ENS vs CLFD vs SBS vs GNRC vs AMTX

For growth investors, Clearfield, Inc.

(CLFD) is the stronger pick with 19. 6% revenue growth year-over-year, versus -22. 3% for Aemetis, Inc. (AMTX). Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) offers the better valuation at 13. 0x trailing P/E (0. 7x forward), making it the more compelling value choice. Analysts rate EnerSys (ENS) 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, Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is the cheapest at 13.

0x versus Generac Holdings Inc. at 99. 2x. On forward P/E, Companhia de Saneamento Básico do Estado de São Paulo - SABESP is actually cheaper at 0. 7x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Companhia de Saneamento Básico do Estado de São Paulo - SABESP wins at 0. 01x versus EnerSys's 0. 94x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) delivered a total return of +415.

1%, compared to -76. 1% for Aemetis, Inc. (AMTX). Over 10 years, the gap is even starker: GNRC returned +666. 1% versus AMTX's +31. 1%. 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), Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is the lower-risk stock at 0.

82β versus Clearfield, Inc. 's 1. 79β — meaning CLFD is approximately 118% more volatile than SBS relative to the S&P 500. On balance sheet safety, Clearfield, Inc. (CLFD) carries a lower debt/equity ratio of 3% versus 94% for Companhia de Saneamento Básico do Estado de São Paulo - SABESP — giving it more financial flexibility in a downturn.

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

(CLFD) is pulling ahead at 19. 6% versus -22. 3% for Aemetis, Inc. (AMTX). On earnings-per-share growth, the picture is similar: EnerSys grew EPS 38. 3% year-over-year, compared to -50. 1% for Generac Holdings Inc.. Over a 3-year CAGR, SBS leads at 19. 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.

Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is the more profitable company, earning 22.

2% net margin versus -37. 0% for Aemetis, Inc. — meaning it keeps 22. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SBS leads at 32. 2% versus -17. 9% for AMTX. At the gross margin level — before operating expenses — GNRC leads at 38. 3%, 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.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is the more undervalued stock at a PEG of 0. 01x versus EnerSys's 0. 94x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) trades at 0. 7x forward P/E versus 72. 1x for Clearfield, Inc. — 71. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for SBS: 273. 5% to $23. 79.

In this comparison, SBS (2.

1% yield), ENS (0. 4% yield) pay a dividend. CLFD, GNRC, AMTX do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

82), 2. 1% yield, +528. 6% 10Y return). Clearfield, Inc. (CLFD) carries a higher beta of 1. 79 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SBS: +528. 6%, CLFD: +106. 7%), 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 (ENS (Industrials) and CLFD (Technology) and SBS (Utilities) and GNRC (Industrials) and AMTX (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: ENS is a small-cap quality compounder stock; CLFD is a small-cap high-growth stock; SBS is a mid-cap deep-value stock; GNRC is a mid-cap quality compounder stock; AMTX is a small-cap quality compounder stock. SBS pays a dividend while ENS, CLFD, GNRC, AMTX do 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.