Massachusetts regulators are investigating Robinhood's new prediction market service, Kalshi, issuing a subpoena for information. The probe, led by Secretary of the Commonwealth Bill Galvin, focuses on the number of Massachusetts users and Robinhood's marketing strategies for the platform. Galvin has publicly criticized Kalshi, calling it a "trick" that diverts investors from more reliable investment options. Regulators aim to assess the potential risks Kalshi poses to Massachusetts investors. Robinhood has until April 3rd to comply with the subpoena. This investigation adds to the regulatory scrutiny surrounding prediction markets and Robinhood's expansion into new financial products. The outcome could influence the future availability of similar platforms in Massachusetts and potentially other states. ```