'Big Short' Steve Eisman says cryptocurrencies are mainly good for 'speculation' and 'money laundering'

Deutsche Bank London

Neuberger Berman portfolio manager Steve Eisman shares his views on Deutsche Bank and digital currencies.

Steve Eisman, the investor whose forecast of the financial crisis was depicted in "The Big Short," criticized a German bank and digital currencies on CNBC's " Squawk Box " Thursday.

The Neuberger Berman portfolio manager confirmed his fund is short Deutsche Bank .

"Deutsche Bank has a very simple problem. It doesn't make money. That's a pretty shocking statement at this point 10 years after the crisis," he said. "It's a bit late in the game to try to solve the problem … I think Deutsche has to shrink. I think Deutsche five years from now will be significantly smaller company."

The investor also expressed skepticism over cryptocurrencies, saying the current government backed currency markets already serve the public efficiently.

"I have my doubts about it. My doubts center around the fact what's the social utility of cyptocurrency," he said. "It's good for speculation and good for money laundering ... I have no idea how to value [bitcoin] and I don't think anyone else does either."

Eisman is known for being one of the few investors to profitably bet against subprime mortgage securities during the financial crisis. He was a key character in Michael Lewis' best-selling book "The Big Short" and was depicted by actor Steve Carell in the movie based on the book.

Deutsche Bank did not immediately respond to a request for comment.

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