CNBC reports that veteran investor Mark Mobius warned that a contested outcome in the U.S. presidential election could cause a “dramatic fall” in the stock markets.

“That’s a real issue and a real problem,” Mobius, founding partner of Mobius Capital Partners, told in response to a question on the implications of a disputed election, in which the eventual winner is not finalized until weeks or months after the Nov. 3 vote.  

“If that takes place, then we’re really in trouble. The markets will not like it and you’ll see a real correction or maybe a dramatic fall in the market. So that’s a very, very big problem,” Mobius said.

Such an outcome could happen if a candidate deemed to have lost the election refuses to concede, or if he questions the legitimacy of the results.