Will prediction markets live up to the hype?

THE LINE between investing and gambling has always been thin. This is especially true for prediction markets, where punters bet on events ranging from the banal (“will average gas prices be higher this week than last week?”) to the light-hearted (“who will win best actress at the Oscars?”). Prediction markets have something of a cult following among finance types who rave about the value of putting a price on any event, anywhere in the world. Such prices capture insights into the likelihood of something happening by forcing betters to put money where their mouths are. But critics argue such markets will fail to grow beyond a niche group, reducing the value of their predictions in the process.