CFTC Opens Investigation Into Polymarket Over Wash Trading as Kalshi Faces Michigan Ban

According to ChainCatcher and BBX data, the U.S. Commodity Futures Trading Commission (CFTC) launched an investigation into Polymarket yesterday (July 1), examining its social media activity and suspected wash trading behavior. Simultaneously, a Michigan court banned Kalshi from offering sports betting services to state residents, delivering a dual regulatory blow to the prediction market ecosystem.

Both actions directly target Polymarket and Kalshi but carry significant implications for Robinhood Markets, which offers event contract products linked to KalshiEx and ForecastEx through its subsidiary Robinhood Derivatives LLC—currently the largest regulated broker distribution channel for prediction markets in the U.S. The CFTC's enforcement escalation will directly impact Robinhood's event contract compliance framework and product expansion pace. June saw the sector reach record-high daily trading volumes.