Icahn, speaking at the Reuters Global Investment Outlook Summit, also hinted at his ongoing plan for Apple, the most valuable U.S. stock by market value, saying that he does not want to fight with management at the iPhone giant but has no plans to walk away from his investment.
(Read more: US court revives Apple bid for Samsung injunction)
Icahn, who runs Icahn Enterprises, is urging Apple to buy back $150 billion worth of shares, which the company has not committed to. Icahn owns approximately 0.4 percent of Apple's outstanding shares.
The 77-year-old billionaire investor's views on markets and individual companies are widely followed in light of strong returns he has generated after his involvement in different companies.