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Polymarket Hits $1B in Annualized Revenue — and Gets a CFTC Investigation on the Same Day

Six weeks after opening its US exchange to the public, Polymarket's annualized revenue surpassed $1 billion on June 26, 2026, with daily trading volume climbing from $50 million in mid-May to over $200 million. The milestone landed the same day CNBC and Bloomberg reported the CFTC is conducting a broad investigation into Polymarket — the same agency currently suing nine states to defend prediction markets in court.

On June 26, 2026, Polymarket crossed $1 billion in annualized revenue — a milestone reached just six weeks after the company removed its US waitlist and opened its QCEX exchange to the general public. Daily trading volume on the regulated US platform climbed from roughly $50 million in mid-May to over $200 million by June 20, with the FIFA World Cup driving a 300% surge in the soccer category alone. For a platform that launched its US exchange to general retail in mid-May 2026, the growth rate is extraordinary. For a sector that barely existed at consumer scale two years ago, the revenue figure is a statement of arrival.

The timing of the good news was awkward. On the same day Polymarket's revenue milestone made headlines, CNBC and Bloomberg reported that the CFTC is conducting a broad investigation into Polymarket's operations. Two US senators — John Curtis and Adam Schiff — had already written to the regulator demanding a probe, citing a Wall Street Journal investigation that alleged Polymarket paid social media creators to promote trading activity through websites designed to resemble its platform, including simulated transactions that did not involve real money. The senators called the allegations 'deeply troubling' and asked whether Polymarket's marketing practices complied with consumer-protection standards. The CFTC confirmed to reporters that an investigation exists but declined to describe its scope.

The structural irony is hard to miss. The CFTC has been suing nine state attorneys general in federal courts across the country to protect Polymarket's right to operate — the agency's most aggressive enforcement posture in years. At the same time, it is now investigating whether the platform it has been defending used deceptive marketing to build the user base that generated the $1 billion revenue figure. These two postures are not necessarily contradictory: the CFTC can simultaneously believe prediction markets are legally permitted under the Commodity Exchange Act and investigate whether a specific platform broke consumer-protection or advertising rules. But it does complicate the clean 'federal regulator vs. state regulators' narrative that has characterized the litigation wave since spring 2026.

What the investigation is actually about matters enormously, and right now the public record is thin. The WSJ allegations are specifically about marketing — staged promotional content, simulated websites, undisclosed influencer deals. That is a different legal question from whether Polymarket's contracts are swaps, whether CFTC has preemption authority over state gambling laws, or whether the exchange's risk controls are adequate. If the investigation stays in the marketing lane, it is an FTC-style consumer-protection matter that does not touch the core prediction-market legal framework. If it expands into market-structure or manipulation questions — the senators' letter also referenced the block-trade announcement from earlier in June — the implications are more significant. The platforms, state attorneys general, and every investor in the sector will be watching how the CFTC draws those lines.

Recent updates


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Kalshi disclosed on August 31 that it suspended North Carolina congressional candidate Laurie Buckhout for three years and fined her $2,589 for trading on her own race — the first publicly known enforcement action against a candidate for prediction market insider trading. Kalshi said it found multiple politicians trading on races they were involved in, including former Congressman George Santos. The Senate had unanimously banned its members and staffers from prediction market trading on April 30. CNN published a major feature on September 24 documenting election officials' concerns about disinformation and insider trading risk from prediction markets as the midterms approach.

Pew Research: Prediction Market Volume Doubled May-July, Sports Now Largest Category

A Pew Research Center analysis published September 23 found that combined monthly trading volume on Kalshi and Polymarket more than doubled from May to July 2026 — rising from $26 billion in May to $53 billion in July — driven primarily by sports contracts. Sports is now the largest trading category on both platforms. During the FIFA World Cup in June and July, Kalshi's monthly sports volume reached $58 billion. Over the same period, Americans wagered roughly $40 billion at licensed sportsbooks — suggesting prediction market sports volume has approached or exceeded licensed sports betting in dollar terms.

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Prediction markets on Kalshi and Polymarket have moved decisively toward Democratic control of both congressional chambers in the 2026 midterms. Democrats are priced at approximately 60% to win Senate control (Republicans 40%) and roughly 90% to win House control as of September 21. Republicans had been at 80%+ in Senate control markets when the market opened in November 2024. The shift began in February 2026 following the Iran war and has accelerated through fall as rising gas prices pushed Trump's approval ratings lower. More than 500 active midterm markets are live across Kalshi and Polymarket combined.