BioLargo (BLGO) Stock Chart & Stock Price History $0.21 -0.01 (-2.47%) As of 05/21/2025 03:21 PM Eastern Add Compare Share Share Chart Stock AnalysisChartCompetitorsHeadlinesSEC FilingsTrendsBuy 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 28.88%, with a year-to-date return of 10.05%. In the past month, the stock has decreased 8.29%, reflecting recent market activity. As of the latest close, BioLargo traded at $0.21 with a market cap of $63.25 million and volume of 520,278 shares. Five years ago, the stock traded at $0.18, representing a 19.49% increase over that period. At the time, it had a market cap of $24.64 million and a volume of 1.46 million 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-2.70%1 Month Performance-8.29%3 Month Performance-21.00%Year-To-Date Performance+10.05%1 Year Performance-28.88%5 Year Performance+19.49% BLGO Stock Chart for Thursday, May, 22, 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 Capitalization05/21/2025$0.21$0.21-2.47%$0.21$0.20520,278 shs$63.25 million05/20/2025$0.21$0.21+1.18%$0.21$0.2075,429 shs$64.85 million05/19/2025$0.21$0.21-1.40%$0.21$0.20243,091 shs$64.09 million05/16/2025$0.24$0.21-10.42%$0.23$0.21687,274 shs$64.89 million05/15/2025$0.24$0.24-1.68%$0.24$0.23369,924 shs$72.43 million05/14/2025$0.25$0.24-2.01%$0.26$0.23204,857 shs$73.67 million05/13/2025$0.25$0.25-0.24%$0.26$0.23613,209 shs$75.18 million05/12/2025$0.24$0.25+4.65%$0.25$0.22522,414 shs$75.28 million05/09/2025$0.25$0.24-2.65%$0.25$0.22354,898 shs$71.94 million05/08/2025$0.24$0.25+3.46%$0.25$0.23416,616 shs$73.90 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. 05/07/2025$0.23$0.24+4.46%$0.24$0.22250,506 shs$71.42 million05/06/2025$0.22$0.23+4.52%$0.23$0.21566,221 shs$68.38 million05/05/2025$0.22$0.22-2.52%$0.25$0.22641,856 shs$65.42 million05/02/2025$0.23$0.22-1.11%$0.23$0.22170,126 shs$67.06 million05/01/2025$0.22$0.23+0.09%$0.24$0.22182,097 shs$67.81 million04/30/2025$0.23$0.22-2.47%$0.23$0.22208,471 shs$67.75 million04/29/2025$0.24$0.23-3.27%$0.24$0.22222,340 shs$69.47 million04/28/2025$0.24$0.24+0.76%$0.24$0.23112,807 shs$71.82 million04/25/2025$0.23$0.24+1.50%$0.24$0.2312,714 shs$71.28 million04/24/2025$0.23$0.23+1.30%$0.24$0.23108,616 shs$70.22 million04/23/2025$0.23$0.23+0.88%$0.23$0.23111,054 shs$69.32 million04/22/2025$0.24$0.23-4.44%$0.24$0.23147,500 shs$68.71 million04/21/2025$0.23$0.24+2.84%$0.24$0.23116,818 shs$71.91 million Related Companies ADUR Stock Chart ARQ Stock Chart ZTEK Stock Chart VGAS Stock Chart ORGN Stock Chart TSE Stock Chart CBUS Stock Chart AMTX Stock Chart ALTO Stock Chart LODE 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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