Markel trades below a cautious estimate of what a share is worth.

Markel is three things under one share count: a specialty insurer, a $13.1 billion portfolio of public stocks, and a group of wholly owned industrial, financial and consumer businesses. Since 2024 the company has published a simple formula for valuing the whole. Applied to the September 2026 balance sheet, that formula gives $2,759 a share.

That figure flatters. It capitalizes pre-tax earnings at 12 times and counts $9.0 billion of unrealized stock gains as if no tax were owed on them. This site keeps Markel's structure and adds the two taxes: 22% on operating earnings and 22% on the embedded gain. The result is $2,253.

At $1,962 a buyer pays $1,032 for a share's worth of securities and cash, net of debt and deferred tax, and $930 for the operating businesses. Those businesses earn about $102 a share after tax, so the price implies 9.1 times earnings, an earnings yield of 10.9% on that slice.

Markel describes its calculation in the fourth-quarter release and the annual report. It has two parts. The earnings part takes adjusted operating income, removes stock dividends and interest on cash and short-term investments, averages three years, and applies a multiple with 12 as the midpoint of an 8 to 16 range. The balance-sheet part adds stocks, cash and short-term investments, then subtracts debt, preferred stock and noncontrolling interests. The sum is divided by shares outstanding.

Bonds are not in the balance-sheet part. They back insurance reserves, and their interest stays in the earnings being capitalized. This site follows the same split and changes two inputs.

Why the earnings input is the 2023 to 2025 average

Markel runs this calculation once a year, so $1,598 million is the latest figure the company has published. Adjusted earnings for the twelve months to September 2026 were $1,888 million. Averaging 2024, 2025 and those twelve months gives $1,822 million, and the base case rises to $2,424. That roll-forward counts the fourth quarter of 2025 twice, so it is offered in the calculator and kept out of the headline.

Why 22%

Markel's 2025 shareholder letter applies a 22% rate to its own unrealized gains and puts the deferred liability at nearly $2 billion. The quarterly effective rate in the Q3 2026 filing was also 22%.

Markel's year-end tables allow the formula to be run for each year since 2020. Run at 12 times, the result compounds at 15.2% a year from 2020 to 2025, which matches the growth rate Markel reports. The stock has closed every one of those years at 68% to 81% of the formula's value.

So a gap between price and Markel's number is not a new signal. The market has never paid the untaxed figure. Today the stock is at 71% of the formula's value, against 81% at the end of 2025.

A company that repurchases stock is stating a view on value with its own cash. Markel bought 357,262 shares in the first nine months of 2026 for $685.3 million, an average of about $1,918. That is 15% below this site's base case and 2% below the current price. The third quarter alone was 168,019 shares at about $1,873.

The pace has picked up. Nine months of 2026 already exceed all of 2025 by 60% in dollars. The share count is down 10% in five years, from 13.685 million to 12.250 million. $832.6 million remained on the $2 billion authorization at 30 September.

1. Stocks and cash may be counted too generously. The formula treats all $19.5 billion of equities, cash and short-term investments as owned free and clear. Unpaid losses were $33.9 billion against $17.3 billion of bonds, so some of that pile is working capital for the insurer and regulatory capital that cannot be paid out. A 10% haircut takes about $159 a share off every case.
2. Reserve releases are doing a lot of the underwriting. Favorable development on prior years was $387.1 million in nine months of 2026, 6.3 points of the 92.5% combined ratio. Without it the ratio is close to 99%. If releases stop, insurance earnings fall well below the three-year average.
3. The fronting loss may not be a one-off. The $205.3 million provision relates to a single bankrupt capacity provider at State National. The three-year average used here predates it. Fronting earns thin fees for carrying other people's credit risk, and one loss of this size erases several years of them.
4. Twelve times is a choice. Each turn of the multiple moves the base case by about $102 a share. A buyer who demands 12% with no growth should use 8.3 times and gets $1,880, 4% below today's price.
5. Interest is handled loosely. Earnings are taken before interest and debt is subtracted at face value. Taxing pre-interest earnings ignores the deduction on roughly $205 million of annual interest, which understates value by about $45 million a year of tax, or roughly $44 a share at 12 times.
6. The earnings average lags. Using 2023 to 2025 leaves out a stronger 2026 in insurance and a weaker one in Financial. The calculator shows both alternatives.