CLWT vs ERII

For growth investors, Energy Recovery, Inc.

(ERII) is the stronger pick with -7. 1% revenue growth year-over-year, versus -14. 3% for Euro Tech Holdings Company Limited (CLWT). Euro Tech Holdings Company Limited (CLWT) offers the better valuation at 13. 2x trailing P/E, making it the more compelling value choice. Analysts rate Energy Recovery, Inc. (ERII) 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.

On trailing P/E, Euro Tech Holdings Company Limited (CLWT) is the cheapest at 13.

2x versus Energy Recovery, Inc. at 22. 5x.

Over the past 5 years, Euro Tech Holdings Company Limited (CLWT) delivered a total return of -28.

1%, compared to -54. 3% for Energy Recovery, Inc. (ERII). Over 10 years, the gap is even starker: CLWT returned +164. 8% versus ERII's -11. 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), Euro Tech Holdings Company Limited (CLWT) is the lower-risk stock at 0.

37β versus Energy Recovery, Inc. 's 1. 53β — meaning ERII is approximately 308% more volatile than CLWT relative to the S&P 500. On balance sheet safety, Euro Tech Holdings Company Limited (CLWT) carries a lower debt/equity ratio of 1% versus 5% for Energy Recovery, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Energy Recovery, Inc.

(ERII) is pulling ahead at -7. 1% versus -14. 3% for Euro Tech Holdings Company Limited (CLWT). On earnings-per-share growth, the picture is similar: Energy Recovery, Inc. grew EPS 5. 0% year-over-year, compared to -60. 4% for Euro Tech Holdings Company Limited. Over a 3-year CAGR, ERII leads at 2. 4% 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.

Energy Recovery, Inc.

(ERII) is the more profitable company, earning 17. 0% net margin versus 4. 8% for Euro Tech Holdings Company Limited — meaning it keeps 17. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ERII leads at 18. 2% versus 2. 5% for CLWT. At the gross margin level — before operating expenses — ERII leads at 65. 2%, 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.

In this comparison, CLWT (6.

4% yield) pays a dividend. ERII does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Euro Tech Holdings Company Limited (CLWT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

37), 6. 4% yield, +164. 8% 10Y return). Energy Recovery, Inc. (ERII) carries a higher beta of 1. 53 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (CLWT: +164. 8%, ERII: -11. 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.

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

In terms of investment character: CLWT is a small-cap deep-value stock; ERII is a small-cap quality compounder stock. CLWT pays a dividend while ERII does not, making them suitable for different income and tax situations. 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.