AFGB vs AFG vs MKL vs RLI

For growth investors, RLI Corp.

(RLI) is the stronger pick with 6. 3% revenue growth year-over-year, versus -1. 3% for American Financial Group, Inc. (AFG). American Financial Group, Inc. (AFGB) offers the better valuation at 2. 1x trailing P/E (1. 9x 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, American Financial Group, Inc.

(AFGB) is the cheapest at 2. 1x versus American Financial Group, Inc. at 13. 1x. On forward P/E, American Financial Group, Inc. is actually cheaper at 1. 9x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: American Financial Group, Inc. wins at 0. 46x versus American Financial Group, Inc. 's 2. 82x — 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 +57. 3%, compared to +2. 6% for American Financial Group, Inc. (AFGB). Over 10 years, the gap is even starker: AFG returned +213. 9% versus AFGB's +26. 6%. 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 American Financial Group, Inc. 's 0. 74β — meaning AFGB is approximately -12719% 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), RLI Corp.

(RLI) is pulling ahead at 6. 3% 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, MKL leads at 12. 0% 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, American Financial Group, Inc. (AFGB) is the more undervalued stock at a PEG of 0. 46x versus American Financial Group, Inc. 's 2. 82x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, American Financial Group, Inc. (AFGB) trades at 1. 9x forward P/E versus 17. 7x for RLI Corp. — 15. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AFG: 16. 1% to $153. 50.

All stocks in this comparison pay dividends.

American Financial Group, Inc. (AFGB) offers the highest yield at 34. 0%, versus 2. 7% for Markel Corporation (MKL).

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, +106. 8% 10Y return). Both have compounded well over 10 years (RLI: +106. 8%, AFGB: +26. 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.

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.

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.