Senator Elizabeth Warren plans to initiate a crackdown on prediction markets upon assuming the chair of the Senate Banking Committee in January. Her agenda aims to address what her aides describe as a lack of oversight in the sector, specifically targeting potential insider trading and platform manipulation.

The senator intends to utilize the committee’s investigative powers to scrutinize platforms such as Kalshi and Polymarket. This follows a bipartisan letter sent on October 28 by Warren and Senator John Curtis to the CEOs of these companies, requesting details on how they prevent candidates and campaign staff from trading on election contracts.

The inquiry was prompted by reports of candidates betting on their own races and allegations of wash trading and volume manipulation. While Kalshi stated it proactively blocks campaign staff from trading, the upcoming leadership change in the committee signals a shift toward stricter federal oversight of these event-based contracts.

Warren’s broader legislative agenda includes oversight of cryptocurrency ventures, AI chip export controls, and efforts to cap credit card interest rates. Her position as chair will grant her subpoena power, which analysts suggest could lead to formal hearings regarding the regulation of prediction markets.