Insider Trading on Prediction Markets: The Super Bowl Betting Controversy

Prediction markets like Polymarket and Kalshi have come under scrutiny after multiple instances of suspected insider trading, with the most recent example occurring during the Super Bowl halftime show.

The Super Bowl Betting Controversy

An anonymous Polymarket account created just one day before placing bets correctly predicted 17 out of approximately 20 outcomes related to Bad Bunny’s Super Bowl halftime performance. The account accurately forecasted which artists would and wouldn’t appear, making about $17,000 in profit. The statistically improbable success rate strongly suggests the bettor had insider knowledge.

This incident follows a similar case earlier this year when an anonymous bettor perfectly predicted the US invasion of Venezuela hours before it occurred, netting over $400,000 in profits.

Regulatory Vacuum and Growing Concerns

Unlike Wall Street, where insider trading is strictly prohibited, prediction markets currently operate without clear regulations. This regulatory vacuum creates an environment where those with insider information can profit significantly at the expense of other users.

The Super Bowl saw record trading volumes on prediction markets, with Kalshi reporting over half a billion dollars in trading related to the game’s outcome, while Polymarket’s equivalent bet reached over $55 million in volume.

How Prediction Markets Differ from Traditional Gambling

Unlike traditional casinos where users bet against the house, prediction market users bet against each other. This means that for every winner, there must be a loser, creating a zero-sum game where informed insiders can systematically profit from less knowledgeable participants.

As economics professor and prediction markets expert Eric Zitzewitz explained to Business Insider, “Those other people are going to, on average, make losses if they know less about the subject matter than the experts.”

Regulatory Outlook

Despite growing concerns, meaningful regulation could take years to materialize, if at all. The White House has shown support for the prediction market industry, with former President Trump’s media group even announcing plans to enter the business.

In the absence of federal oversight, state officials like New York Attorney General Letitia James have issued warnings to consumers about the risks associated with these unregulated platforms.

Implications for Users

The continued evidence of insider trading raises serious questions about the fairness of prediction markets. Regular users may increasingly find themselves at a disadvantage against professional gamblers and those with insider information.

For prediction markets to remain viable in the long term, they must maintain user confidence that the system isn’t rigged against them—a challenge that grows with each high-profile instance of suspected insider trading.