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State of Play’s TL;DR
- A University of Iowa prediction market was the precursor for modern platforms.
- The difference was that firms like Kalshi and Polymarket have not set any limit on trade amounts.
A University of Iowa prediction market launched in 1988 helped lay the groundwork for modern event-contract platforms such as Polymarket and Kalshi.
The difference now is scale: Iowa’s academic market caps traders at $500, while the commercial platforms draw billions of dollars in wagers and face intensifying regulatory scrutiny.
The Iowa Electronic Markets, run by the University of Iowa’s College of Business, has long focused on forecasting federal elections.
According to KCRG’s investigation, that university-run model helped spawn today’s higher-profile prediction markets, which now offer contracts on a much wider range of events and sit closer to the US gambling-policy spotlight.
Iowa’s academic market was built to prioritize forecasting
The Iowa Electronic Markets has operated since 1988 and limits traders to $500. Director Tom Gruca told KCRG that cap is meant to stop wealthy participants from pushing prices away from what the market is actually trying to measure.
“If you have unlimited amounts of money, then people with lots of money to burn can enter the markets and move the prices away from what the true values will be.”
Gruca said prediction markets are designed to pool information before an event happens, reducing uncertainty and producing useful signals. The Iowa market, the report said, has correctly predicted the presidential candidate who won the popular vote through the 2024 election.
Gruca also said the market’s narrower design is intentional.
“We want people with good information who are going to share that information through their trading activity.”
He added that too many markets can spread expertise thin and attract entertainment-driven trading that makes prices “strange.”
Polymarket and Kalshi expanded the model
Polymarket and Kalshi took the core prediction market concept into commercial markets with no wagering cap and contracts beyond elections, including entertainment events such as the Academy Awards.
The platforms now draw billions of dollars in wagers.
Gruca said uncapped markets can change what prices represent.
“Then the prices no longer reflect what’s going to happen. They reflect people’s ability and willingness to hedge their position.”
According to Gruca, the Biden administration treated contests including elections, sporting events, and the Academy Awards as gaming and “strictly forbidden,” while the new administration is taking a more permissive view.
Sports contracts used to enter banned markets
Gruca told KCRG the platforms have become a way for some users to bet on sports in states where sports betting is illegal, while operators argue these are national markets that should not be governed by state law.
That leaves the next chapter centered on regulation: How far the CFTC will allow event contracts to go, and whether state-level gambling rules can meaningfully apply to platforms that present themselves as nationwide prediction markets.
Based on reporting by Lacey Reeves for KCRG News 9.
