Prediction Markets Regulation: AOC Slams Kalshi & Polymarket

Prediction market leaders Kalshi and Polymarket moved quickly to introduce insider trading guardrails after two U.S. senators introduced legislation that would ban sports event contracts from these platforms. Rep. Alexandria Ocasio-Cortez (D-NY) fired back, calling the new measures “absolutely not enough” and accusing the platforms of using them as “a fig leaf to deflect from criticism.” The clash signals that regulatory pressure on prediction markets is intensifying fast.

New Legislation Targets Prediction Market Sports Contracts

The bipartisan push in Congress

Utah Sen. John Curtis and California Sen. Adam Schiff are leading a bipartisan effort to prevent prediction markets from offering trading on sports events, according to reporting by Gambling911.com [1]. The legislation was introduced on a Monday, and both Kalshi and Polymarket responded the same day with new platform rules. The speed of that response suggests the platforms were already anticipating regulatory action.

The proposed legislation specifically targets sports event contracts, a category that has grown significantly on prediction market platforms. By framing the bill as bipartisan, Curtis and Schiff signal that concern about prediction markets is not confined to one political party. That broad political support makes the legislation harder to dismiss.

The congressional push comes amid wider scrutiny of how prediction markets handle sensitive information. The Guardian previously reported that eight Polymarket accounts bet approximately $70,000 in total on a ceasefire being reached by March 31, while U.S. President Donald Trump was still making public comments doubling down on the war with Iran [1]. That report added fuel to concerns that some traders may be acting on information not available to the general public.

The insider trading concern driving the debate

The core concern from lawmakers is that certain participants, including athletes, politicians, and their associates, could trade on information they possess before it becomes public. Ocasio-Cortez made this point explicitly on X, writing that “staff, advisors, consultants, cabinet secretaries, spouses, and more” could all trade on insider information [1]. Her argument is that the platforms’ current guardrails address only the most obvious cases while leaving a wide range of potential insider traders unchecked.

As of the Monday night referenced in the source reporting, approximately $23 million had been bet on a March 31 ceasefire contract, with nearly 85% of that money backing the “NO” outcome [1]. That scale of trading activity illustrates why lawmakers view these markets as significant enough to regulate.

Kalshi and Polymarket Respond With New Guardrails

What Kalshi announced

Kalshi said it would ban political candidates from trading on their own campaigns [1]. The platform also said it would preemptively block anyone involved in college or professional sports from trading contracts related to the sports they play or are employed by. Bobby DeNault, Head of Enforcement and Legal Counsel at Kalshi, described the move in a blog post published to the company’s site.

“We’re launching new technological guardrails that preemptively block politicians, athletes, and other relevant people from trading in certain politics and sports markets,” DeNault wrote [1]. He added that “these efforts, which have been in the works for months, proactively address the CFTC’s guidance and Congressional bill proposals to prevent insider trading.” The claim that the work had been underway for months is notable, as it positions Kalshi as acting ahead of, rather than in reaction to, congressional pressure.

What Polymarket announced

Polymarket took a broader approach than Kalshi. The company rewrote its rules to state clearly that users cannot trade on contracts where they might possess confidential information or could influence the outcome of an event [1]. That definition would cover athletes but could also extend to company officials, policymakers, or anyone with enough influence to affect an event’s outcome or know relevant information in advance.

The wider scope of Polymarket’s rule reflects a different philosophy: rather than listing specific categories of banned traders, the platform created a principle-based standard. Whether that standard is enforceable in practice is a question the source material does not answer, and it is one that critics like Ocasio-Cortez appear to be raising.

How Kalshi and Polymarket Guardrails Compare

The table above is drawn directly from the platform announcements reported by Gambling911.com [1]. Kalshi’s approach is more targeted, naming specific groups. Polymarket’s approach is wider in theory but relies on users self-identifying as having insider knowledge, which critics may argue is difficult to enforce.

Ocasio-Cortez’s criticism applies to both platforms. Her list of individuals who could possess insider information, including staff, advisors, consultants, cabinet secretaries, and spouses, goes well beyond the categories either platform has explicitly addressed [1]. That gap is the central point of her argument.

What This Regulatory Battle Means for Online Bettors

Prediction markets and online betting platforms operate in overlapping regulatory territory, and the scrutiny being applied to Kalshi and Polymarket reflects a broader trend of lawmakers examining how financial and wagering products handle sensitive information. For anyone who participates in online betting or prediction-style markets, the direction of travel here is toward stricter rules about who can trade on what, and when.

The specific concern about insider information is relevant to any platform where outcomes can be influenced by participants. Fast payout online casinos operate under licensed frameworks with established responsible gambling standards, which is a different regulatory context from the largely unregulated prediction market space currently under congressional fire.

Key Takeaways

• Sen. John Curtis and Sen. Adam Schiff introduced bipartisan legislation targeting sports event contracts on prediction markets [1].
• Kalshi banned political candidates from trading on their own campaigns and blocked sports participants from trading related contracts [1].
• Bobby DeNault, Head of Enforcement and Legal Counsel at Kalshi, stated the guardrails “have been in the works for months” [1].
• Polymarket rewrote its rules to prohibit trading by anyone who possesses confidential information or could influence an event’s outcome [1].
• Rep. Alexandria Ocasio-Cortez called the new measures “absolutely not enough” and described them as “just a fig leaf to deflect from criticism” [1].
• Eight Polymarket accounts bet approximately $70,000 in total on a March 31 ceasefire while Trump was publicly commenting on the Iran conflict, according to a previous Guardian report cited in the source [1].
• As of the Monday night referenced in the article, approximately $23 million had been bet on a March 31 ceasefire contract, with nearly 85% backing the “NO” outcome [1].

Frequently Asked Questions

The Bottom Line

The guardrails introduced by Kalshi and Polymarket represent a direct response to congressional pressure, but Rep. Alexandria Ocasio-Cortez’s criticism makes clear that many lawmakers do not view these steps as sufficient. Her argument, that the rules address only the most visible insider trading risks while leaving a wide range of connected individuals free to trade, is a substantive policy challenge that neither platform has fully answered.

With Sen. John Curtis and Sen. Adam Schiff pushing bipartisan legislation, and with the Polymarket ceasefire betting controversy adding real-world weight to the insider trading concern, the regulatory pressure on prediction markets is unlikely to ease. The platforms have moved quickly, but the political momentum appears to be moving faster.

Sources

1. [1]: Gambling911.com – Original reporting on Kalshi and Polymarket guardrails, AOC criticism, congressional legislation, and Polymarket ceasefire betting controversy