SGD vs GREE vs MARA vs RIOT

For growth investors, Riot Platforms, Inc.

(RIOT) is the stronger pick with 71. 9% 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, Riot Platforms, Inc.

(RIOT) delivered a total return of -27. 8%, compared to -99. 9% for Safe and Green Development Corporation (SGD). Over 10 years, the gap is even starker: RIOT returned +787. 3% versus SGD's -99. 9%. 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), Safe and Green Development Corporation (SGD) is the lower-risk stock at 1.

69β versus Riot Platforms, Inc. 's 3. 87β — meaning RIOT is approximately 129% more volatile than SGD relative to the S&P 500. On balance sheet safety, Riot Platforms, Inc. (RIOT) carries a lower debt/equity ratio of 10% versus 12% for Safe and Green Development Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Riot Platforms, Inc.

(RIOT) is pulling ahead at 71. 9% versus -15. 4% for Greenidge Generation Holdings Inc. (GREE). On earnings-per-share growth, the picture is similar: Greenidge Generation Holdings Inc. grew EPS 57. 6% year-over-year, compared to -21. 2% for Safe and Green Development Corporation. 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.

Greenidge Generation Holdings Inc.

(GREE) is the more profitable company, earning -33. 2% net margin versus -42. 9% for Safe and Green Development Corporation — meaning it keeps -33. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: GREE leads at -19. 2% versus -31. 6% for SGD. 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, Riot Platforms, Inc.

(RIOT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+787. 3% 10Y return). Greenidge Generation Holdings Inc. (GREE) carries a higher beta of 3. 33 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (RIOT: +787. 3%, GREE: -62. 9%), 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 (SGD (Real Estate) and GREE (Financial Services) and MARA (Financial Services) and RIOT (Financial Services)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

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