The City Council gave prediction-market platforms two weeks to answer questions about marketing to young people. That window closed around August 26. A single, uncorroborated report the same week says a federal regulator subpoenaed a public company over a related investigation.
The New York City Council, under Speaker Julie Menin, launched a formal investigation on August 12 into Kalshi, Polymarket and other prediction-market platforms over marketing practices the council's own announcement calls deceptive and "predatory," reportedly aimed at young New Yorkers. The council gave the platforms 14 days to respond, a deadline landing around August 26. The investigation is well documented, corroborated across multiple independent outlets alongside the council's own press release.
Separately, a single, uncorroborated report says Coinbase was subpoenaed by the CFTC for customer data connected to a Polymarket-linked investigation. No other outlet has corroborated that report, and neither Coinbase nor the CFTC has confirmed or denied it. It should not be read as evidence the CFTC has made any finding against Coinbase.
The two threads matter together because of what each supplies where the other is thin. The city investigation is well documented but limited in reach: a local government body with no jurisdiction over federal commodities regulation. A CFTC subpoena, if accurate, would be the more consequential development, a federal regulator's compulsory-process power directed at a specific company's customer data, but it currently rests on one report. Investors in Kalshi and Polymarket, both private, and in Coinbase, the one publicly traded company named in either report, are weighing a documented local inquiry against an unconfirmed federal one, not two equally solid facts.
What connects them is the platforms' shared exposure. Prediction markets have expanded rapidly into consumer-facing sports and event contracts over the past year, and marketing practices aimed at growing that user base are now the target of at least one confirmed, and possibly a second, regulatory inquiry. Whether the federal report holds up, and what the platforms' actual response to the council's deadline contained, are both still open.
Neither development changes near-term contract pricing or platform operations on its own. The council's investigation carries no disclosed penalty or enforcement mechanism, and a subpoena, even if confirmed, is an investigative step, not a finding of wrongdoing. The two are worth tracking together because they describe scrutiny building from more than one direction, not because either has yet produced a concrete regulatory or business consequence.