Shares slid 1.9% to $442.90 as markets digested the end of an era: Warren Buffett is stepping down as chairman of Berkshire Hathaway, effective immediately, be

Shares slid 1.9% to $442.90 as markets digested the end of an era: Warren Buffett is stepping down as chairman of Berkshire Hathaway, effective immediately, becoming chairman emeritus while his son Howard Buffett replaces him. Over six decades, Buffett posted a 19.7% compounded annual return, nea…