Prediction market platform Kalshi has introduced new measures to block underage trading. But it is sticking to its opposition to calls to raise the minimum trading age to 21, Axios reported on Sunday.

According to the report, Kalshi Chief Executive Tarek Mansour (타렉 만수르) said underage trading is already banned but the company is implementing additional measures.

Kalshi requires facial recognition from all users when the app launches to block underage access through family accounts. It asks some users to submit a selfie if it deems there is a problematic trading history or high risk. It recommends using two-factor authentication and also introduced a tool that lets users check whether someone else logged into their account. Mansour said the goal is "to set a new industry standard in customer protection."

The measures come as concerns grow about teenagers, especially male teens and young men, taking part in gambling in sportsbooks and prediction markets. A July study by Common Sense Media found 36 percent of boys aged 11 to 17 had gambled in the past year, rising to 49 percent among 17-year-old boys.

Democratic Senator Kirsten Gillibrand and Republican Senator Dave McCormick introduced the "Prediction Market Act of 2026," which would require a program that allows users to request to block themselves from using platforms and mandatory age verification. The NBA and the PGA Tour also urged last week that prediction market trading age be raised to 21 in line with U.S. sportsbook and casino standards. Even so, Mansour said the minimum trading age should remain 18, arguing prediction market trading is no different from stock trading, especially some options markets, Axios reported.