Alto Ingredients Stock Price History
NASDAQ: ALTOIndustrialsMajor ChemicalsUSD
3.73-0.005 (-0.13%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
ALTO price history at a glance
The price history for Alto Ingredients (ALTO) on this page begins on March 21, 2005, when the stock closed at $1,008.00; it most recently closed at $3.73 on October 5, 2026. The highest price in this record is $4,672.50, reached on May 8, 2006; the latest close is 99.9% below that peak. Across the 20 complete calendar years in the table, ALTO finished higher in 7 and lower in 13. Its best year was 2020 (+562.2%) and its worst was 2008 (-94.7%).
Over roughly 22 years the share price changed -99.6%, a -22.9% compound annual price return (excluding dividends). In the last 12 months alone, ALTO has gained 232.6%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2005
- $4,672.50
- Date of high
- May 8, 2006
- Low since 2005
- $0.22
- Date of low
- Mar 16, 2020
- 52-week high
- $6.11
- 52-week low
- $0.99
- Last close
- $3.73
ALTO returns
1 week
-1.19%
1 month
-7.34%
3 months
-33.84%
6 months
-22.40%
Year to date
+29.34%
1 year
+232.59%
3 years
-9.59%
5 years
-33.24%
ALTO price return, excluding dividends.
ALTO annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 3.73 | +40.04% |
| 2025 | 2.66 | +52.00% |
| 2024 | 1.75 | -34.21% |
| 2023 | 2.66 | -7.64% |
| 2022 | 2.88 | -40.12% |
| 2021 | 4.81 | -11.42% |
| 2020 | 5.43 | +562.20% |
| 2019 | 0.82 | -26.79% |
| 2018 | 1.12 | -75.38% |
| 2017 | 4.55 | -52.11% |
| 2016 | 9.50 | +98.74% |
| 2015 | 4.78 | -56.31% |
| 2014 | 10.94 | +115.35% |
| 2013 | 5.08 | -3.24% |
| 2012 | 5.25 | -66.98% |
| 2011 | 15.90 | -78.97% |
| 2010 | 75.60 | +1.41% |
| 2009 | 74.55 | +51.06% |
| 2008 | 49.35 | -94.69% |
| 2007 | 929.25 | -42.50% |
| 2006 | 1,615.95 | +42.24% |
| 2005* | 1,136.10 | +12.71% |
* Partial year: the record begins after the start of 2005; return measured from the first available close.
2026 return is year to date.
ALTO daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 3.70 | 3.80 | 3.67 | 3.73 | -0.13% | |
