Author: Sean Williams, The Motley Fool

The soon-to-be-retiring Oracle of Omaha has pared down Berkshire’s stake in Bank of America for five straight quarters, but recently loaded up on shares of a company that’s far more “magnificent.”

One of Wall Street’s most famous contrarians just made a sizable bet on the AI bubble popping.

It’s gained 58,000% since its public debut.

History points to trouble ahead.

When things seem too good to be true on Wall Street, they typically are.