Berkshire Hathaway: Building a Century-Long Compounding Machine with Insurance Float

Origin

After taking over Berkshire in 1965, Warren Buffett acquired National Indemnity Company to obtain low-cost insurance float, establishing the core philosophy of treating float as long-term capital. The subsequent acquisition of GEICO in 1976 scaled up low-cost auto insurance premiums, expanding the float pool. Ever since, he has insisted on long-term holding of high-quality businesses while maintaining sufficient liquidity during crises, driving compounding through both insurance and physical assets to lay the capital foundation and allocation discipline of this investment platform.

Milestones

Turning Points

• Leveraging insurance float for cross-industry investment, laying the foundation for long-term compounding
• Acquiring GEICO and expanding low-cost insurance operations to scale up the float
• Deploying capital into physical assets such as railroads and energy to achieve diversified growth

Failures & Pitfalls

• The 1998 acquisition of Dexter Shoe resulted in approximately $700 million in losses
• The 9/11 attacks in 2001 triggered a surge in insurance claims, causing a short-term net loss of $500 million
• During COVID-19 in 2020, premium income for certain insurance operations dropped, leading to an approximate 10% decline in net profit

Core Data

• 营收：$276 billion (FY2025, Source: Berkshire Q1 2026 Report) (Publicly disclosed figures, independent verification unverified)
• 净利润：$89.5 billion (FY2025) (Publicly disclosed figures, independent verification unverified)
• 现金与浮存金：$150 billion (End of 2025) (Publicly disclosed figures, independent verification unverified)
• 市值：$1.05 trillion (May 2026) (Publicly disclosed figures, independent verification unverified)
• 员工数：360,000 employees (Publicly disclosed figures, independent verification unverified)

Competitors / Peers

In the US capital markets, aside from Berkshire, companies that similarly utilize insurance float for diversified investments include Markel, Fairfax Financial, and US-based 3G Capital. However, by comparison, Berkshire far outpaces them in asset scale, business scope, and cash reserves, with an even deeper layout in physical assets like railroads, energy, and consumer brands. This has formed a unique dual-engine 'insurance + physical asset' model that competitors find difficult to replicate for long-term compounding effects.