Kalshi, a prediction market platform, has issued its first public insider trading penalty, fining YouTube editor Artem Kaptur $20,397.58. Kaptur, who works for MrBeast, invested $4,000 in contracts related to MrBeast's YouTube events, earning $5,397.58. This incident prompted the U.S. Commodity Futures Trading Commission (CFTC) to issue an enforcement advisory, highlighting the regulatory challenges in prediction markets. Kalshi's KYC system facilitated the identification of Kaptur, leading to the forfeiture of his gains and a $15,000 fine. Meanwhile, on Polymarket, a platform without identity verification, insider trading suspicions arose as the winning probability for a contestant in MrBeast's "Beast Games" surged to 94% weeks before the finale. This highlights the potential for insider trading in decentralized markets, where anonymity complicates enforcement.