Thanks for supporting Marketplace this Giving Tuesday. If you missed it - you can still contribute to powering public media! Donate Now!

A markets regulator is concerned about bets on election results

Financial regulators are worried about derivatives markets — especially ones regarding elections.
"There's some concern that goes back to the election between Barack Obama and Mitt Romney, where people placed ... big bets that Mitt Romney would win," said the University of Michigan's Erik Gordon.
John Moore/Getty Images