Other US listings · BLGO · stock
Biolargo, INC. (BLGO) stock price history
Every Other US listings trading session of Biolargo, INC. from Mar 22, 2007 to Jul 17, 2026: 4,861 daily bars, adjusted for splits and dividends, with minute bars arriving as capture begins. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
BLGO adjusted close, 2007 to 2026
- $2.00
- All time high, 2008
- $0.2300
- 52 week high, $0.1000 low
- 4,861
- Daily sessions since 2007
Last updated Jul 17, 2026, the last stored session. Refreshes after each trading day. Full 2007 to 2026 series and minute bars.
BLGO key facts
- Biolargo, INC. (BLGO) closed at $0.1100 on Jul 17, 2026 on Other US listings.
- BLGO's all time high close is $2.00, set on Jan 25, 2008; its all time low close is $0.1000 on Jun 2, 2026.
- BLGO's 52 week range is $0.1000 to $0.2300.
- BLGO returned -42.1% over the year to Jul 17, 2026 and -42.1% over five years.
- Over ten years BLGO returned -73%, -12.3% a year compounded.
- BLGO's deepest drawdown was -95.0% from Jan 25, 2008 to Jun 2, 2026.
- DataCedar holds 4,861 daily sessions of BLGO history from Mar 22, 2007, adjusted for splits and dividends, served by the API under a key.
BLGO price chart, 2007 to 2026
BLGO returns
Price return from the last close on or before the window start to Jul 17, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | 0.0% |
| 3 months | -26.7% |
| 6 months | -42.1% |
| Year to date | -38.9% |
| 1 year | -42.1% |
| 3 years | -38.9% |
| 5 years | -42.1% |
| 10 years | -73.2% |
| Since Mar 22, 2007 | -89.1% |
| Compound annual growth, 19.3 years | -10.8% |
BLGO records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $2.00 on Jan 25, 2008
- All time low close
- $0.1000 on Jun 2, 2026
- 52 week high
- $0.2300 on Aug 28, 2025
- 52 week low
- $0.1000 on Jun 2, 2026
- Deepest drawdown
- -95.0% from Jan 25, 2008 to Jun 2, 2026, not yet recovered
- Best single session
- +122.9% on Nov 20, 2008
- Worst single session
- -55.1% on Oct 24, 2008
- Volatility, 1 year annualised
- 84.0%
- Sessions closing higher, 1 year
- 17%
- Best calendar year
- 2021, +75%
- Worst calendar year
- 2008, -57%
BLGO price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2007 starts on Mar 22, 2007; 2026 runs to Jul 17, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $0.1900 | $0.2000 | $0.1000 | $0.1100 | -38.9% | 47.5M | 135 |
| 2025 | $0.2000 | $0.3200 | $0.1400 | $0.1800 | -5.3% | 92.7M | 250 |
| 2024 | $0.1700 | $0.4500 | $0.1600 | $0.1900 | +11.8% | 74.4M | 252 |
| 2023 | $0.1900 | $0.2400 | $0.1500 | $0.1700 | -10.5% | 62.4M | 250 |
| 2022 | $0.2100 | $0.3200 | $0.1500 | $0.1900 | -9.5% | 84.4M | 251 |
| 2021 | $0.1400 | $0.3500 | $0.1300 | $0.2100 | +75.0% | 122.2M | 252 |
| 2020 | $0.2200 | $0.3100 | $0.1000 | $0.1200 | -45.5% | 79.5M | 253 |
| 2019 | $0.2600 | $0.4000 | $0.1100 | $0.2200 | -8.3% | 48.2M | 252 |
| 2018 | $0.3900 | $0.4600 | $0.1800 | $0.2400 | -38.5% | 22.1M | 251 |
| 2017 | $0.8100 | $0.8300 | $0.3800 | $0.3900 | -53.0% | 17M | 251 |
| 2016 | $0.5100 | $1.08 | $0.3000 | $0.8300 | +66.0% | 24.4M | 252 |
| 2015 | $0.3100 | $0.8300 | $0.2200 | $0.5000 | +61.3% | 8.2M | 252 |
| 2014 | $0.2500 | $1.24 | $0.1800 | $0.3100 | +24.0% | 6.5M | 252 |
| 2013 | $0.2400 | $0.4000 | $0.0400 | $0.2500 | +4.2% | 1.8M | 252 |
| 2012 | $0.3200 | $0.5100 | $0.2100 | $0.2400 | -25.0% | 3.3M | 250 |
| 2011 | $0.5000 | $0.6000 | $0.2200 | $0.3200 | -36.0% | 2.6M | 252 |
| 2010 | $0.7000 | $0.7000 | $0.1200 | $0.5000 | -28.6% | 3M | 252 |
| 2009 | $0.8900 | $0.8900 | $0.1600 | $0.7000 | +70.7% | 1.1M | 252 |
| 2008 | $0.9600 | $2.00 | $0.3000 | $0.4100 | -57.3% | 829K | 253 |
| 2007 | $1.01 | $1.01 | $0.3100 | $0.9600 | n/a | 661.6K | 197 |
BLGO monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| July 2026 | $0.1100 | 0.0% |
| June 2026 | $0.1100 | -15.4% |
| May 2026 | $0.1300 | -13.3% |
| April 2026 | $0.1500 | -6.2% |
| March 2026 | $0.1600 | -11.1% |
| February 2026 | $0.1800 | 0.0% |
| January 2026 | $0.1800 | 0.0% |
| December 2025 | $0.1800 | 0.0% |
| November 2025 | $0.1800 | +12.5% |
| October 2025 | $0.1600 | -5.9% |
| September 2025 | $0.1700 | -22.7% |
| August 2025 | $0.2200 | +22.2% |
About the BLGO data
Daily bars. 4,861 sessions from Mar 22, 2007 to Jul 17, 2026, one row per Other US listings trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Not stored for this listing yet. Minute history is captured forward from the day collection begins for a symbol and is never backfilled.
Time and currency. Session dates are Other US listings trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Mar 22, 2007, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/BLGO/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Other US listings
Browse Other US listings
Common questions
BLGO share price history
