Berkshire Hathaway is hard to call expensive: about $400B of cash and $300B of stocks mean a roughly $1T valuation pays only about $300B for the railroad, energy, insurance and operating businesses. Its insurance float is a massively underestimated source of cheap capital, and the cash is a call option on future chaos, letting it write huge checks when markets panic. Greg Abel understands its culture. Whitney Tilson, quoted via @kejca, expects it to beat the S&P 500 over five years. x.com x.com x.comÂ