Others build it by staying quiet for years and then saying exactly one thing that everyone remembers. Michael Burry on Berkshire Hathaway and the fat pitch warningMichael Burry said his biggest worry about Berkshire Hathaway was that Warren Buffett's eventual successor would lack the patience to wait for the right opportunity, an investing idea Buffett described as waiting for the perfect pitch. I do not find Berkshire an attractive investment going forward," Burry wrote in his Cassandra Unchained newsletter on August 10. Related: Michael Burry just sent a fresh signal to stock market investorsBurry's comments carry weight because his own recent calls have been landing. On August 6, he added new short positions against Oracle and neocloud company Nebius, extending his bearish AI bets.