Prediction Market Act of 2026: What It Means for Polymarket Traders

The Prediction Market Act of 2026 is the first federal law specifically written for prediction markets. Introduced by Senators Gillibrand and McCormick, it creates oversight rules for platforms like Polymarket and Kalshi while banning politicians from using inside information to profit. Here's what it covers and how it affects traders.

Why This Bill Exists

Three things happened in early 2026 that made Congress act:

The military insider trading case. U.S. Army Master Sgt. Gannon Ken Van Dyke used classified intelligence about the Venezuela-Maduro raid to place $33,000 in bets on Polymarket, winning over $400,000. The DOJ charged him with five felonies. Full details in our insider trading rules breakdown.

Political candidates betting on themselves. Kalshi suspended and fined one Senate candidate and two House candidates in April 2026 for insider trading on their own campaigns. NPR later reported that campaign staffers from both parties admitted to earning thousands by betting on candidates using internal polling data and strategy information.

Growing market size. Polymarket processes over $2 billion annually and holds the largest share of prediction market activity. When markets get that big, Congress pays attention.

What the Senate Already Did

Before the Prediction Market Act was introduced, the Senate took immediate action. On April 30, 2026, senators unanimously passed a rule banning all senators and Senate staff from trading on any prediction market. The rule was proposed by Republican Bernie Moreno (OH) and amended by Democrat Alex Padilla (CA).

Key details:

• Scope: Applies to all 100 senators and their staff
• Effective date: Immediately upon passage
• Platforms covered: All prediction markets including Polymarket, Kalshi, and any future platforms
• Enforcement: Violations handled through the Senate Ethics Committee

On May 4, Chuck Schumer publicly urged the House and the White House to adopt identical bans. As of May 2026, the House has not yet acted, but the bipartisan nature of the Senate vote suggests a House rule is likely.

What the Prediction Market Act Covers

The Gillibrand-McCormick bill goes beyond the Senate's internal trading ban. It's structured around three main areas:

1. Federal Regulatory Framework

The Act establishes how prediction markets should be regulated at the federal level. Until now, platforms operated under a patchwork of CFTC guidance, state gambling laws, and self-regulation. This bill replaces that with a single, clear framework.

Area	Before the Act	Under the Act
Federal oversight	CFTC guidance and DCM approvals	Explicit statutory authority for the CFTC
Insider trading	Covered under general fraud rules (Rule 180.1)	Prediction market-specific prohibitions
Political trading	Platform-level rules only	Federal ban on using non-public government info
Consumer protections	Varied by platform	Standardized fraud protections

2. Insider Trading Prohibitions

The Act specifically targets people who use their positions to profit on prediction markets:

• Government officials cannot trade on markets where they have access to non-public information
• Political candidates and staff cannot trade on election-related markets
• Military and intelligence personnel cannot trade on markets related to national security or foreign policy operations
• Corporate insiders cannot trade on markets related to their companies' actions

These rules apply to all federally regulated prediction market platforms, not just Polymarket.

3. Consumer Protections

The bill introduces fraud safeguards for retail traders:

• Platforms must maintain transparent market surveillance programs
• Mandatory disclosure of fees, risks, and market mechanics
• Protection against market manipulation
• Clear resolution and dispute processes

Other Congressional Activity

The Prediction Market Act isn't the only legislation in play. Several other bills and regulatory pushes are moving through Congress:

Schiff-Curtis Bill. Senators Adam Schiff (D-CA) and John Curtis (R-UT) introduced separate legislation targeting prediction market manipulation. Their bill would also ban sports prediction market contracts entirely.

Democrats' CFTC Push. A group led by Senator Jeff Merkley (D-OR) called on the CFTC to issue rules addressing what they called "the rapid erosion of integrity" in prediction markets. They want the CFTC to prohibit certain types of event contracts, especially those involving violence or death.

State-Level Action. A federal appeals court ruled in April 2026 that New Jersey could not bar Kalshi from offering sports-related contracts. This ruling strengthened the federal government's role in regulating prediction markets over state regulators.

How This Affects Your Trading

If you're a regular trader on Polymarket using public information, the practical impact of the Prediction Market Act is small. You can still:

• Trade on any market using publicly available data, news, and your own analysis
• Buy and sell shares in political, crypto, sports, and other markets
• Use all available trading tools including limit orders and the API

What changes for some traders:

• Government employees should review whether their roles create conflicts of interest with any markets they trade
• Political campaign workers should avoid trading on election-related markets
• Anyone with access to non-public information about a market's outcome should not trade that market

The rules are designed to protect market integrity, not to restrict regular trading activity.

Polymarket's Response

Polymarket had already built much of the compliance infrastructure the Act requires. The platform operates as a CFTC Designated Contract Market, runs KYC verification for U.S. users, and maintains a three-tier surveillance system through the National Futures Association.

The company has publicly supported reasonable regulation. Polymarket's position has been that clear rules help the industry grow by building trust with traders and regulators.

For more on how Polymarket handles compliance and safety, see our Is Polymarket Legit? page.

What Happens Next

The Prediction Market Act still needs to pass through committee, a full Senate vote, and the House before becoming law. The bipartisan co-sponsorship (Gillibrand is a Democrat, McCormick is a Republican) improves its chances, but the timeline is uncertain.

Regardless of whether the full Act passes, the momentum is obvious. The Senate trading ban is already in effect. The DOJ is prosecuting insider trading cases. The CFTC is actively regulating platforms. Prediction markets are being treated like financial markets, and the rules reflect that.

For traders, the best approach is straightforward: trade on what you know from public sources and stay away from markets where you have inside information. The platforms are getting better at detecting violations, and the penalties are serious.

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