SCWO vs PESI vs BWXT vs CLNE

For growth investors, BWX Technologies, Inc.

(BWXT) is the stronger pick with 18. 3% revenue growth year-over-year, versus -40. 1% for 374Water, Inc. (SCWO). BWX Technologies, Inc. (BWXT) offers the better valuation at 58. 4x trailing P/E (45. 5x forward), making it the more compelling value choice. Analysts rate BWX Technologies, Inc. (BWXT) a "Buy" — based on 16 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, BWX Technologies, Inc.

(BWXT) delivered a total return of +224. 9%, compared to -73. 8% for Clean Energy Fuels Corp. (CLNE). Over 10 years, the gap is even starker: SCWO returned +1608% versus CLNE's -26. 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), Clean Energy Fuels Corp.

(CLNE) is the lower-risk stock at 1. 19β versus 374Water, Inc. 's 2. 58β — meaning SCWO is approximately 117% more volatile than CLNE relative to the S&P 500. On balance sheet safety, 374Water, Inc. (SCWO) carries a lower debt/equity ratio of 4% versus 163% for BWX Technologies, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), BWX Technologies, Inc.

(BWXT) is pulling ahead at 18. 3% versus -40. 1% for 374Water, Inc. (SCWO). On earnings-per-share growth, the picture is similar: Perma-Fix Environmental Services, Inc. grew EPS 43. 6% year-over-year, compared to -173. 0% for Clean Energy Fuels Corp.. Over a 3-year CAGR, SCWO leads at 110. 0% 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.

BWX Technologies, Inc.

(BWXT) is the more profitable company, earning 10. 3% net margin versus -27. 9% for 374Water, Inc. — meaning it keeps 10. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: BWXT leads at 10. 1% versus -28. 7% for SCWO. At the gross margin level — before operating expenses — BWXT leads at 22. 9%, 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.

Analyst consensus price targets imply the most upside for PESI: 61.

1% to $18. 00.

In this comparison, BWXT (0.

5% yield) pays a dividend. SCWO, PESI, CLNE do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, 374Water, Inc.

(SCWO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1608% 10Y return). Perma-Fix Environmental Services, Inc. (PESI) carries a higher beta of 1. 85 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SCWO: +1608%, PESI: +178. 6%), 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 (SCWO (Industrials) and PESI (Industrials) and BWXT (Industrials) and CLNE (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: SCWO is a small-cap quality compounder stock; PESI is a small-cap quality compounder stock; BWXT is a mid-cap high-growth stock; CLNE 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.