CIG vs ELP vs SBS vs ERJ vs AWK

For growth investors, Embraer S.

A. (ERJ) is the stronger pick with 21. 4% revenue growth year-over-year, versus 3. 3% for Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS). Companhia Paranaense de Energia - COPEL (ELP) offers the better valuation at 3. 0x trailing P/E, making it the more compelling value choice. Analysts rate Companhia Energética de Minas Gerais (CIG) a "Buy" — based on 5 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 Paranaense de Energia - COPEL (ELP) is the cheapest at 3.

0x versus Embraer S. A. at 34. 1x. On forward P/E, Companhia de Saneamento Básico do Estado de São Paulo - SABESP is actually cheaper at 0. 7x — notably different from the trailing picture, reflecting expected earnings growth. 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 American Water Works Company, Inc. 's 2. 63x — 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 -8. 1% for American Water Works Company, Inc. (AWK). Over 10 years, the gap is even starker: SBS returned +528. 6% versus AWK's +100. 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), American Water Works Company, Inc.

(AWK) is the lower-risk stock at -0. 48β versus Embraer S. A. 's 0. 87β — meaning ERJ is approximately -283% more volatile than AWK relative to the S&P 500. On balance sheet safety, Companhia Paranaense de Energia - COPEL (ELP) carries a lower debt/equity ratio of 69% versus 147% for American Water Works Company, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Embraer S.

A. (ERJ) is pulling ahead at 21. 4% versus 3. 3% for Companhia de Saneamento Básico do Estado de São Paulo - SABESP (SBS). On earnings-per-share growth, the picture is similar: Embraer S. A. grew EPS 118. 2% year-over-year, compared to -31. 7% for Companhia Energética de Minas Gerais. 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 5. 5% for Embraer S. A. — meaning it keeps 22. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AWK leads at 36. 6% versus 10. 4% for ERJ. At the gross margin level — before operating expenses — AWK leads at 43. 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 American Water Works Company, Inc. 's 2. 63x. 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 20. 7x for American Water Works Company, Inc. — 20. 1x 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, CIG (11.

5% yield), ELP (4. 3% yield), AWK (2. 6% yield), SBS (2. 1% yield) pay a dividend. ERJ does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, American Water Works Company, Inc.

(AWK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 48), 2. 6% yield, +100. 9% 10Y return). Both have compounded well over 10 years (AWK: +100. 9%, ERJ: +200. 2%), 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 (CIG (Utilities) and ELP (Utilities) and SBS (Utilities) and ERJ (Industrials) and AWK (Utilities)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: CIG is a small-cap deep-value stock; ELP is a small-cap deep-value stock; SBS is a mid-cap deep-value stock; ERJ is a mid-cap high-growth stock; AWK is a mid-cap quality compounder stock. CIG, ELP, SBS, AWK pay a dividend while ERJ 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.