KEY POINTS
  • Billionaire investor Carl Icahn says he doesn't like bitcoin and other cryptocurrencies, calling them "ridiculous."
  • "Maybe I'm too old for them," he says, "but I wouldn't touch that stuff."

Billionaire investor Carl Icahn told CNBC on Tuesday that he has an unfavorable view of bitcoin and other cryptocurrencies, calling them "ridiculous."

"I don't like the cryptocurrencies only because, maybe I don't understand them," the chairman of Icahn Enterprises said in an interview on "Fast Money Halftime Report." "How do you regulate them?"