SLF vs UNH

For growth investors, Sun Life Financial Inc.

(SLF) is the stronger pick with 22. 3% revenue growth year-over-year, versus 11. 8% for UnitedHealth Group Incorporated (UNH). Sun Life Financial Inc. (SLF) offers the better valuation at 15. 4x trailing P/E (12. 0x 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, Sun Life Financial Inc.

(SLF) is the cheapest at 15. 4x versus UnitedHealth Group Incorporated at 27. 9x. On forward P/E, Sun Life Financial Inc. is actually cheaper at 12. 0x.

Over the past 5 years, Sun Life Financial Inc.

(SLF) delivered a total return of +48. 2%, compared to -2. 6% for UnitedHealth Group Incorporated (UNH). Over 10 years, the gap is even starker: UNH returned +220. 6% versus SLF's +172. 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), Sun Life Financial Inc.

(SLF) is the lower-risk stock at 0. 39β versus UnitedHealth Group Incorporated's 0. 59β — meaning UNH is approximately 51% more volatile than SLF relative to the S&P 500. On balance sheet safety, UnitedHealth Group Incorporated (UNH) carries a lower debt/equity ratio of 77% versus 87% for Sun Life Financial Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Sun Life Financial Inc.

(SLF) is pulling ahead at 22. 3% versus 11. 8% for UnitedHealth Group Incorporated (UNH). On earnings-per-share growth, the picture is similar: Sun Life Financial Inc. grew EPS 16. 7% year-over-year, compared to -14. 7% for UnitedHealth Group Incorporated. Over a 3-year CAGR, SLF leads at 130. 8% 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.

Sun Life Financial Inc.

(SLF) is the more profitable company, earning 8. 9% net margin versus 2. 7% for UnitedHealth Group Incorporated — meaning it keeps 8. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SLF leads at 11. 4% versus 4. 2% for UNH. At the gross margin level — before operating expenses — SLF leads at 100. 0%, 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.

On forward earnings alone, Sun Life Financial Inc.

(SLF) trades at 12. 0x forward P/E versus 20. 2x for UnitedHealth Group Incorporated — 8. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for SLF: 4. 6% to $72. 70.

All stocks in this comparison pay dividends.

Sun Life Financial Inc. (SLF) offers the highest yield at 3. 8%, versus 2. 4% for UnitedHealth Group Incorporated (UNH).

For long-horizon retirement investors, Sun Life Financial Inc.

(SLF) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 39), 3. 8% yield, +172. 7% 10Y return). Both have compounded well over 10 years (SLF: +172. 7%, 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 (SLF (Financial Services) and UNH (Healthcare)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: SLF is a mid-cap high-growth stock; UNH is a large-cap quality compounder stock. 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.