Alto Ingredients (ALTO) vs Montauk Renewables (MNTK)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Alto Ingredients (ALTO) has outperformed Montauk Renewables (MNTK) over the past year, gaining 230.1% versus a gain of 17.6%. Over five years, ALTO leads with a -33.2% price change compared with -77.4% for MNTK. Montauk Renewables is the larger company by market cap ($360.1 million vs $288.9 million), about 1.2 times the size.
On valuation, Montauk Renewables trades at a lower forward P/E (8.2x vs 11.3x for Alto Ingredients).
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | ALTO | MNTK |
|---|---|---|
| Share price | $3.73 | $2.53 |
| Market cap | $288.94M | $360.12M |
| 1-day change | -0.13% | -7.66% |
| YTD return | +29.51% | +64.07% |
| 1-year return | +230.09% | +17.60% |
| 5-year return | -33.15% | -77.39% |
| P/E ratio (TTM) | 5.48 | 42.17 |
| Forward P/E | 11.29 | 8.25 |
| EPS (TTM) | $0.68 | $0.06 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $6.11 | $3.28 |
| 52-week low | $0.99 | $1.07 |
| Distance from 52-week high | -39.03% | -22.87% |
| Analyst consensus | strong_buy | none |
| Avg. price target upside | +123.62% | -32.81% |
| Average volume | 1.73M | 429.28K |
| Shares outstanding | 77.57M | 142.34M |
| Employees | 390 | 189 |
| Sector | Industrials | Utilities |
| Industry | Major Chemicals | Natural Gas Distribution |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- ALTO has outperformed MNTK by 212.5 percentage points over the past year.
- Montauk Renewables trades at a higher earnings multiple (42.2x vs 5.5x trailing P/E).
- The two companies sit in different sectors: Alto Ingredients in Industrials and Montauk Renewables in Utilities.
About Alto Ingredients
ALTO stock →Alto Ingredients, Inc. produces, distributes, and markets specialty alcohols, renewable fuel, and essential ingredients in the United States.
Industrials · Major Chemicals · 390 employees
About Montauk Renewables
MNTK stock →Montauk Renewables, Inc., a renewable energy company, engages in recovery and processing of biogas from landfills and other non-fossil fuel sources. It operates in two segments, Renewable Natural Gas and Renewable Electricity Generation.
Utilities · Natural Gas Distribution · 189 employees
ALTO vs MNTK FAQ
Which is bigger, Alto Ingredients or Montauk Renewables?
Montauk Renewables (MNTK) is larger, with a market capitalization of $360.12M compared with $288.94M for Alto Ingredients (ALTO).
Which stock has performed better over the past year, ALTO or MNTK?
ALTO returned +230.09% over the past 12 months, compared with +17.60% for MNTK (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, ALTO or MNTK?
ALTO has the lower trailing P/E at 5.5, versus 42.2 for MNTK. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are Alto Ingredients and Montauk Renewables in the same industry?
No. Alto Ingredients is in the Industrials sector, while Montauk Renewables is in Utilities.