The New York City Council is investigating Coinbase, Kalshi, Polymarket and Gemini over alleged deceptive prediction market advertising, opening a consumer-protection inquiry into how the platforms market their products to users.
What triggered the NYC Council probe
The scrutiny centers on the marketing tactics used by prediction market and crypto platforms, and the potential social harms tied to those ads, according to the NYC Council. For related coverage, see SEC to Discuss Easing Crypto Rules at August 2026 Meeting.
The inquiry names four companies: Coinbase, Kalshi, Polymarket and Gemini. It groups crypto exchanges alongside prediction market operators under a single line of questioning about advertising conduct. For related coverage, see Goldman Sachs NEOS Deal Adds Bitcoin Income ETF Business.
Reporting on the probe framed the Council's focus as the platforms' marketing tactics and their social harms, as described by The Washington Post. The core allegation is that the ads were deceptive.
Why the ad scrutiny matters for users
Because the allegation targets advertising rather than a single product failure, it speaks directly to the expectations platforms set for users before they trade or bet.
The mix of named firms broadens the story beyond any one company. It ties established crypto exchanges to prediction market operators under the same question of whether promotional claims mislead consumers.
Kalshi in particular has drawn repeated regulatory attention, including when the platform referred suspected insider traders to the CFTC and when the CFTC ordered it to keep operating amid a New York damages claim. The advertising probe adds a city-level dimension to that existing pressure.
What the probe could mean for the four firms
A city-level inquiry can create reputational and compliance pressure even before any formal penalty, since the questions themselves put the platforms' marketing on the record.
With the case centered on advertising conduct, changes to ad claims, disclosures and risk language are a likely focus for the named companies. Coinbase, which has faced separate scrutiny including a council warning over long-term Bitcoin risks, is among those now answering questions about how it promotes its products.
The broader signal is a measured one. The probe reflects scrutiny of crypto and prediction market advertising, and its practical consequences depend on what the Council's review ultimately finds.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.