| 3.62 | 3.74 | 3.62 | 3.73 | +2.33% | |
| 3.72 | 3.75 | 3.64 | 3.65 | -2.80% | |
| 3.81 | 3.84 | 3.75 | 3.75 | -1.06% | |
| 3.75 | 3.83 | 3.69 | 3.79 | +0.53% | |
| 3.70 | 3.83 | 3.69 | 3.77 | +2.45% | |
| 3.65 | 3.74 | 3.53 | 3.68 | -0.27% | |
| 3.74 | 3.74 | 3.65 | 3.69 | +1.65% | |
| 3.65 | 3.66 | 3.55 | 3.63 | -1.09% | |
| 3.72 | 3.72 | 3.60 | 3.67 | -1.61% | |
| 3.74 | 3.80 | 3.68 | 3.73 | -0.27% | |
| 3.72 | 3.77 | 3.67 | 3.74 | +0.27% | |
| 3.83 | 3.83 | 3.71 | 3.73 | -2.36% | |
| 3.92 | 3.96 | 3.81 | 3.82 | -2.30% | |
| 3.98 | 4.04 | 3.89 | 3.91 | -2.25% | |
| 4.02 | 4.03 | 3.91 | 4.00 | -0.50% | |
| 4.05 | 4.12 | 4.00 | 4.02 | 0.00% | |
| 4.06 | 4.13 | 3.96 | 4.02 | -1.71% | |
| 4.00 | 4.09 | 3.93 | 4.09 | +3.28% | |
| 3.89 | 4.05 | 3.88 | 3.96 | +1.54% | |
| 4.00 | 4.03 | 3.89 | 3.90 | -1.52% | |
| 3.93 | 4.04 | 3.93 | 3.96 | -1.49% | |
| 4.08 | 4.16 | 3.96 | 4.02 | -2.19% | |
| 4.02 | 4.13 | 3.98 | 4.11 | +1.73% | |
| 4.04 | 4.10 | 3.98 | 4.04 | +0.25% | |
| 4.13 | 4.15 | 4.01 | 4.03 | -1.95% | |
| 4.03 | 4.23 | 4.02 | 4.11 | +2.24% | |
| 3.94 | 4.05 | 3.88 | 4.02 | +1.52% | |
| 4.07 | 4.11 | 3.85 | 3.96 | -2.70% | |
| 4.09 | 4.12 | 3.98 | 4.07 | -0.49% | |
| 4.13 | 4.15 | 3.93 | 4.09 | +0.25% | |
| 3.98 | 4.15 | 3.92 | 4.08 | +2.26% | |
| 4.21 | 4.25 | 3.97 | 3.99 | -4.77% | |
| 4.34 | 4.35 | 4.14 | 4.19 | -4.34% | |
| 4.22 | 4.40 | 4.22 | 4.38 | +4.78% | |
| 4.16 | 4.27 | 4.15 | 4.18 | -0.24% | |
| 4.27 | 4.27 | 4.11 | 4.19 | -1.18% | |
| 4.12 | 4.27 | 4.12 | 4.24 | +0.47% | |
| 4.16 | 4.25 | 4.10 | 4.22 | +0.96% | |
| 4.15 | 4.24 | 4.13 | 4.18 | -0.48% | |
| 4.22 | 4.34 | 4.15 | 4.20 | +3.45% | |
| 4.17 | 4.23 | 4.03 | 4.06 | -2.64% | |
| 4.17 | 4.23 | 4.08 | 4.17 | -1.42% | |
| 4.30 | 4.48 | 4.03 | 4.23 | -3.64% | |
| 4.56 | 4.67 | 4.36 | 4.39 | -2.88% | |
| 4.81 | 4.90 | 4.31 | 4.52 | -10.67% | |
| 5.21 | 5.42 | 5.03 | 5.06 | -4.35% | |
| 4.98 | 5.32 | 4.94 | 5.29 | +8.85% | |
| 4.77 | 4.87 | 4.65 | 4.86 | +2.10% | |
| 4.68 | 4.79 | 4.54 | 4.76 | +3.03% | |
| 4.43 | 4.71 | 4.43 | 4.62 | +5.96% | |
| 4.45 | 4.60 | 4.31 | 4.36 | -2.02% | |
