Markel Group is a holding company built around a specialty insurance core, with majority-owned industrial and consumer businesses layered on top. Markel Insurance writes specialty and excess & surplus (E&S) lines — hard-to-place risks that standard insurers won't or can't underwrite — for commercial customers across construction, life sciences, energy, healthcare, transportation, marine, and other sectors, as well as non-standard personal lines. Markel distributes primarily through wholesale brokers and MGAs, and is the fifth largest E&S writer in the U.S. The business model centers on three engines: underwriting profits that generate investable float (currently $18.8B), investment of that float and shareholder capital in fixed income and a long-term equity portfolio, and cash flows from Ventures — a collection of majority-owned industrial and consumer businesses that Markel runs autonomously and uses to compound capital further. The equity portfolio, managed by CEO Tom Gayner, was worth $13B at end of FY25. Markel's Ventures businesses span exterior building materials distribution, precast concrete, fire protection, car-hauling trailers, bakery equipment, ornamental plants, IT consulting, homebuilding, and luxury handbags, among others. Markel also owns State National, a fronting and program services business, and Nephila, an insurance-linked securities manager. Markel deploys capital through reinvestment in existing businesses, acquisitions, public equity purchases, and share buybacks, and has reduced its share count roughly 10% over the past five years.