Free Trial

BioLargo (BLGO) Stock Chart & Stock Price History

BioLargo logo
$0.16 +0.01 (+5.43%)
As of 10/17/2025 03:50 PM Eastern

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 31.22%, with a year-to-date return of -13.16%. In the past month, the stock has decreased 18.28%, reflecting recent market activity.

As of the latest close, BioLargo traded at $0.17 with a market cap of $51.23 million and volume of 632,923 shares. Five years ago, the stock traded at $0.15, representing a 9.27% increase over that period. At the time, it had a market cap of $33.47 million and a volume of 85,929 shares.

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.

By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
5 Day
Performance
-1.32%
1 Month
Performance
-18.28%
3 Month
Performance
-13.16%
Year-To-Date
Performance
-13.16%
1 Year
Performance
-31.22%
5 Year
Performance
+9.27%

BLGO Stock Chart for Sunday, October, 19, 2025

BioLargo Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
10/17/2025$0.16$0.17
+3.32%
$0.17$0.16632,923 shs$51.23 million
10/16/2025$0.16$0.16
-0.19%
$0.17$0.16429,628 shs$49.59 million
10/15/2025$0.17$0.16
-4.31%
$0.17$0.16404,027 shs$49.68 million
10/14/2025$0.17$0.17
-0.54%
$0.17$0.15550,179 shs$51.92 million
10/13/2025$0.16$0.17
+8.03%
$0.17$0.16381,291 shs$52.19 million
10/10/2025$0.17$0.16
-6.55%
$0.17$0.15798,256 shs$48.30 million
10/09/2025$0.16$0.17
+3.67%
$0.17$0.15808,235 shs$51.66 million
10/08/2025$0.17$0.16
-4.35%
$0.18$0.151.00 million shs$49.83 million
10/07/2025$0.17$0.17
-0.36%
$0.18$0.16448,852 shs$52.09 million
10/06/2025$0.17$0.17
+1.94%
$0.17$0.15867,748 shs$52.28 million
10/03/2025$0.17$0.17
-3.78%
$0.17$0.16529,007 shs$51.23 million
10/02/2025$0.17$0.17
-1.49%
$0.18$0.17409,961 shs$53.25 million
10/01/2025$0.17$0.17
+2.95%
$0.18$0.17347,949 shs$54.06 million
09/30/2025$0.18$0.17
-5.36%
$0.18$0.16241,667 shs$52.51 million
09/29/2025$0.18$0.18
-0.22%
$0.18$0.16197,315 shs$55.48 million
09/26/2025$0.16$0.18
+9.06%
$0.18$0.16288,653 shs$55.60 million
09/25/2025$0.19$0.16
-13.01%
$0.20$0.143.48 million shs$50.99 million
09/24/2025$0.19$0.19
-1.61%
$0.20$0.18596,795 shs$58.61 million
09/23/2025$0.20$0.19
-3.32%
$0.20$0.19431,902 shs$59.57 million
09/22/2025$0.20$0.20
-1.54%
$0.20$0.19424,049 shs$61.62 million
09/19/2025$0.21$0.20
-2.37%
$0.21$0.19404,766 shs$62.43 million
09/18/2025$0.22$0.21
-4.48%
$0.22$0.20390,420 shs$63.94 million
09/17/2025$0.23$0.22
-5.09%
$0.23$0.21503,345 shs$66.94 million

This page (NASDAQ:BLGO) was last updated on 10/19/2025 by MarketBeat.com Staff
From Our Partners