Stock listing
OTC:BLGO BioLargo, Inc. Stock
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Share price · OTC:BLGO
$0.062 USD -0.003 (-4.6%)
Close on Oct 30, 2026
- Day range
- $0.062 – $0.067 USDOct 30, 2026
- Volume
- 176,541 sharesOct 30, 2026
- Market cap
- $20.38M USDAt the close on Oct 30, 2026 · price × 328.7M shares outstanding
- 52-week range
- $0.062 – $0.200 USDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $35,435 USDMedian day 297,050 shares · last 3 months, Jul 30, 2026 – Oct 30, 2026
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · OTC:BLGO · USD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $0.062 | -0.003 | -4.6% | $0.065 | $0.067 | $0.062 | 176,541 | |
| $0.065 | +0.002 | +3.2% | $0.069 | $0.069 | $0.063 | 128,965 | |
| $0.063 | -0.006 | -8.7% | $0.064 | $0.067 | $0.063 | 202,086 | |
| $0.069 | +0.001 | +1.5% | $0.070 | $0.070 | $0.063 | 265,161 | |
| $0.068 | -0.002 | -2.9% | $0.072 | $0.072 | $0.068 | 159,800 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 244,200 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 172,900 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 310,600 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 319,500 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 290,500 | |
| $0.070 | 0.000 | 0.0% | $0.070 | $0.070 | $0.070 | 292,200 | |
| $0.070 | -0.010 | -12.5% | $0.080 | $0.080 | $0.070 | 287,000 | |
| $0.080 | 0.000 | 0.0% | $0.070 | $0.080 | $0.070 | 298,000 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.080 | $0.070 | 446,500 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.090 | $0.080 | 844,300 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.080 | $0.080 | 89,400 | |
| $0.080 | 0.000 | 0.0% | $0.070 | $0.080 | $0.070 | 774,300 | |
| $0.080 | +0.010 | +14.3% | $0.080 | $0.080 | $0.080 | 434,100 | |
| $0.070 | -0.010 | -12.5% | $0.080 | $0.080 | $0.070 | 380,400 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.080 | $0.080 | 1,428,100 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.080 | $0.080 | 141,600 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.080 | $0.080 | 168,800 | |
| $0.080 | 0.000 | 0.0% | $0.080 | $0.090 | $0.080 | 492,400 | |
| $0.080 | -0.010 | -11.1% | $0.080 | $0.090 | $0.080 | 182,900 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.090 | $0.090 | 211,900 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.090 | $0.080 | 704,800 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.090 | $0.090 | 260,100 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.090 | $0.090 | 465,900 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.100 | $0.090 | 173,500 | |
| $0.090 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 577,100 | |
| $0.090 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 296,100 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.100 | $0.090 | 362,100 | |
| $0.090 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 136,900 | |
| $0.090 | -0.010 | -10.0% | $0.090 | $0.100 | $0.090 | 789,000 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 77,600 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 754,600 | |
| $0.100 | 0.000 | 0.0% | $0.090 | $0.100 | $0.090 | 471,200 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 425,500 | |
| $0.100 | +0.010 | +11.1% | $0.090 | $0.100 | $0.090 | 648,000 | |
| $0.090 | 0.000 | 0.0% | $0.090 | $0.090 | $0.090 | 532,800 | |
| $0.090 | -0.010 | -10.0% | $0.090 | $0.100 | $0.090 | 666,500 | |
| $0.100 | +0.010 | +11.1% | $0.100 | $0.100 | $0.090 | 880,900 | |
| $0.090 | -0.010 | -10.0% | $0.100 | $0.100 | $0.090 | 239,700 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.110 | $0.100 | 334,000 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.100 | 108,900 | |
| $0.100 | -0.010 | -9.1% | $0.110 | $0.110 | $0.100 | 501,300 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 157,200 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 190,300 | |
| $0.110 | +0.010 | +10.0% | $0.100 | $0.110 | $0.100 | 273,300 | |
| $0.100 | +0.020 | +25.0% | $0.080 | $0.100 | $0.080 | 1,124,400 | |
| $0.080 | -0.020 | -20.0% | $0.100 | $0.100 | $0.080 | 1,337,700 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 290,400 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.090 | 332,400 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.110 | $0.100 | 209,800 | |
| $0.100 | 0.000 | 0.0% | $0.100 | $0.100 | $0.100 | 138,900 | |
| $0.100 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 306,800 | |
| $0.100 | -0.010 | -9.1% | $0.110 | $0.110 | $0.100 | 102,700 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 155,000 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 165,200 | |
| $0.110 | +0.010 | +10.0% | $0.110 | $0.110 | $0.100 | 489,400 | |
| $0.100 | -0.010 | -9.1% | $0.100 | $0.110 | $0.100 | 456,300 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 526,100 | |
| $0.110 | 0.000 | 0.0% | $0.100 | $0.110 | $0.100 | 665,900 | |
| $0.110 | +0.010 | +10.0% | $0.100 | $0.110 | $0.100 | 584,400 | |
| $0.100 | -0.010 | -9.1% | $0.100 | $0.110 | $0.100 | 171,100 | |
| $0.110 | 0.000 | 0.0% | $0.110 | $0.110 | $0.100 | 108,300 |
- Ticker
- OTC:BLGO
- Asset type
- Stock
- Exchange
- OTC
- Currency
- USD
What changed lately
Latest news release · Oct 28, 2026
BioLargo Introduces barebird, a Company-Owned Brand, Reuniting Key Teams Behind Pooph's Consumer Market Success
Latest deck · Sep 14, 2026
Corporate Update (September 2026)
Corporate update · 24 slides
Latest news
BioLargo Introduces barebird, a Company-Owned Brand, Reuniting Key Teams Behind Pooph's Consumer Market Success
Oct 28, 2026
Closed $0.063 (-8.7%) on Oct 28, 2026
BioLargo Subsidiary Clyra Medical to Exhibit at SAWC Fall 2026 in Las Vegas
Oct 13, 2026
Closed $0.08 (0.0%) on Oct 13, 2026
Decks
Corporate Update (September 2026)
Corporate update · 24 slides · Sep 14, 2026
FY2025 Earnings Presentation
Earnings · 12 slides · Mar 5, 2026
Q3 2025 Earnings Presentation
Earnings · 32 slides · Nov 14, 2025
LD Micro October 2025
Conference · 30 slides · Oct 20, 2025
BioLargo, Inc. on 6ix
- News releases
- 2 in the last 12 months · 3 in all · newest Oct 28, 2026 · oldest 2024
- Decks
- 26 decks · latest Sep 14, 2026
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