Michael Burry says he's not shorting crypto, but does believe it's in a bubble

Michael Burry attends the "The Big Short" New York premiere at Ziegfeld Theater on November 23, 2015 in New York City.
Jim Spellman | WireImage | Getty Images

Famed investor Michael Burry told CNBC Friday that he has not been betting against cryptocurrencies, but he believes that they are in a speculative bubble that could burst.