The Commodity Futures Trading Commission is investigating Polymarket, with the probe focused on the blockchain-based prediction market's internal controls and its advertising activity directed at users in the United States.

Prediction markets allow participants to trade contracts tied to the outcomes of real-world events, and the CFTC — the federal agency that oversees US derivatives markets — has policed such platforms under derivatives rules rather than leaving them to state gambling authorities. That regulatory footing is central to the current inquiry.

Scope of the Inquiry

The investigation has two main threads. The first concerns controls — how Polymarket monitors trading on its platform and prevents abuse. The second concerns marketing — how the company presented itself to American users.

Internal controls of the kind under review typically encompass the surveillance and compliance systems trading platforms use to detect manipulation and other abuse. The CFTC's mandate includes protecting market participants from fraud and manipulation, which places both trading conduct and the accuracy of promotional claims within its remit.

The advertising question traces back to reporting by the Wall Street Journal in June 2026. The newspaper reported that Polymarket paid social media influencers approximately $1.9 million to produce videos showing bets placed on the platform. According to that reporting, many of those bets were not real: about 70% of the videos analyzed showed staged wagers rather than actual trades.

Research indicates the CFTC probe was initiated in June 2026, the same month the Journal's story was published.

Congressional Attention and the Insider Trading Thread

The revelations drew bipartisan attention on Capitol Hill. Senators Adam Schiff and John Curtis raised questions about whether the CFTC has the enforcement capability and consumer protection authority needed to oversee platforms like Polymarket. The two senators asked CFTC Chairman Selig for updates on the investigation by July 10, 2026.

Separately from the advertising review, the CFTC has authorized at least three investigations into potential insider trading tied to Polymarket event contracts. Those inquiries began in May 2026. The markets under scrutiny include contracts on Biden pardons and on Google's 2025 Year in Search statistics. Charges have been filed against multiple individuals in connection with those cases, including a Google employee.

As of late October 2026, no formal charges have been brought against Polymarket itself.

Polymarket's Response

Polymarket has begun internal audits of its promotional practices and has stepped up its compliance efforts, including the creation of a dedicated investigations team of 16 people. That review has included referring cases to regulators. In October 2026, the company's chief marketing officer, Matthew Modabber, was terminated amid the internal review of marketing tactics.

A Familiar Position for Polymarket

This is not Polymarket's first encounter with federal regulators. In 2022, the CFTC fined the company $1.4 million for offering unregistered event contracts to US persons. Scrutiny escalated further in November 2024, when the FBI raided the residence of Polymarket's founder in a matter tied to earlier regulatory conflicts.

The current probe also sits within a broader jurisdictional dispute over who regulates prediction market platforms. State and federal authorities have been at odds over whether prediction markets resemble gambling, which states traditionally police, or trading, which falls under federal derivatives rules. How that dispute is resolved, along with the conclusion of Polymarket's internal audits and the pending insider trading cases, are the open threads to follow as the inquiry develops.