Hedge fund investor Michael Burry, who was played by actor Christian Bale in the 2015 film The Big Short, a film about traders who made millions from predicting the collapse of the US housing bubble in 2008, has turned his attention to AI.

Michael Burry, the investor of The Big Short fame, is betting against artificial intelligence. Burry, who correctly called the 2008 housing market collapse, returned to X Thursday after a two-year hiatus to warn of an AI “bubble” with a series of cryptic messages and memes.

Michael Burry, who shorted the housing market in 2008, has bet over $1 billion that the shares of AI companies Nvidia and Palantir will fall.