BNRG vs GREE vs MARA vs STEM

For growth investors, Marathon Digital Holdings, Inc.

(MARA) is the stronger pick with 38. 2% revenue growth year-over-year, versus -15. 4% for Greenidge Generation Holdings Inc. (GREE). Analysts rate Marathon Digital Holdings, Inc. (MARA) a "Buy" — based on 19 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, Marathon Digital Holdings, Inc.

(MARA) delivered a total return of -59. 5%, compared to -100. 0% for Brenmiller Energy Ltd (BNRG). Over 10 years, the gap is even starker: MARA returned -51. 6% versus BNRG'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), Brenmiller Energy Ltd (BNRG) is the lower-risk stock at 1.

75β versus Stem, Inc. 's 3. 66β — meaning STEM is approximately 109% more volatile than BNRG relative to the S&P 500. On balance sheet safety, Marathon Digital Holdings, Inc. (MARA) carries a lower debt/equity ratio of 105% versus 167% for Brenmiller Energy Ltd — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Marathon Digital Holdings, Inc.

(MARA) is pulling ahead at 38. 2% versus -15. 4% for Greenidge Generation Holdings Inc. (GREE). On earnings-per-share growth, the picture is similar: Stem, Inc. grew EPS 91. 3% year-over-year, compared to -532. 8% for Brenmiller Energy Ltd. Over a 3-year CAGR, STEM leads at -24. 5% 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.

Stem, Inc.

(STEM) is the more profitable company, earning 88. 2% net margin versus -35. 9% for Brenmiller Energy Ltd — meaning it keeps 88. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: GREE leads at -19. 2% versus -32. 9% for BNRG. At the gross margin level — before operating expenses — GREE leads at 79. 7%, 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.

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, Brenmiller Energy Ltd (BNRG) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding.

Stem, Inc. (STEM) carries a higher beta of 3. 66 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (BNRG: -100. 0%, STEM: -95. 5%), 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 (BNRG (Utilities) and GREE (Financial Services) and MARA (Financial Services) and STEM (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: BNRG is a small-cap quality compounder stock; GREE is a small-cap quality compounder stock; MARA is a small-cap high-growth stock; STEM 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.