Nasdaq · ALTO · stock
Alto Ingredients, Inc. (ALTO) stock price history
Every Nasdaq trading session of Alto Ingredients, Inc. from Mar 24, 2005 to Sep 28, 2026: 5,412 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
ALTO adjusted close, 2005 to 2026
- $4,451
- All time high, 2006
- $6.11
- 52 week high, $0.9900 low
- 5,412
- Daily sessions since 2005
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2005 to 2026 series and minute bars.
ALTO key facts
- Alto Ingredients, Inc. (ALTO) closed at $3.67 on Sep 28, 2026 on Nasdaq.
- ALTO's all time high close is $4,451, set on May 11, 2006; its all time low close is $0.2300 on Mar 17, 2020.
- ALTO's 52 week range is $0.9900 to $6.11.
- ALTO returned +236.7% over the year to Sep 28, 2026 and -23.1% over five years.
- Over ten years ALTO returned -46%, -6.0% a year compounded.
- ALTO's deepest drawdown was -100.0% from May 11, 2006 to Mar 17, 2020.
- DataCedar holds 5,412 daily sessions of ALTO history from Mar 24, 2005 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
ALTO price chart, 2005 to 2026
ALTO returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -9.8% |
| 3 months | -29.3% |
| 6 months | -18.6% |
| Year to date | +26.1% |
| 1 year | +236.7% |
| 3 years | -17.0% |
| 5 years | -23.1% |
| 10 years | -46.0% |
| Since Mar 24, 2005 | -99.6% |
| Compound annual growth, 21.5 years | -23.0% |
ALTO records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $4,451 on May 11, 2006
- All time low close
- $0.2300 on Mar 17, 2020
- 52 week high
- $6.11 on Jul 1, 2026
- 52 week low
- $0.9900 on Nov 3, 2025
- Deepest drawdown
- -100.0% from May 11, 2006 to Mar 17, 2020, not yet recovered
- Best single session
- +65.4% on Feb 27, 2014
- Worst single session
- -60.8% on Nov 7, 2023
- Volatility, 1 year annualised
- 86.9%
- Sessions closing higher, 1 year
- 47%
- Best calendar year
- 2020, +735%
- Worst calendar year
- 2008, -95%
ALTO 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. 2005 starts on Mar 24, 2005; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $2.87 | $6.11 | $2.25 | $3.67 | +27.4% | 350.5M | 185 |
| 2025 | $1.60 | $3.18 | $0.7600 | $2.88 | +84.6% | 185.1M | 250 |
| 2024 | $2.66 | $2.80 | $1.18 | $1.56 | -41.4% | 154.4M | 252 |
| 2023 | $2.90 | $4.97 | $1.20 | $2.66 | -7.6% | 309.6M | 250 |
| 2022 | $4.82 | $7.37 | $2.61 | $2.88 | -40.1% | 439.1M | 251 |
| 2021 | $5.50 | $8.34 | $4.39 | $4.81 | -11.4% | 707.7M | 252 |
| 2020 | $0.6500 | $11.44 | $0.2200 | $5.43 | +735.4% | 964.4M | 253 |
| 2019 | $0.9600 | $1.67 | $0.3900 | $0.6500 | -24.4% | 101M | 252 |
| 2018 | $4.55 | $4.75 | $0.7600 | $0.8600 | -81.1% | 149.8M | 251 |
| 2017 | $9.65 | $10.05 | $4.10 | $4.55 | -52.1% | 143.8M | 251 |
| 2016 | $4.70 | $10.95 | $2.41 | $9.50 | +98.7% | 174.2M | 252 |
| 2015 | $10.37 | $13.70 | $3.74 | $4.78 | -53.7% | 253.5M | 252 |
| 2014 | $5.10 | $23.97 | $4.83 | $10.33 | +102.9% | 375.9M | 252 |
| 2013 | $4.95 | $7.05 | $2.33 | $5.09 | +6.0% | 91.7M | 252 |
| 2012 | $16.65 | $25.35 | $4.05 | $4.80 | -69.8% | 59.9M | 250 |
| 2011 | $77.70 | $119.70 | $3.75 | $15.90 | -79.0% | 51.6M | 252 |
| 2010 | $74.55 | $288.75 | $38.85 | $75.60 | +1.4% | 7.3M | 252 |
| 2009 | $47.25 | $111.30 | $21.00 | $74.55 | +61.4% | 1.5M | 252 |
| 2008 | $891.45 | $966.00 | $36.75 | $46.20 | -94.6% | 2.7M | 253 |
| 2007 | $1,609 | $1,973 | $441.00 | $862.05 | -46.7% | 2.4M | 251 |
| 2006 | $1,181 | $4,673 | $1,045 | $1,616 | +42.2% | 5.6M | 251 |
| 2005 | $976.50 | $1,447 | $741.30 | $1,136 | n/a | 145.6K | 196 |
ALTO monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $3.67 | -7.3% |
| August 2026 | $3.96 | -16.8% |
| July 2026 | $4.76 | -16.5% |
| June 2026 | $5.70 | +4.6% |
| May 2026 | $5.45 | -1.3% |
| April 2026 | $5.52 | +14.0% |
| March 2026 | $4.84 | +112.3% |
| February 2026 | $2.28 | -8.8% |
| January 2026 | $2.50 | -13.2% |
| December 2025 | $2.88 | +12.9% |
| November 2025 | $2.55 | +152.5% |
| October 2025 | $1.01 | -6.5% |
About the ALTO data
Daily bars. 5,412 sessions from Mar 24, 2005 to Sep 28, 2026, one row per Nasdaq 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. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Nasdaq 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 24, 2005, 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/ALTO/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
ALTO share price history