| 4.49 | 4.51 | 4.21 | 4.45 | -1.11% | |
| 4.53 | 4.59 | 4.37 | 4.50 | -3.02% | |
| 4.97 | 4.98 | 4.62 | 4.64 | -6.64% | |
| 5.07 | 5.25 | 4.89 | 4.97 | -2.17% | |
| 4.98 | 5.23 | 4.89 | 5.08 | +2.01% | |
| 5.50 | 5.57 | 4.86 | 4.98 | -9.62% | |
| 5.82 | 6.05 | 5.45 | 5.51 | -5.65% | |
| 5.09 | 5.98 | 5.08 | 5.84 | +12.96% | |
| 5.12 | 5.28 | 5.06 | 5.17 | -0.39% | |
| 5.74 | 5.74 | 5.09 | 5.19 | -7.65% | |
| 6.00 | 6.08 | 5.47 | 5.62 | -4.26% | |
| 5.60 | 5.96 | 5.58 | 5.87 | +4.26% | |
| 5.66 | 5.72 | 5.41 | 5.63 | -0.71% | |
| 5.88 | 5.90 | 5.59 | 5.67 | -2.74% | |
| 5.71 | 6.00 | 5.69 | 5.83 | +3.19% | |
| 5.63 | 5.85 | 5.62 | 5.65 | -1.22% | |
| 5.61 | 5.91 | 5.50 | 5.72 | +2.88% | |
| 6.08 | 6.08 | 5.52 | 5.56 | -7.02% | |
| 5.65 | 6.11 | 5.63 | 5.98 | +4.91% | |
| 5.38 | 5.71 | 5.36 | 5.70 | +6.54% | |
| 5.16 | 5.42 | 5.08 | 5.35 | +3.08% | |
| 4.97 | 5.23 | 4.92 | 5.19 | +4.22% | |
| 5.08 | 5.11 | 4.89 | 4.98 | -1.39% | |
| 5.04 | 5.13 | 4.85 | 5.05 | -1.17% | |
| 5.04 | 5.29 | 4.96 | 5.11 | -2.11% | |
| 5.09 | 5.28 | 5.02 | 5.22 | +3.98% | |
| 5.00 | 5.10 | 4.81 | 5.02 | +1.41% | |
| 4.91 | 5.16 | 4.81 | 4.95 | +2.27% | |
| 5.50 | 5.58 | 4.82 | 4.84 | -12.64% | |
| 5.72 | 5.78 | 5.47 | 5.54 | -2.81% | |
| 5.69 | 5.85 | 5.68 | 5.70 | +0.88% | |
| 5.73 | 5.73 | 5.51 | 5.65 | -0.18% | |
| 5.39 | 5.88 | 5.33 | 5.66 | +7.60% | |
| 5.63 | 5.67 | 5.20 | 5.26 | -6.57% | |
| 5.58 | 5.96 | 5.50 | 5.63 | +3.68% | |
| 5.45 | 5.47 | 5.23 | 5.43 | -1.63% | |
| 5.50 | 5.75 | 5.45 | 5.52 | -0.18% | |
| 5.70 | 5.79 | 5.51 | 5.53 | -2.47% | |
| 5.72 | 5.90 | 5.58 | 5.67 | -0.70% | |
| 5.50 | 5.93 | 5.40 | 5.71 | +4.77% | |
| 5.21 | 5.52 | 5.12 | 5.45 | +4.61% | |
| 5.33 | 5.40 | 5.20 | 5.21 | -1.70% | |
| 5.29 | 5.46 | 5.09 | 5.30 | +1.53% | |
| 4.76 | 5.41 | 4.70 | 5.22 | +11.06% | |
| 4.54 | 4.76 | 4.50 | 4.70 | +3.07% | |
| 4.61 | 4.71 | 4.48 | 4.56 | -2.36% | |
| 4.72 | 4.78 | 4.59 | 4.67 | -1.06% | |
| 4.67 | 4.80 | 4.52 | 4.72 | +0.43% | |
| 4.63 | 4.82 | 4.54 | 4.70 | +0.64% | |
| 4.84 | 4.85 | 4.53 | 4.67 | +0.21% | |
