SAIA vs AMZN vs UPS vs FDX

For growth investors, Amazon.

com, Inc. (AMZN) is the stronger pick with 12. 4% revenue growth year-over-year, versus -2. 5% for United Parcel Service, Inc. (UPS). United Parcel Service, Inc. (UPS) offers the better valuation at 15. 3x trailing P/E (14. 1x forward), making it the more compelling value choice. Analysts rate Saia, Inc. (SAIA) a "Buy" — based on 32 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, United Parcel Service, Inc.

(UPS) is the cheapest at 15. 3x versus Saia, Inc. at 47. 2x. On forward P/E, United Parcel Service, Inc. is actually cheaper at 14. 1x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: United Parcel Service, Inc. wins at 0. 42x versus Saia, Inc. 's 3. 29x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Saia, Inc.

(SAIA) delivered a total return of +83. 3%, compared to -40. 0% for United Parcel Service, Inc. (UPS). Over 10 years, the gap is even starker: SAIA returned +1568% versus UPS's +44. 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), United Parcel Service, Inc.

(UPS) is the lower-risk stock at 0. 90β versus Saia, Inc. 's 1. 90β — meaning SAIA is approximately 111% more volatile than UPS relative to the S&P 500. On balance sheet safety, Saia, Inc. (SAIA) carries a lower debt/equity ratio of 16% versus 199% for United Parcel Service, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Amazon.

com, Inc. (AMZN) is pulling ahead at 12. 4% versus -2. 5% for United Parcel Service, Inc. (UPS). On earnings-per-share growth, the picture is similar: Amazon. com, Inc. grew EPS 29. 7% year-over-year, compared to -29. 6% for Saia, Inc.. Over a 3-year CAGR, AMZN leads at 11. 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.

Amazon.

com, Inc. (AMZN) is the more profitable company, earning 10. 8% net margin versus 4. 7% for FedEx Corporation — meaning it keeps 10. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AMZN leads at 11. 2% versus 6. 9% for FDX. At the gross margin level — before operating expenses — AMZN leads at 50. 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, United Parcel Service, Inc. (UPS) is the more undervalued stock at a PEG of 0. 42x versus Saia, Inc. 's 3. 29x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, United Parcel Service, Inc. (UPS) trades at 14. 1x forward P/E versus 42. 3x for Saia, Inc. — 28. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for UPS: 15. 1% to $115. 23.

In this comparison, UPS (6.

3% yield), FDX (1. 5% yield) pay a dividend. SAIA, AMZN do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, United Parcel Service, Inc.

(UPS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 90), 6. 3% yield). Amazon. com, Inc. (AMZN) carries a higher beta of 1. 51 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (UPS: +44. 7%, AMZN: +697. 8%), 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 (SAIA (Industrials) and AMZN (Consumer Cyclical) and UPS (Industrials) and FDX (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: SAIA is a mid-cap quality compounder stock; AMZN is a mega-cap quality compounder stock; UPS is a mid-cap deep-value stock; FDX is a mid-cap quality compounder stock. UPS, FDX pay a dividend while SAIA, AMZN 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.