Warren Buffett's Berkshire Hathaway (BRK.A) (BRK.B) has compounded at roughly 20% annually over six decades, beating the S&P 500's returns by almost 100%. Valued at a market cap of $1 trillion, Berkshire Hathaway is among the most prominent companies globally. Its extraordinary track record has inspired a cohort of insurance-based conglomerates attempting to replicate Berkshire’s business model. Berkshire uses property and casualty insurance to generate low-cost float, which is then deployed into public e ...