Markets are acting irrationally again.

After the S&P 500 rallied 8.6%, the investor and hedge fund manager warned of a rise in'silliness'.

The silliness is back. The strain of silliness that turned bulls into bubbles disappeared after 2000.

He said that the COVID-era silliness is still going strong.

Michael Lewis's book "The Big Short" depicts Burry as a man who bet against the housing bubble. He was portrayed by Christian Bale in a movie.

The meme-stock frenzy was inadvertently fueled by Burry, who purchased a stake in GameStop, placed high-profile wagers against Musk and the Ark Innovation Exchange traded on the OTC Bulletin Board.

Top Wall Street stock-pickers recommend 19 books to help you understand and successfully invest in bear markets.