Berkshire Hathaway posts quarterly drop in operating profit
                                
                                
                                    (Newser) -
                                    Operating earnings are the best way to assess profitability, Warren Buffett says. On Saturday, Berkshire Hathaway released results showing operating profit for the fourth quarter of 2022 was $6.7 billion, almost 8% off third-quarter earnings of $7.8 billion,  CNN  reports. All told, earnings fell 125% for a loss...