KEY POINTS
  • "In my day I've seen a lot of wild rallies with a lot of mispriced stocks, but there is one thing they all have in common. Eventually they hit a wall and go into a major painful correction," Carl Icahn said.
  • Icahn's cautionary statements came as the U.S. stock market fell sharply on the first trading day of the new year.
  • The rapid rise and ballooning valuations for stocks have made some Wall Street strategists wary of the market's path in the near term

Billionaire investor Carl Icahn warned of the possibility of a significant decline for stocks at some point, telling CNBC's Scott Wapner that "wild rallies" in the market always meet a dramatic end.

Wapner reported Icahn's warning on "Halftime Report" during a turbulent day for the stock market.