AMTX vs GPRE

For growth investors, Green Plains Inc.

(GPRE) is the stronger pick with -14. 9% revenue growth year-over-year, versus -22. 3% for Aemetis, Inc. (AMTX). Analysts rate Aemetis, Inc. (AMTX) a "Buy" — based on 7 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

Over the past 5 years, Green Plains Inc.

(GPRE) delivered a total return of -47. 0%, compared to -80. 5% for Aemetis, Inc. (AMTX). Over 10 years, the gap is even starker: GPRE returned +17. 1% versus AMTX's +12. 1%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Green Plains Inc.

(GPRE) is the lower-risk stock at 1. 22β versus Aemetis, Inc. 's 1. 46β — meaning AMTX is approximately 20% more volatile than GPRE relative to the S&P 500.

By revenue growth (latest reported year), Green Plains Inc.

(GPRE) is pulling ahead at -14. 9% versus -22. 3% for Aemetis, Inc. (AMTX). On earnings-per-share growth, the picture is similar: Aemetis, Inc. grew EPS 33. 0% year-over-year, compared to -39. 5% for Green Plains Inc.. Over a 3-year CAGR, AMTX leads at -6. 8% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Green Plains Inc.

(GPRE) is the more profitable company, earning -5. 8% net margin versus -37. 0% for Aemetis, Inc. — meaning it keeps -5. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: GPRE leads at -4. 0% versus -17. 9% for AMTX. At the gross margin level — before operating expenses — GPRE leads at 1. 8%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

Analyst consensus price targets imply the most upside for GPRE: -18.

7% to $13. 80.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Green Plains Inc.

(GPRE) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 22)). Both have compounded well over 10 years (GPRE: +17. 1%, AMTX: +12. 1%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (AMTX (Energy) and GPRE (Basic Materials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.