US Regulators Target Prediction Markets: Inside the CFTC’s Secret Investigations Into Polymarket

Main Facts: The Shadow Over Prediction Markets

The explosive growth of decentralized finance and event-driven wagering has brought intense regulatory scrutiny to the forefront of American politics and finance. Newly uncovered documents obtained via the Freedom of Information Act (FOIA) reveal that the United States Commodity Futures Trading Commission (CFTC) launched at least three previously undisclosed, high-stakes investigations into suspected insider trading on Polymarket, one of the world’s leading prediction market platforms.

Voting records from the CFTC outline a pattern of aggressive, albeit reactive, enforcement interest. In the span of just three months, CFTC Chairman Michael Selig authorized enforcement divisions to subpoena documents, take sworn testimony, and investigate suspicious trading patterns tied to high-profile geopolitical events, presidential pardons, and corporate search rankings.

These revelations cast a long shadow over the prediction market industry, which has exploded in popularity and financial valuation. Polymarket, which faced a US ban on its flagship platform in 2022, engineered a massive regulatory comeback by launching a US-compliant version featuring a restricted set of event contracts in late 2025. The platform’s meteoric rise was further underscored by a recent fundraising round valuing the company at a staggering $21 billion—a round notably led by 1789 Capital, a venture capital firm co-founded by Donald Trump Jr.

Despite their surging popularity, these platforms are increasingly viewed by federal watchdogs as potential Wild West frontiers for insider trading, market manipulation, and the monetization of nonpublic government and corporate data.

Chronology of the CFTC’s Secret Inquiries

The newly unearthed documents map a precise timeline of regulatory mobilization, often occurring in the immediate wake of investigative media reports rather than through proactive algorithmic surveillance by the agency itself.

May 2024–2026: The Biden Pardon Probe

The regulatory dominoes began falling in early May, when CFTC Chairman Michael Selig approved a private investigation order targeting potential insider trading on Polymarket event contracts concerning pardons issued by former President Joseph Biden. The formal greenlight gave the agency’s enforcement division sweeping powers to issue subpoenas, administer oaths, and compel document production.

The investigation followed an NPR report detailing a suspicious Polymarket trader who walked away with over $300,000 in profits during the dying days of the Biden administration. The trader accurately predicted that the outgoing president would issue preemptive pardons to prominent critics of the MAGA movement, including former US Representatives Liz Cheney and Adam Kinzinger, as well as Senator Adam Schiff.

Late May 2026: The Iran War Contracts

Just weeks later, at the end of May, Selig signed off on a second formal investigation order, this time centered on "Iran event contracts" hosted on Polymarket. While the order omitted specific account details, its timing coincided precisely with a broadcast by CBS News’ 60 Minutes. The program exposed a mysterious network of Polymarket accounts that amassed a staggering $2.4 million in profits on Iran-related wagers, boasting an improbable 98% win rate.

July 2026: The Google Search Rankings

The third shoe dropped in July, targeting suspected insider trading surrounding Google-themed event contracts. Internal CFTC email correspondence obtained by WIRED revealed that Paul Hayeck, acting director of the CFTC’s Department of Enforcement, briefed colleagues on a probe targeting "additional individuals who may have engaged in insider trading related to Google’s 2025 Year in Search Ranking."

Crucially, Hayeck noted that the CFTC was operating a "parallel investigation" alongside the US Attorney’s Office for the Southern District of New York (SDNY). The federal market watchdog’s inquiry was kept strictly separate from the high-profile criminal case against Michele Spagnuolo, a former Google engineer independently accused of exploiting internal data for a $1 million Polymarket payday.

Supporting Data: The Broader Ecosystem of Misconduct

The inquiries into Polymarket do not exist in a vacuum. They are part of a wider, systemic reckoning across the entire prediction market ecosystem. Rival platform Kalshi has similarly found itself caught in the crosshairs of federal regulators and internal compliance teams.

According to filings cited by The New York Times, Kalshi has proactively referred at least 32 suspicious trading cases to the CFTC. The symbiotic, yet tense, relationship between these platforms and federal watchdogs has led to direct punitive actions:

• The George Santos Fine: Former US Representative George Santos was slapped with a $35,000 fine by the CFTC for market behavior linked to a Kalshi contract wagering on whether he would attend the 2026 State of the Union address.
• The Lifetime Ban: In tandem with federal scrutiny, Kalshi issued its first-ever lifetime ban against Santos for violating platform rules on market manipulation regarding the same bet, alongside an internal fine exceeding $71,000. Santos escaped criminal charges in this specific instance, but the enforcement action signaled zero tolerance for political figures exploiting platform liquidity.

Furthermore, the CFTC is reportedly conducting a broader corporate-level investigation into Polymarket itself, probing whether the firm’s structural operations fully comply with the rigorous statutory requirements of the Commodity Exchange Act (CEA).

Official Responses and Corporate Defenses

As public pressure mounts, the entities at the center of the storm have adopted a defensive posture, offering carefully worded statements while deflecting direct accountability.

• Polymarket’s Stance: Olivia Chalos, deputy chief legal officer at Polymarket, emphasized the platform’s cooperative relationship with law enforcement in an email to WIRED. "While we do not comment on specific investigations, we regularly refer matters to law enforcement and support ongoing investigations as part of our commitment to protecting the integrity of our markets," Chalos stated.
• Federal Agencies Go Dark: The CFTC repeatedly declined to respond to media inquiries regarding the current operational status of the three newly revealed investigations. Similarly, the Southern District of New York declined to comment on its parallel tracks.
• Corporate Silence: Google declined to comment on the broader marketplace fallout, instead pointing journalists back to a June statement confirming that accused insider trader Michele Spagnuolo was no longer employed by the tech giant.

Implications: A Vulnerable Regulatory Watchdog?

The revelation that the CFTC’s enforcement arm acted primarily in response to mainstream media exposés rather than internal market surveillance has ignited a fierce debate among legal scholars and former federal regulators.

Joseph Konizeski, a former chief trial attorney in the CFTC’s division of enforcement, did not mince words regarding the implications of the leaked documents. "If these investigations are being prompted solely by press reports of potential violations of the Commodities Exchange Act, that’s a significant sign of weakness in this regulatory scheme," Konizeski warned.

This perceived reactive posture feeds into a broader narrative currently plaguing the agency. Throughout the second Trump administration, the CFTC has faced scathing criticism from good-government groups and financial watchdogs for adopting a strikingly permissive, hands-off approach toward the crypto and prediction market industries—an attitude critics attribute to deep-pocketed lobbying and high-level political investments in the sector.

The Road Ahead

Prediction markets have successfully bridged the gap between fringe digital hobbies and mainstream financial instruments, attracting billions of dollars in speculative capital. However, the intersection of real-time political outcomes, corporate earnings, geopolitical conflicts, and decentralized wagering creates a fertile breeding ground for exploitation.

If federal agencies like the CFTC and SDNY cannot transition from reactive investigators—sparked only when 60 Minutes or NPR break a story—to proactive market guardians, the credibility of prediction markets will hang by a thread. For Polymarket, Kalshi, and their billionaire backers, navigating this regulatory minefield will require more than clever legal maneuvering and political fundraising; it will demand a demonstrable commitment to keeping insider trading out of the crystal ball.