KEY POINTS
  • Bitcoin has soared in recent months, boosted in part by adoption from major financial institutions, investors and companies, including Tesla.
  • Citadel Securities handles about 40% of the daily retail trading in the U.S.
  • Bitcoin traded above $53,000, putting its six-month gain at more than 350%.

Ken Griffin, who runs a sprawling Wall Street empire that includes market-making operations and a hedge fund, was dismissive of cryptocurrencies on Friday even as some see the emerging asset as the future of finance.

"I just don't spend much time thinking about cryptocurrencies," the founder and CEO of Citadel told CNBC's Andrew Ross Sorkin on "Squawk Box." "I don't see the economic underpinning of cryptocurrencies. I understand how to value a stock — the net present value of earnings. I understand how to think about currency-exchange rates around the world."