TSSI vs CLFD vs ERII

For growth investors, TSS, Inc.

(TSSI) is the stronger pick with 65. 9% revenue growth year-over-year, versus -7. 1% for Energy Recovery, Inc. (ERII). Energy Recovery, Inc. (ERII) offers the better valuation at 27. 6x trailing P/E (28. 2x forward), making it the more compelling value choice. Analysts rate Clearfield, Inc. (CLFD) a "Buy" — based on 8 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, Energy Recovery, Inc.

(ERII) is the cheapest at 27. 6x versus TSS, Inc. at 28. 0x. On forward P/E, Energy Recovery, Inc. is actually cheaper at 28. 2x.

Over the past 5 years, TSS, Inc.

(TSSI) delivered a total return of +29. 2%, compared to -43. 0% for Energy Recovery, Inc. (ERII). Over 10 years, the gap is even starker: TSSI returned +116. 5% versus ERII's +2. 7%. 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), Energy Recovery, Inc.

(ERII) is the lower-risk stock at 1. 53β versus TSS, Inc. 's 3. 50β — meaning TSSI is approximately 129% more volatile than ERII relative to the S&P 500. On balance sheet safety, Clearfield, Inc. (CLFD) carries a lower debt/equity ratio of 3% versus 54% for TSS, Inc. — giving it more financial flexibility in a downturn.

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

(TSSI) is pulling ahead at 65. 9% versus -7. 1% for Energy Recovery, Inc. (ERII). On earnings-per-share growth, the picture is similar: TSS, Inc. grew EPS 154. 2% year-over-year, compared to 5. 0% for Energy Recovery, Inc.. Over a 3-year CAGR, TSSI leads at 100. 2% 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 -5. 4% for Clearfield, Inc. — 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 1. 4% for CLFD. 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.

On forward earnings alone, Energy Recovery, Inc.

(ERII) trades at 28. 2x forward P/E versus 58. 2x for Clearfield, Inc. — 30. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CLFD: 42. 0% to $43. 00.

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, Energy Recovery, Inc.

(ERII) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding. TSS, Inc. (TSSI) carries a higher beta of 3. 50 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (ERII: +2. 7%, TSSI: +116. 5%), 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 (TSSI (Technology) and CLFD (Technology) and ERII (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: TSSI is a small-cap high-growth stock; CLFD is a small-cap high-growth stock; ERII 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.