AFG vs MKL: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: AFG is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AFG and MKL share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AFG and MKL exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

American Financial Group (NYSE: AFG) writes specialty property and casualty insurance in the United States through roughly three dozen separate businesses grouped under the Great American Insurance Group banner. The book splits into Property and Transportation (crop, trucking, ocean marine, equipment), Specialty Casualty (excess and surplus lines, executive liability, workers' compensation, targeted programs), and Specialty Financial (fidelity and surety, lender-placed property, trade credit). AFG sold its annuity business to MassMutual in 2021, which turned it into a focused underwriter with a large investment portfolio and a habit of returning excess capital rather than hoarding it. The Lindner family remains closely involved in management, and the company's stated posture is to shrink lines where pricing does not clear its return hurdle instead of chasing premium volume.

Full AFG guide

Markel Group Inc. is a Virginia-based holding company built on three engines: a specialty property and casualty insurance operation that underwrites hard-to-place and niche risks (from executive liability to equine coverage), an investment portfolio funded largely by insurance float, and Markel Ventures, a group of wholly owned operating businesses spanning industrial, consumer, and services companies. The insurance business generates premiums and, ideally, an underwriting profit, while the float is invested in equities and fixed income to compound over time. This design is why MKL is frequently described as a mini Berkshire Hathaway.

Full MKL guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• AFG drivers: Underwriting margin in a softening market; Investment income as the second engine.
• MKL drivers: Specialty underwriting discipline; Investment portfolio and float.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Commercial P&C pricing is decelerating, and if rate increases fall below loss cost inflation the combined ratio deteriorates quickly across a book this size. For MKL, reported earnings are volatile because unrealized investment gains and losses run through the income statement, so a down market can produce a headline net loss (as in Q1 2026) even with solid underwriting.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick AFG if you believe its drivers more; MKL if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AFG and MKL guides.

AFG. AFG trades at roughly 12.7 times trailing earnings and about 11.8 times forward estimates, which is a mid-pack multiple among specialty P&C insurers and well below the growth-oriented excess and surplus names. On book value the picture is different: at ~$146 per share against ~$58.14 of book value, the stock carries a price-to-book near 2.5 times, a premium justified only by the ~19% core operating return on equity delivered in the latest quarter. Fiscal 2025 revenue was ~$8.17 billion with net income of ~$842 million and EPS of ~$10.08, so trailing twelve month EPS of ~$11.45 reflects genuine improvement rather than a low base.

MKL. MKL trades around a low-to-mid teens price-to-earnings multiple and near a modest premium to its roughly $1,447 book value per share, valuation anchors that matter more than headline EPS given the volatility of investment marks. Consensus 2026 EPS estimates were trimmed (from about $159 toward the low $140s) after a soft first quarter, and the reported Q1 2026 net loss reflected investment swings rather than a collapse in underwriting. Figures are approximate and move with markets and reserve updates.

Headline figures (approximate, August 2026): AFG shows market cap ~$12.1B, revenue (ttm) ~$8.06B, net income (ttm) ~$953M, p/e (ttm) ~12.7x; MKL shows revenue (ttm) ~$15B, q1 2026 revenue ~$3.55B, market cap ~$23B, book value per share ~$1,447.

AFG and MKL are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AFG and MKL exposure against your real portfolio. It is not an investment adviser.