A significant regulatory gray zone has emerged as new data reveals that Kalshi users aged 18 to 21 have traded an estimated $3.9 billion on sports-related contracts this year. While sports gambling is strictly limited to those 21 and older in most U.S. states, Kalshi permits 18-year-olds to participate because it is regulated as a financial market under the jurisdiction of the Commodity Futures Trading Commission (CFTC).
Financial Market or Gambling?
The core distinction lies in the regulatory framework. Traditional sportsbooks are regulated at the state level, whereas Kalshi defines itself as a prediction market exchange. According to a CNN analysis, users between 18 and 21 traded a total of $5.4 billion on the platform, with the vast majority tied to sports events. Kalshi maintains that this demographic represents only 3.14% of its overall trading volume.
On Kalshi, users purchase event contracts with binary "yes" or "no" outcomes. The platform matches buyers and sellers directly, arguing that because it does not set odds or profit from customer losses, it does not constitute a sportsbook. However, critics point out that the platform's "combos" function similarly to parlay bets, where multiple outcomes must occur for a payout.
Legal Challenges and Psychological Risks
New York State is currently suing to shut down the platform, alleging it operates an unlicensed gambling site. Furthermore, a recent ruling by the 9th U.S. Circuit Court of Appeals allowed Nevada to enforce state gaming laws against Kalshi’s sports contracts. A coalition of 44 state attorneys general has also signaled opposition, arguing that the CFTC is overstepping its authority.
Beyond legalities, a peer-reviewed paper in Science has warned of behavioral addiction risks. The design of commercial prediction markets, characterized by continuous novelty and infinite event streams, may weaken prefrontal inhibitory control. Researchers suggest this architecture prioritizes trading volume over forecasting accuracy, potentially driving compulsive use in younger, more impressionable individuals.
