TANH vs CODA vs CBAT vs NRGV vs GPRE

For growth investors, Energy Vault Holdings, Inc.

(NRGV) is the stronger pick with 340. 9% revenue growth year-over-year, versus -14. 9% for Green Plains Inc. (GPRE). CBAK Energy Technology, Inc. (CBAT) offers the better valuation at 6. 0x trailing P/E, making it the more compelling value choice. Analysts rate Coda Octopus Group, Inc. (CODA) a "Buy" — based on 1 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.

On trailing P/E, CBAK Energy Technology, Inc.

(CBAT) is the cheapest at 6. 0x versus Coda Octopus Group, Inc. at 32. 2x. On forward P/E, Coda Octopus Group, Inc. is actually cheaper at 22. 5x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Coda Octopus Group, Inc.

(CODA) delivered a total return of +49. 7%, compared to -100. 0% for Tantech Holdings Ltd (TANH). Over 10 years, the gap is even starker: CODA returned +844. 4% versus TANH's -100. 0%. 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), Tantech Holdings Ltd (TANH) is the lower-risk stock at 0.

91β versus Energy Vault Holdings, Inc. 's 3. 08β — meaning NRGV is approximately 237% more volatile than TANH relative to the S&P 500. On balance sheet safety, Coda Octopus Group, Inc. (CODA) carries a lower debt/equity ratio of 1% versus 107% for Energy Vault Holdings, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Energy Vault Holdings, Inc.

(NRGV) is pulling ahead at 340. 9% versus -14. 9% for Green Plains Inc. (GPRE). On earnings-per-share growth, the picture is similar: CBAK Energy Technology, Inc. grew EPS 574. 5% year-over-year, compared to -107. 1% for Tantech Holdings Ltd. Over a 3-year CAGR, CBAT leads at 49. 7% 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.

Coda Octopus Group, Inc.

(CODA) is the more profitable company, earning 15. 5% net margin versus -50. 9% for Energy Vault Holdings, Inc. — meaning it keeps 15. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CODA leads at 17. 1% versus -36. 5% for NRGV. At the gross margin level — before operating expenses — CODA leads at 66. 5%, 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.

On forward earnings alone, Coda Octopus Group, Inc.

(CODA) trades at 22. 5x forward P/E versus 46. 6x for Green Plains Inc. — 24. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CODA: 17. 6% to $14. 00.

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, Coda Octopus Group, Inc.

(CODA) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 00), +844. 4% 10Y return). Energy Vault Holdings, Inc. (NRGV) carries a higher beta of 3. 08 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (CODA: +844. 4%, NRGV: -57. 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 (TANH (Consumer Defensive) and CODA (Industrials) and CBAT (Industrials) and NRGV (Utilities) and GPRE (Basic Materials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: TANH is a small-cap quality compounder stock; CODA is a small-cap high-growth stock; CBAT is a small-cap deep-value stock; NRGV is a small-cap high-growth stock; GPRE is a small-cap quality compounder stock. 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.