A BBB advertising watchdog escalated its review of Kalshi after the prediction market platform declined to participate in an inquiry into influencer disclosure practices. The Better Business Bureau’s (BBB) National Advertising Division (NAD) is referring prediction market platform Kalshi to regulatory authorities after the company declined to participate in an inquiry into its social media advertising practices, adding another layer of scrutiny to the fast-growing event trading platform. In a statement published Monday, NAD said it will refer the matter to the appropriate regulatory authorities, including relevant state Attorneys General, for possible enforcement action. The inquiry examined whether Kalshi’s influencers and affiliates clearly disclosed paid relationships in social media promotions and whether the company took adequate steps to comply with Federal Trade Commission endorsement guidelines. Read more
Spain joined a growing list of national authorities restricting or banning prediction market platforms amid concerns over unlicensed gambling activities. Spain’s gambling regulator blocked local users from Polymarket and Kalshi “as a precautionary measure” as authorities there address allegations the prediction markets platforms were in violation of gambling laws. On Tuesday, Spain’s Directorate General for the Regulation of Gambling (DGOJ) said the country’s Ministry of Social Rights, Consumption, and Agenda 2030 had opened legal proceedings against the two companies, as they appeared to be operating without necessary licensing. The DGOJ issued an order blocking Spanish users from Kalshi and Polymarket until the proceedings were resolved, expected in three to four months. “The DGOJ wishes to remind the public that, in Spain — in line with other European jurisdictions — prediction markets are deemed to constitute games of chance when bets are placed on uncertain future outcomes,” according to a Tuesday notic...
"We’re not going to be outspent or out-organized by entrenched interests protecting their monopolies," said John Bivona, head of government relations at Kalshi. Kalshi has backed a new lobbying group for prediction markets called Americans for Fair Markets, which has tapped former deputy White House chief of staff Taylor Budowich as its strategic advisor. Kalshi said on Friday that the organization is positioning itself against sportsbooks and casinos, which it claims are “focused on protecting their monopolies and seeding lies about prediction markets to policymakers.” Americans for Fair Markets, which Kalshi said was launched with its support, would join a broader lobbying push that includes the Coalition for Prediction Markets, an advocacy group for prediction markets launched in December 2025, backed by Coinbase, Crypto.com, and Robinhood. Read more
Representative James Comer asked CEOs of two major prediction market companies for information on their responses to insider trading after “suspiciously timed trades” related to US military actions against Iran. Update (May 22 at 7:40 pm UTC): This article has been updated to include statements from Polymarket and Kalshi. The chair of the US House of Representatives’ Oversight and Government Reform Committee sent letters to the CEOs of Kalshi and Polymarket, questioning the companies’ response to incidents of insider trading on the platform. In a Friday X post, Committee Chair James Comer confirmed reports that he had sent letters to Polymarket CEO Shayne Coplan and Kalshi CEO Tarek Mansour, asking them for internal records on how the companies were handling insider trading. The Kentucky lawmaker said there were concerns in Congress over elected officials using “basic insider knowledge” to profit off the government’s actions. Read more
The Commodity Futures Trading Commission has urged the Sixth Circuit Court of Appeals to rule that the agency has jurisdiction over prediction markets. The US Commodity Futures Trading Commission has backed Kalshi in the company’s legal fight against the state of Ohio, asking an appeals court to affirm that the regulator has jurisdiction over prediction markets. The CFTC filed an amicus brief in the Sixth Circuit Court of Appeals on Tuesday, accusing Ohio of “jurisdictional overreach” after state authorities told Kalshi last year to stop offering sports event contracts in the state, calling them unlicensed sports gambling. Kalshi sued Ohio authorities in October, seeking to have a federal court stop the Ohio Casino Control Commission and the state attorney general from taking action, but the court denied the request in March, leading Kalshi to appeal the decision. Read more
Fresh capital from top Wall Street and Silicon Valley firms signals increasing confidence in regulated event trading and retail prediction markets. Prediction marketplace Kalshi has reached a $22 billion valuation after closing a $1 billion Series F funding round, underscoring growing venture capital appetite for prediction markets amid surging retail adoption. The new valuation doubles Kalshi’s worth from just five months ago. The funding round was led by Coatue Management, with participation from Andreessen Horowitz, Sequoia Capital, Morgan Stanley and Ark Invest. The raise comes as investors increasingly view prediction markets as one of the fastest-growing segments of digital finance. Andreessen Horowitz’s crypto unit, a16z crypto, recently raised $2.2 billion for its latest fund and identified prediction markets as a major investment theme. Read more
Brazil has blocked 27 prediction market platforms, including Kalshi and Polymarket, as new rules classify many contracts as gambling. Brazilian authorities have moved to shut down 27 prediction market platforms, including Kalshi and Polymarket. The decision, announced Friday, follows a directive from the Ministry of Finance and enforcement by the National Telecommunications Agency (Anatel), according to state-owned news outlet Agência Brasil. Authorities claimed that such services fall outside Brazil’s current legal framework and therefore operate illegally. “We have been monitoring the evolution of this sector in Brazil, which suffered a period of anarchy because there were no rules, no oversight, from 2018 to 2022,” Finance Ministry executive secretary Dario Durigan reportedly said during a press conference at the Palácio do Planalto. Read more
Wisconsin’s lawsuit against Kalshi, Robinhood, Coinbase, Polymarket and Crypto.com deepens the battle between state gambling enforcers and federal regulators over sports prediction markets. Wisconsin’s top law enforcement official has sued a group of fintech and crypto platforms, including Kalshi, Robinhood, Coinbase, Polymarket and Crypto.com, accusing them of facilitating illegal sports betting by offering “event contracts,” according to complaints filed April 23 in Dane County. Attorney General Josh Kaul is seeking preliminary and permanent injunctions to block the companies from offering sports-related markets to customers in Wisconsin and to have a court declare the operations unlawful under state gambling law and a public nuisance. The case adds to a growing clash between state gambling laws and federally regulated prediction markets, as regulators and courts across the United States debate whether event contracts are financial instruments or illegal wagers. Read more