SLF vs UNM vs MET vs PRU vs LNC

For growth investors, Sun Life Financial Inc.

(SLF) is the stronger pick with 22. 3% revenue growth year-over-year, versus -14. 0% for Prudential Financial, Inc. (PRU). Lincoln National Corporation (LNC) offers the better valuation at 6. 2x trailing P/E (4. 7x forward), making it the more compelling value choice. Analysts rate MetLife, Inc. (MET) a "Buy" — based on 33 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, Lincoln National Corporation (LNC) is the cheapest at 6.

2x versus Unum Group at 18. 8x. On forward P/E, Lincoln National Corporation is actually cheaper at 4. 7x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Lincoln National Corporation wins at 0. 14x versus Unum Group's 4. 76x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Unum Group (UNM) delivered a total return of +193.

8%, compared to -35. 2% for Lincoln National Corporation (LNC). Over 10 years, the gap is even starker: UNM returned +177. 2% versus LNC's +24. 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), Sun Life Financial Inc.

(SLF) is the lower-risk stock at 0. 39β versus Lincoln National Corporation's 1. 34β — meaning LNC is approximately 243% more volatile than SLF relative to the S&P 500. On balance sheet safety, Unum Group (UNM) carries a lower debt/equity ratio of 35% 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 -14. 0% for Prudential Financial, Inc. (PRU). On earnings-per-share growth, the picture is similar: Prudential Financial, Inc. grew EPS 36. 3% year-over-year, compared to -68. 3% for Lincoln National Corporation. 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 4. 4% for MetLife, Inc. — 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 6. 0% for MET. 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.

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, Lincoln National Corporation (LNC) is the more undervalued stock at a PEG of 0. 14x versus Unum Group's 4. 76x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Lincoln National Corporation (LNC) trades at 4. 7x forward P/E versus 12. 0x for Sun Life Financial Inc. — 7. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MET: 22. 4% to $96. 50.

All stocks in this comparison pay dividends.

Prudential Financial, Inc. (PRU) offers the highest yield at 5. 5%, versus 2. 2% for Unum Group (UNM).

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%, LNC: +24. 5%), 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 Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: SLF is a mid-cap high-growth stock; UNM is a mid-cap quality compounder stock; MET is a mid-cap deep-value stock; PRU is a mid-cap deep-value stock; LNC is a small-cap deep-value 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.