| 4.64 | 4.80 | 4.63 | 4.66 | +1.53% | |
| 4.65 | 4.70 | 4.44 | 4.59 | -0.65% | |
| 4.85 | 4.97 | 4.48 | 4.62 | -5.71% | |
| 4.67 | 4.98 | 4.60 | 4.90 | +9.87% | |
| 4.55 | 4.75 | 4.30 | 4.46 | -1.76% | |
| 5.40 | 5.52 | 4.44 | 4.54 | -18.35% | |
| 5.94 | 5.94 | 5.49 | 5.56 | -7.18% | |
| 5.58 | 6.00 | 5.47 | 5.99 | +9.51% | |
| 5.31 | 5.64 | 5.25 | 5.47 | +0.74% | |
| 5.53 | 5.60 | 5.20 | 5.43 | -1.63% | |
| 5.30 | 5.53 | 5.30 | 5.52 | +3.95% | |
| 5.28 | 5.32 | 5.04 | 5.31 | +0.57% | |
| 5.47 | 5.57 | 5.22 | 5.28 | -3.83% | |
| 5.34 | 5.58 | 5.25 | 5.49 | +3.20% | |
| 5.33 | 5.36 | 5.10 | 5.32 | +0.19% | |
| 5.15 | 5.35 | 5.09 | 5.31 | +2.71% | |
| 5.00 | 5.21 | 4.98 | 5.17 | +4.87% | |
| 4.92 | 5.11 | 4.89 | 4.93 | +0.82% | |
| 4.95 | 5.04 | 4.88 | 4.89 | -1.01% | |
| 5.08 | 5.11 | 4.75 | 4.94 | 0.00% | |
| 4.88 | 5.03 | 4.88 | 4.94 | +0.82% | |
| 4.88 | 4.91 | 4.70 | 4.90 | +0.62% | |
| 5.10 | 5.10 | 4.80 | 4.87 | -4.51% | |
| 4.80 | 5.25 | 4.75 | 5.10 | +6.25% | |
| 4.96 | 5.10 | 4.79 | 4.80 | -1.44% | |
| 4.43 | 4.88 | 4.40 | 4.87 | +11.44% | |
| 4.59 | 4.59 | 4.34 | 4.37 | -0.91% | |
| 4.58 | 4.64 | 4.36 | 4.41 | -3.71% | |
| 4.73 | 4.73 | 4.34 | 4.58 | -1.93% | |
| 4.71 | 4.72 | 4.47 | 4.67 | -2.51% | |
| 4.85 | 5.02 | 4.70 | 4.79 | -1.03% | |
| 4.61 | 5.06 | 4.56 | 4.84 | +5.45% | |
| 4.52 | 4.74 | 4.45 | 4.59 | +1.77% | |
| 4.45 | 4.59 | 4.37 | 4.51 | +1.81% | |
| 4.33 | 4.45 | 4.31 | 4.43 | +1.14% | |
| 4.29 | 4.40 | 4.21 | 4.38 | +1.62% | |
| 4.12 | 4.40 | 4.08 | 4.31 | +4.36% | |
| 4.19 | 4.27 | 4.03 | 4.13 | -0.72% | |
| 4.55 | 4.55 | 4.06 | 4.16 | -7.96% | |
| 4.55 | 4.63 | 4.46 | 4.52 | -1.53% | |
| 4.70 | 4.74 | 4.56 | 4.59 | -2.55% | |
| 4.32 | 4.77 | 4.25 | 4.71 | +9.28% | |
| 4.61 | 4.65 | 4.27 | 4.31 | -7.51% | |
| 4.80 | 4.80 | 4.54 | 4.66 | -1.89% | |
| 4.60 | 4.89 | 4.45 | 4.75 | +3.71% | |
| 4.55 | 4.64 | 4.40 | 4.58 | -0.43% | |
| 4.37 | 4.65 | 4.26 | 4.60 | +5.26% | |
| 4.37 | 4.53 | 4.23 | 4.37 | -0.46% | |
| 4.04 | 4.53 | 4.02 | 4.39 | +9.20% | |
| 3.55 | 4.20 | 3.12 | 4.02 | +54.62% | |
| 2.66 | 2.71 | 2.53 | 2.60 | 0.00% | |
