AMPX vs SES

For growth investors, SES AI Corporation (SES) is the stronger pick with 929.

4% revenue growth year-over-year, versus 202. 1% for Amprius Technologies, Inc. (AMPX). Analysts rate Amprius Technologies, Inc. (AMPX) a "Buy" — based on 12 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, Amprius Technologies, Inc.

(AMPX) delivered a total return of +94. 2%, compared to -90. 7% for SES AI Corporation (SES). Over 10 years, the gap is even starker: AMPX returned +94. 2% versus SES's -91. 3%. 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), SES AI Corporation (SES) is the lower-risk stock at 2.

91β versus Amprius Technologies, Inc. 's 3. 05β — meaning AMPX is approximately 5% more volatile than SES relative to the S&P 500. On balance sheet safety, SES AI Corporation (SES) carries a lower debt/equity ratio of 4% versus 38% for Amprius Technologies, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), SES AI Corporation (SES) is pulling ahead at 929.

4% versus 202. 1% for Amprius Technologies, Inc. (AMPX). On earnings-per-share growth, the picture is similar: SES AI Corporation grew EPS 29. 0% year-over-year, compared to 22. 2% for Amprius Technologies, 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.

Amprius Technologies, Inc.

(AMPX) is the more profitable company, earning -60. 3% net margin versus -347. 8% for SES AI Corporation — meaning it keeps -60. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AMPX leads at -63. 9% versus -393. 4% for SES. At the gross margin level — before operating expenses — SES leads at 53. 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.

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, Amprius Technologies, Inc.

(AMPX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding. SES AI Corporation (SES) carries a higher beta of 2. 91 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AMPX: +94. 2%, SES: -91. 3%), 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 (AMPX (Industrials) and SES (Consumer Cyclical)), 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.