ASTI vs SPWR

For growth investors, SunPower Inc.

(SPWR) is the stronger pick with 2. 9% revenue growth year-over-year, versus -100. 0% for Ascent Solar Technologies, Inc. Common Stock (ASTI). Analysts rate SunPower Inc. (SPWR) a "Hold" — based on 45 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, SunPower Inc.

(SPWR) delivered a total return of -81. 3%, compared to -100. 0% for Ascent Solar Technologies, Inc. Common Stock (ASTI). Over 10 years, the gap is even starker: SPWR returned -80. 0% versus ASTI'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), SunPower Inc.

(SPWR) is the lower-risk stock at 2. 15β versus Ascent Solar Technologies, Inc. Common Stock's 4. 45β — meaning ASTI is approximately 107% more volatile than SPWR relative to the S&P 500.

By revenue growth (latest reported year), SunPower Inc.

(SPWR) is pulling ahead at 2. 9% versus -100. 0% for Ascent Solar Technologies, Inc. Common Stock (ASTI). On earnings-per-share growth, the picture is similar: Ascent Solar Technologies, Inc. Common Stock grew EPS 70. 2% year-over-year, compared to 0. 0% for SunPower Inc.. 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.

Ascent Solar Technologies, Inc.

Common Stock (ASTI) is the more profitable company, earning 0. 0% net margin versus -10. 5% for SunPower Inc. — meaning it keeps 0. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ASTI leads at 0. 0% versus -2. 0% for SPWR. At the gross margin level — before operating expenses — SPWR leads at 48. 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.

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, SunPower Inc.

(SPWR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding. Ascent Solar Technologies, Inc. Common Stock (ASTI) carries a higher beta of 4. 45 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SPWR: -80. 0%, ASTI: -100. 0%), 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.

Both stocks operate in the Energy sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

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.