| 2.45 | 2.72 | 2.41 | 2.60 | +3.17% | |
| 2.25 | 2.54 | 2.25 | 2.52 | +10.53% | |
| 2.31 | 2.36 | 2.25 | 2.28 | -3.39% | |
| 2.36 | 2.39 | 2.30 | 2.36 | -0.84% | |
| 2.41 | 2.45 | 2.34 | 2.38 | -1.24% | |
| 2.38 | 2.43 | 2.36 | 2.41 | +1.26% | |
| 2.41 | 2.41 | 2.35 | 2.38 | -1.65% | |
| 2.49 | 2.51 | 2.38 | 2.42 | -3.59% | |
| 2.49 | 2.53 | 2.42 | 2.51 | +0.40% | |
| 2.54 | 2.60 | 2.47 | 2.50 | -1.57% | |
| 2.65 | 2.66 | 2.52 | 2.54 | -5.22% | |
| 2.64 | 2.74 | 2.60 | 2.68 | +1.52% | |
| 2.78 | 2.78 | 2.62 | 2.64 | -4.69% | |
| 2.78 | 2.79 | 2.61 | 2.77 | +0.73% | |
| 2.76 | 2.80 | 2.58 | 2.75 | -0.72% | |
| 2.74 | 2.87 | 2.69 | 2.77 | +1.84% | |
| 2.54 | 2.80 | 2.54 | 2.72 | +7.94% | |
| 2.57 | 2.70 | 2.51 | 2.52 | -4.55% | |
| 2.83 | 2.83 | 2.55 | 2.64 | -5.71% | |
| 2.59 | 2.85 | 2.50 | 2.80 | +8.95% | |
| 2.49 | 2.64 | 2.43 | 2.57 | +2.80% | |
| 2.59 | 2.64 | 2.45 | 2.50 | -2.72% | |
| 2.63 | 2.74 | 2.52 | 2.57 | -1.53% | |
| 2.70 | 2.91 | 2.50 | 2.61 | -0.38% | |
| 2.68 | 2.77 | 2.59 | 2.62 | -1.87% | |
| 2.85 | 2.87 | 2.66 | 2.67 | -5.32% | |
| 2.90 | 2.92 | 2.75 | 2.82 | -2.42% | |
| 2.90 | 2.96 | 2.84 | 2.89 | +0.70% | |
| 2.78 | 2.95 | 2.76 | 2.87 | +3.24% | |
| 2.68 | 2.81 | 2.61 | 2.78 | +2.96% | |
| 2.62 | 2.74 | 2.57 | 2.70 | +2.66% | |
| 2.70 | 2.75 | 2.60 | 2.63 | -3.31% | |
| 2.65 | 2.76 | 2.60 | 2.72 | +3.82% | |
| 2.54 | 2.66 | 2.50 | 2.62 | +3.15% | |
| 2.41 | 2.62 | 2.35 | 2.54 | +6.28% | |
| 2.40 | 2.48 | 2.38 | 2.39 | -0.42% | |
| 2.39 | 2.54 | 2.39 | 2.40 | 0.00% | |
| 2.42 | 2.51 | 2.39 | 2.40 | -2.04% | |
| 2.47 | 2.52 | 2.34 | 2.45 | -1.21% | |
| 2.65 | 2.77 | 2.43 | 2.48 | -6.77% | |
| 2.87 | 2.92 | 2.57 | 2.66 | -7.64% | |
| 2.91 | 2.97 | 2.85 | 2.88 | -1.03% | |
| 2.92 | 3.00 | 2.86 | 2.91 | +2.46% | |
| 3.03 | 3.03 | 2.77 | 2.84 | -6.27% | |
| 3.07 | 3.15 | 3.02 | 3.03 | -1.62% | |
| 2.98 | 3.18 | 2.94 | 3.08 | +3.70% | |
| 3.03 | 3.09 | 2.91 | 2.97 | -1.33% | |
| 2.97 | 3.11 | 2.94 | 3.01 | +1.69% | |
| 2.97 | 3.05 | 2.86 | 2.96 | 0.00% | |
| 2.60 | 2.97 | 2.53 | 2.96 | +13.41% | |
