CEPU vs AES vs NRG vs VST

For growth investors, NRG Energy, Inc.

(NRG) is the stronger pick with 9. 2% revenue growth year-over-year, versus -12. 4% for Vistra Corp. (VST). The AES Corporation (AES) offers the better valuation at 11. 3x trailing P/E (6. 2x forward), making it the more compelling value choice. Analysts rate NRG Energy, Inc. (NRG) a "Buy" — based on 26 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, The AES Corporation (AES) is the cheapest at 11.

3x versus Vistra Corp. at 69. 7x. On forward P/E, Central Puerto S. A. is actually cheaper at 0. 0x — 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: Central Puerto S. A. wins at 0. 00x versus Vistra Corp. 's 1. 60x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Vistra Corp.

(VST) delivered a total return of +884. 7%, compared to -31. 7% for The AES Corporation (AES). Over 10 years, the gap is even starker: VST returned +942. 3% versus CEPU's -7. 3%. 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), The AES Corporation (AES) is the lower-risk stock at 1.

01β versus NRG Energy, Inc. 's 1. 84β — meaning NRG is approximately 83% more volatile than AES relative to the S&P 500. On balance sheet safety, Central Puerto S. A. (CEPU) carries a lower debt/equity ratio of 20% versus 10% for NRG Energy, Inc. — giving it more financial flexibility in a downturn.

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

(NRG) is pulling ahead at 9. 2% versus -12. 4% for Vistra Corp. (VST). On earnings-per-share growth, the picture is similar: NRG Energy, Inc. grew EPS -19. 6% year-over-year, compared to -84. 6% for Central Puerto S. A.. Over a 3-year CAGR, CEPU leads at 28. 7% 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.

The AES Corporation (AES) is the more profitable company, earning 7.

8% net margin versus 2. 8% for NRG Energy, Inc. — meaning it keeps 7. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CEPU leads at 26. 7% versus 6. 0% for NRG. At the gross margin level — before operating expenses — CEPU leads at 39. 5%, 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, Central Puerto S. A. (CEPU) is the more undervalued stock at a PEG of 0. 00x versus Vistra Corp. 's 1. 60x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Central Puerto S. A. (CEPU) trades at 0. 0x forward P/E versus 18. 0x for Vistra Corp. — 17. 9x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for VST: 47. 7% to $227. 60.

In this comparison, AES (4.

9% yield), NRG (1. 5% yield), VST (0. 6% yield) pay a dividend. CEPU does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Vistra Corp.

(VST) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (0. 6% yield, +942. 3% 10Y return). Central Puerto S. A. (CEPU) carries a higher beta of 1. 56 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (VST: +942. 3%, CEPU: -7. 3%), 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 Utilities sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: CEPU is a small-cap quality compounder stock; AES is a mid-cap deep-value stock; NRG is a mid-cap quality compounder stock; VST is a mid-cap quality compounder stock. AES, NRG, VST pay a dividend while CEPU 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.