Politico reported on November 10 that the U.S. Commodity Futures Trading Commission (CFTC) has privately warned Kalshi, the largest prediction market platform, that it could soon face charges. The investigation has been open for months and examines whether the company properly notified the agency before listing dozens of new contracts. No specific penalties have been disclosed so far.

Kalshi is downplaying the warning. Spokesperson Elisabeth Diana described the matter as a procedural error in how the company submitted a handful of contracts, many of which never went live, and said Kalshi is already addressing the issue.

Self-Certification Is at the Center of the Probe

The investigation centers on self-certification, a fast-track process that allows designated contract markets to list new products as soon as the next day without explicit CFTC approval. Under the framework, an exchange files a certification confirming that a contract meets agency rules, including a low risk of manipulation, and the market can then go live. The mechanism is a routine feature of CFTC-regulated exchange oversight, and the probe concerns whether Kalshi's specific filings met its terms rather than the framework itself.

Kalshi's growth strategy relies heavily on the speed with which new contracts can be listed, and its rapid listing cadence is built on this framework. The pace of new product launches on the platform accelerated after a 2024 court win against the CFTC, which opened the door to more event-based contracts.

The CFTC Flagged Bundled Filings Twice This Year

The paperwork-error argument may carry limited weight, given that the regulator has already warned exchanges about the practice. On March 12, the CFTC's Division of Market Oversight issued Staff Letter No. 26-08, outlining concerns about broad contract specifications that may not pass the agency's rules.

A second warning followed on July 24 in Staff Letter No. 26-22, which stated that exchanges were continuing to self-certify filings that bundled multiple contract variations and settlement sources into a single submission. According to the agency, the practice makes it difficult to assess and verify whether the required supporting analysis has been provided. If Kalshi used a similar filing structure, an enforcement action would follow warnings the CFTC has already placed on record.

Polymarket Is Under Review Again

Kalshi is not the only prediction market platform under close CFTC scrutiny. Reuters reported on October 27 that its biggest rival, Polymarket, is being examined again for whether the platform broke its January 2022 settlement, under which it paid a penalty of $1.4 million and agreed to keep U.S. users away from its main offshore platform. The CFTC and the Justice Department closed similar investigations in 2025 without filing charges. The renewed review concerns geolocation controls and U.S. advertising. With Kalshi's warning still private, the two largest platforms in the sector now face open regulatory questions at the same time.

Washington's Posture Has Shifted After the Midterms

Democrats won both chambers of Congress in the November 3 midterms and are preparing to oversee the industry more aggressively in the next Congress. CNBC counted nearly 30 prediction market bills introduced since 2025, most of them sponsored by Democrats.

The CFTC, now led by Chair Michael Selig as its sole commissioner, has spent most of 2026 defending prediction markets against states such as Arizona and Utah, both of which have filed criminal charges against Kalshi. Kalshi has pushed back: on November 9, it joined Coinbase and four other firms in seeking to file a brief backing the CFTC in a separate dispute over perpetual futures tied to U.S. stocks. The near-term markers for the sector are whether the CFTC converts its private warning into a public complaint against Kalshi and how the incoming Congress translates its oversight plans into action.

An enforcement case against the sector's largest exchange would allow the agency to demonstrate it can police the industry before a Democratic Congress weighs in. For Kalshi, the contracts in question may matter less than the precedent: even a modest settlement could push exchanges toward slower, contract-by-contract filings, and listing speed is what much of the sector's growth was built on.