KMX vs AMZN vs MSFT vs AN

For growth investors, Microsoft Corporation (MSFT) is the stronger pick with 14.

9% revenue growth year-over-year, versus -0. 0% for CarMax, Inc. (KMX). AutoNation, Inc. (AN) offers the better valuation at 12. 0x trailing P/E (9. 7x forward), making it the more compelling value choice. Analysts rate Amazon. com, Inc. (AMZN) a "Buy" — based on 94 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, AutoNation, Inc.

(AN) is the cheapest at 12. 0x versus Amazon. com, Inc. at 37. 8x. On forward P/E, AutoNation, Inc. is actually cheaper at 9. 7x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: AutoNation, Inc. wins at 0. 31x versus Microsoft Corporation's 1. 35x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, AutoNation, Inc.

(AN) delivered a total return of +94. 1%, compared to -69. 3% for CarMax, Inc. (KMX). Over 10 years, the gap is even starker: MSFT returned +787. 7% versus KMX's -22. 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), AutoNation, Inc.

(AN) is the lower-risk stock at 0. 85β versus Amazon. com, Inc. 's 1. 51β — meaning AMZN is approximately 78% more volatile than AN relative to the S&P 500. On balance sheet safety, Microsoft Corporation (MSFT) carries a lower debt/equity ratio of 33% versus 4% for AutoNation, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Microsoft Corporation (MSFT) is pulling ahead at 14.

9% versus -0. 0% for CarMax, Inc. (KMX). On earnings-per-share growth, the picture is similar: Amazon. com, Inc. grew EPS 29. 7% year-over-year, compared to 0. 7% for AutoNation, Inc.. Over a 3-year CAGR, MSFT leads at 12. 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.

Microsoft Corporation (MSFT) is the more profitable company, earning 36.

1% net margin versus 1. 8% for CarMax, Inc. — meaning it keeps 36. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MSFT leads at 45. 6% versus 2. 8% for KMX. At the gross margin level — before operating expenses — MSFT leads at 68. 8%, 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, AutoNation, Inc. (AN) is the more undervalued stock at a PEG of 0. 31x versus Microsoft Corporation's 1. 35x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, AutoNation, Inc. (AN) trades at 9. 7x forward P/E versus 34. 8x for Amazon. com, Inc. — 25. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MSFT: 31. 1% to $551. 75.

In this comparison, MSFT (0.

8% yield) pays a dividend. KMX, AMZN, AN do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Microsoft Corporation (MSFT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

89), 0. 8% yield, +787. 7% 10Y return). Both have compounded well over 10 years (MSFT: +787. 7%, KMX: -22. 1%), 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 (KMX (Consumer Cyclical) and AMZN (Consumer Cyclical) and MSFT (Technology) and AN (Consumer Cyclical)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: KMX is a small-cap deep-value stock; AMZN is a mega-cap quality compounder stock; MSFT is a mega-cap quality compounder stock; AN is a small-cap deep-value stock. MSFT pays a dividend while KMX, AMZN, AN 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.