Kalshi users as young as 18 are now responsible for billions of dollars worth of trading activity on sports that critics say amounts to a loophole in gambling laws.
A recent analysis by CNN showed so far this year users between the ages of 18 and 21 traded an estimated $5.4 billion on Kalshi, the largest prediction market in the U.S. Of that amount, $3.9 billion was in sports-related events.
