OTCBB:BLGO

Biolargo Stock Price (Quote)

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$0.104
-0.0060 (-5.45%)
At Close: Jul 31, 2026

Range Low Price High Price Comment
30 days $0.100 $0.121 Friday, 31st Jul 2026 BLGO stock ended at $0.104. This is 5.45% less than the trading day before Thursday, 30th Jul 2026. During the day the stock fluctuated 6.91% from a day low at $0.103 to a day high of $0.110.
90 days $0.0995 $0.159
52 weeks $0.0995 $0.234

Historical BioLargo, Inc prices

Date Open High Low Close Volume
Jul 31, 2026 $0.103 $0.110 $0.103 $0.104 31 940
Jul 30, 2026 $0.111 $0.111 $0.110 $0.110 32 875
Jul 29, 2026 $0.105 $0.112 $0.100 $0.112 0
Jul 28, 2026 $0.108 $0.114 $0.101 $0.104 122 566
Jul 27, 2026 $0.106 $0.115 $0.105 $0.108 95 991
Jul 24, 2026 $0.111 $0.120 $0.108 $0.113 275 673
Jul 23, 2026 $0.115 $0.115 $0.107 $0.115 116 323
Jul 22, 2026 $0.113 $0.119 $0.113 $0.119 23 030
Jul 21, 2026 $0.110 $0.115 $0.104 $0.115 199 983
Jul 20, 2026 $0.108 $0.121 $0.104 $0.110 484 519
Jul 17, 2026 $0.107 $0.110 $0.107 $0.108 89 153
Jul 16, 2026 $0.109 $0.118 $0.107 $0.109 118 450
Jul 15, 2026 $0.120 $0.120 $0.108 $0.112 140 000
Jul 14, 2026 $0.119 $0.119 $0.115 $0.118 13 023
Jul 13, 2026 $0.114 $0.120 $0.110 $0.119 98 047
Jul 10, 2026 $0.111 $0.115 $0.107 $0.115 12 855
Jul 09, 2026 $0.113 $0.120 $0.107 $0.115 465 410
Jul 08, 2026 $0.110 $0.116 $0.110 $0.116 199 566
Jul 07, 2026 $0.120 $0.120 $0.105 $0.108 212 391
Jul 06, 2026 $0.118 $0.120 $0.110 $0.120 83 357
Jul 02, 2026 $0.117 $0.118 $0.108 $0.111 195 708
Jul 01, 2026 $0.118 $0.118 $0.107 $0.113 196 240
Jun 30, 2026 $0.114 $0.121 $0.104 $0.114 424 842
Jun 29, 2026 $0.115 $0.121 $0.111 $0.120 107
Jun 26, 2026 $0.107 $0.107 $0.107 $0.107 0

FAQ

What are historical stock prices?
Historical stock prices refer to a stock’s recorded prices at various past points. These prices include several key figures that help investors and analysts evaluate a stock’s performance over time:
Open: Open price for the trading day.
High: Highest price for the trading day.
Low: Lowest price for the trading day.
Close: Close price for the trading day.

Additionally, historical prices often include:
Volume is the number of shares traded during the day. It indicates how actively a stock was traded and can provide insights into market sentiment and liquidity.

How can I use BLGO stock historical prices to predict future price movements?
Trend Analysis: Examine the BLGO stock’s historical trends to identify patterns that might continue.
Moving Averages: Use moving averages to detect potential reversal points.
Momentum Indicators: Apply indicators like RSI or MACD to assess the momentum and strength of price movements.
Volume Analysis: Analyze trading volume alongside price changes to gauge trend strength.
Statistical Methods: Use statistical tools such as regression analysis to model and forecast future prices based on past data.
These techniques can provide insights but should be used with risk management practices to mitigate potential losses.

What impact do stock splits have on historical price data?
When a company performs a stock split, it adjusts the historical price data to reflect the new, lower trading price as if it had always been that way.

This ensures consistency for anyone analyzing the stock’s past prices. The adjustment helps prevent misleading signals on charts, such as false sell signals or bearish trends that aren’t there. For instance, in a 2-for-1 stock split, the price per share is cut in half, which would otherwise appear as a dramatic drop on the chart. If someone didn’t know about the split, they might wrongly think something negative happened to the company. Most technical indicators would also react to this apparent drop by signaling to sell.

A stock split, while making the shares seem more affordable and potentially more attractive to investors, doesn’t alter the company’s fundamental value.

Why do the BLGO stock historical prices show a range for periods like 30 days, 90 days, and 52 weeks?
The range provides the lowest and highest prices at which the stock has traded during the specified period. This helps investors understand the stock’s volatility and price variability within that timeframe.

How can I use historical price volatility to assess risk?
High price volatility historically indicates higher risk and potentially higher returns. Investors can gauge the stock’s risk level by examining the range between high and low prices over various periods.
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ABOUT BIOLARGO, INC
BioLargo
BioLargo, Inc. invents, develops, and commercializes various platform technologies. The company's technologies solve challenging environmental problems comprising per- and polyfluoroalkyl substances contamination, advanced water and wastewater treatment, industrial odor and VOC control, air quality control, and infection control. It holds various issued patents, maintains a pipeline of products, and provides full-service environmental engineering...
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