Spain has blocked prediction market platforms Kalshi and Polymarket as it investigates potential breaches of its gambling regulations.
Regulatory Action
The Directorate General for Gambling Regulation (DGOJ) issued the disciplinary order after being unable to contact the firms at their foreign addresses, according to a press release.
“The Ministry of Social Rights, Consumer Affairs, and Agenda 2030 has opened disciplinary proceedings against Polymarket and Kalshi, two prediction platforms where betting takes place, for a possible violation of gambling regulations, as they are allegedly operating in Spain without the required administrative authorization,” the translated release stated. The platforms are expected to remain blocked for three to four months during the proceedings.
“The DGOJ (Spanish Directorate General for Gambling Regulation) reminds the public that in Spain, in line with other European jurisdictions, prediction markets are considered gambling when bets are placed on uncertain future outcomes,” the Ministry of Consumer Affairs wrote. “Therefore, operating them in Spain requires obtaining a specific administrative license.”
Global Scrutiny
Spain joins a growing number of countries that have blocked or banned the prediction market platforms. Last week, Indonesia banned Polymarket, citing its use as gambling. Other Asian countries, including Thailand and India, have also taken steps toward blocking the platforms.
Due to the firms’ lack of proper regulations, Spain’s DGOJ noted their inability to provide guarantees for “identity verification systems, mechanisms to control access to minors and people who are self-excluded or prohibited from gambling, or the supervision standards necessary for the protection of users.”
Market Performance and U.S. Concerns
Polymarket and Kalshi have gained popularity this year, generating over $5 billion and $13.7 billion in monthly trading volumes respectively in May, according to data from Dune.
The platforms’ valuations have also increased. Polymarket is reportedly seeking a $15 billion valuation, while Kalshi recently raised funds at a $22 billion valuation.
Scrutiny has also increased in the United States, particularly due to concerns about insider trading allegations. This includes a group of wallets that profited around $2.4 million on markets related to the Iran War. In April, a U.S. soldier was charged with placing Polymarket bets using confidential information, allegedly earning over $400,000 from predictions about the removal of Venezuelan President Nicolás Maduro.
Last week, House Republicans launched an investigation into both firms, with one congressman stating that “Congressional action may be necessary.”









