0.21$0.20122,445 shs$62.15 million06/04/2025$0.21$0.21-0.34%$0.21$0.20348,503 shs$63.15 million Related Companies ARQ Stock Chart VGAS Stock Chart AMTX Stock Chart LODE Stock Chart ZTEK Stock Chart TSE Stock Chart ALTO Stock Chart ORGN Stock Chart LNZA Stock Chart LOOP Stock Chart Receive BLGO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for BioLargo and its competitors with MarketBeat's FREE daily newsletter. 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