The article points out that although analysts generally consider Berkshire Hathaway's Class B shares to be reasonably valued, its manufacturing, service, and retail segments performed exceptionally well in the second quarter, with revenue increasing by 15.2% year-over-year to $61.5 billion, and net profit growing by 24.1% year-over-year to nearly $4.5 billion. These businesses contributed nearly 40% of the company's discretionary cash flow.