A move that caught many by surprise was a big write-down for Berkshire's underperforming Kraft Heinz stake. The conglomerate for the first time recorded a loss of $3.8 billion from its 27% Kraft Heinz stake. The move came as reports emerged that the consumer goods giant has been eyeing a spinoff of its grocery business. Two Berkshire executives resigned as directors from Kraft Heinz's board in May. "The investment had been carried on Berkshire's books for more than its market value for some time," said Bill ...