AFL vs UNH vs CVS vs CI vs MCK

For growth investors, McKesson Corporation (MCK) is the stronger pick with 16.

2% revenue growth year-over-year, versus -8. 8% for Aflac Incorporated (AFL). Cigna Corporation (CI) offers the better valuation at 12. 8x trailing P/E (9. 4x forward), making it the more compelling value choice. Analysts rate UnitedHealth Group Incorporated (UNH) a "Buy" — based on 52 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, Cigna Corporation (CI) is the cheapest at 12.

8x versus CVS Health Corporation at 62. 8x. On forward P/E, Cigna Corporation is actually cheaper at 9. 4x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: McKesson Corporation wins at 0. 49x versus Aflac Incorporated's 33. 17x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, McKesson Corporation (MCK) delivered a total return of +286.

9%, compared to -2. 6% for UnitedHealth Group Incorporated (UNH). Over 10 years, the gap is even starker: MCK returned +348. 1% versus CVS's +3. 5%. 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), McKesson Corporation (MCK) is the lower-risk stock at 0.

04β versus UnitedHealth Group Incorporated's 0. 59β — meaning UNH is approximately 1261% more volatile than MCK relative to the S&P 500. On balance sheet safety, Aflac Incorporated (AFL) carries a lower debt/equity ratio of 29% versus 124% for CVS Health Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), McKesson Corporation (MCK) is pulling ahead at 16.

2% versus -8. 8% for Aflac Incorporated (AFL). On earnings-per-share growth, the picture is similar: Cigna Corporation grew EPS 82. 9% year-over-year, compared to -62. 0% for CVS Health Corporation. Over a 3-year CAGR, CI leads at 15. 1% 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.

Aflac Incorporated (AFL) is the more profitable company, earning 20.

9% net margin versus 0. 4% for CVS Health Corporation — meaning it keeps 20. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AFL leads at 26. 6% versus 1. 2% for MCK. At the gross margin level — before operating expenses — AFL leads at 38. 9%, 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, McKesson Corporation (MCK) is the more undervalued stock at a PEG of 0. 49x versus Aflac Incorporated's 33. 17x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Cigna Corporation (CI) trades at 9. 4x forward P/E versus 20. 2x for UnitedHealth Group Incorporated — 10. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MCK: 33. 8% to $1006. 50.

All stocks in this comparison pay dividends.

CVS Health Corporation (CVS) offers the highest yield at 3. 1%, versus 0. 4% for McKesson Corporation (MCK).

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

19), 2. 0% yield, +272. 5% 10Y return). Both have compounded well over 10 years (AFL: +272. 5%, UNH: +220. 6%), 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 (AFL (Financial Services) and UNH (Healthcare) and CVS (Healthcare) and CI (Healthcare) and MCK (Healthcare)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: AFL is a mid-cap deep-value stock; UNH is a large-cap quality compounder stock; CVS is a mid-cap income-oriented stock; CI is a mid-cap deep-value stock; MCK is a mid-cap high-growth stock. AFL, UNH, CVS, CI pay a dividend while MCK 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.