Fact checked by Vikki Velasquez Warren Buffett’s Berkshire Hathaway Inc. (BRK.A, BRK.B) is the single largest private holder of U.S. Treasury bills, surpassing even the Federal Reserve’s own holdings.

Little did they know that days after they had pushed Berkshire’s class A shares to a record, Buffett would announce he planned to step down as chief executive. Since then, the conglomerate’s high-vote A shares have fallen 14 per cent,