| 2.46 | 2.68 | 2.41 | 2.61 | +6.53% | |
| 2.56 | 2.63 | 2.34 | 2.45 | -4.30% | |
| 2.50 | 2.60 | 2.39 | 2.56 | +2.40% | |
| 2.55 | 2.60 | 2.45 | 2.50 | -2.34% | |
| 2.50 | 2.64 | 2.44 | 2.56 | +2.40% | |
| 2.57 | 2.58 | 2.44 | 2.50 | -2.72% | |
| 2.34 | 2.67 | 2.28 | 2.57 | +8.44% | |
| 2.51 | 2.56 | 2.33 | 2.37 | -5.58% | |
| 2.81 | 2.88 | 2.47 | 2.51 | -10.04% | |
| 2.84 | 2.92 | 2.75 | 2.79 | -0.36% | |
| 2.50 | 2.83 | 2.50 | 2.80 | +9.37% | |
| 2.64 | 2.65 | 2.48 | 2.56 | -2.66% | |
| 2.53 | 2.72 | 2.47 | 2.63 | +3.14% | |
| 2.45 | 2.57 | 2.42 | 2.55 | +4.08% | |
| 2.49 | 2.62 | 2.35 | 2.45 | 0.00% | |
| 2.15 | 2.52 | 2.11 | 2.45 | +13.95% | |
| 2.12 | 2.28 | 2.08 | 2.15 | +2.38% | |
| 2.20 | 2.25 | 2.06 | 2.10 | -2.78% | |
| 2.20 | 2.31 | 2.15 | 2.16 | +0.93% | |
| 2.02 | 2.19 | 2.00 | 2.14 | +4.90% | |
| 1.96 | 2.06 | 1.87 | 2.04 | +2.51% | |
| 2.09 | 2.12 | 1.92 | 1.99 | -2.45% | |
| 1.95 | 2.06 | 1.87 | 2.04 | +5.15% | |
| 1.91 | 2.04 | 1.85 | 1.94 | +1.57% | |
| 1.80 | 2.00 | 1.74 | 1.91 | +7.30% | |
| 1.60 | 1.85 | 1.50 | 1.78 | +9.88% | |
| 1.42 | 1.67 | 1.40 | 1.62 | +17.39% | |
| 1.44 | 1.49 | 1.30 | 1.38 | -2.82% | |
| 1.53 | 1.60 | 1.37 | 1.42 | +22.41% | |
| 1.13 | 1.20 | 1.10 | 1.16 | +2.65% | |
| 1.02 | 1.15 | 1.01 | 1.13 | +8.65% | |
| 1.00 | 1.04 | 0.99 | 1.04 | +2.97% | |
| 1.03 | 1.03 | 1.00 | 1.01 | -3.81% | |
| 1.02 | 1.05 | 1.01 | 1.05 | +2.94% | |
| 1.06 | 1.07 | 1.01 | 1.02 | -3.77% | |
| 1.06 | 1.08 | 1.05 | 1.06 | 0.00% | |
| 1.10 | 1.11 | 1.05 | 1.06 | -2.75% | |
| 1.08 | 1.12 | 1.08 | 1.09 | +0.93% | |
| 1.08 | 1.10 | 1.06 | 1.08 | 0.00% | |
| 1.11 | 1.12 | 1.07 | 1.08 | -2.70% | |
| 1.11 | 1.13 | 1.11 | 1.11 | -1.77% | |
| 1.08 | 1.17 | 1.08 | 1.13 | +4.63% | |
| 1.13 | 1.16 | 1.07 | 1.08 | -5.26% | |
| 1.20 | 1.21 | 1.12 | 1.14 | -5.79% | |
| 1.16 | 1.21 | 1.15 | 1.21 | +8.04% | |
| 1.08 | 1.12 | 1.08 | 1.12 | +1.82% | |
| 1.14 | 1.14 | 1.07 | 1.10 | -1.79% | |
| 1.13 | 1.15 | 1.11 | 1.12 | 0.00% | |
| 1.15 | 1.17 | 1.10 | 1.12 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the ALTO chart for longer ranges.