AFG vs MKL vs RLI vs ERIE

For growth investors, Erie Indemnity Company (ERIE) is the stronger pick with 7.

2% revenue growth year-over-year, versus -1. 3% for American Financial Group, Inc. (AFG). Markel Corporation (MKL) offers the better valuation at 10. 6x trailing P/E (16. 0x forward), making it the more compelling value choice. Analysts rate American Financial Group, Inc. (AFG) a "Hold" — based on 17 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, Markel Corporation (MKL) is the cheapest at 10.

6x versus Erie Indemnity Company at 20. 4x. On forward P/E, American Financial Group, Inc. is actually cheaper at 11. 8x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Markel Corporation wins at 0. 64x versus American Financial Group, Inc. 's 2. 81x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, American Financial Group, Inc.

(AFG) delivered a total return of +56. 3%, compared to +9. 3% for RLI Corp. (RLI). Over 10 years, the gap is even starker: AFG returned +211. 6% versus MKL's +89. 3%. 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), RLI Corp.

(RLI) is the lower-risk stock at -0. 01β versus Markel Corporation's 0. 44β — meaning MKL is approximately -7532% more volatile than RLI relative to the S&P 500. On balance sheet safety, RLI Corp. (RLI) carries a lower debt/equity ratio of 6% versus 38% for American Financial Group, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Erie Indemnity Company (ERIE) is pulling ahead at 7.

2% versus -1. 3% for American Financial Group, Inc. (AFG). On earnings-per-share growth, the picture is similar: RLI Corp. grew EPS 16. 6% year-over-year, compared to -15. 1% for Markel Corporation. Over a 3-year CAGR, ERIE leads at 12. 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.

RLI Corp.

(RLI) is the more profitable company, earning 21. 4% net margin versus 10. 3% for American Financial Group, Inc. — meaning it keeps 21. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: RLI leads at 27. 5% versus 13. 1% for AFG. At the gross margin level — before operating expenses — MKL leads at 69. 4%, 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, Markel Corporation (MKL) is the more undervalued stock at a PEG of 0. 64x versus American Financial Group, Inc. 's 2. 81x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, American Financial Group, Inc. (AFG) trades at 11. 8x forward P/E versus 17. 9x for RLI Corp. — 6. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AFG: 16. 6% to $153. 50.

All stocks in this comparison pay dividends.

American Financial Group, Inc. (AFG) offers the highest yield at 5. 5%, versus 2. 2% for Erie Indemnity Company (ERIE).

For long-horizon retirement investors, RLI Corp.

(RLI) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 01), 5. 3% yield, +105. 0% 10Y return). Both have compounded well over 10 years (RLI: +105. 0%, MKL: +89. 3%), 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: AFG is a mid-cap deep-value stock; MKL is a mid-cap deep-value stock; RLI is a small-cap deep-value stock; ERIE is a mid-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.