Congress Moves to Neutralize Insider Alpha in Prediction Markets

Representatives Adrian Smith (R-Nebraska) and Nikki Budzinski (D-Illinois) introduced the Preventing Real-time Exploitation and Deceptive Insider Congressional Trading (PREDICT) Act on Wednesday. The bipartisan legislation prohibits members of Congress, the President, and federal appointees from trading prediction market contracts tied to policy outcomes. Violations carry a 10% civil penalty on the total contract value and mandatory forfeiture of all trading profits to the U.S. Treasury.

Policy as Material Non-Public Information

The legislation treats prediction markets as financial instruments subject to insider trading rules. Platforms like Kalshi and Polymarket have scaled into billion-dollar venues, with contracts on elections and Federal Reserve decisions attracting both institutional hedgers and retail speculators. Knowledge gained in closed-door briefings now constitutes material non-public information when used to trade these outcome contracts.

Lawmakers are responding to reports of trades placed seconds before major policy announcements. Industry observers have flagged large bets on military actions and regulatory shifts that appeared timed with non-public government information.

Platform Responses and Enforcement Challenges

Regulated platforms have already begun tightening controls. Kalshi, which operates under CFTC oversight, announced enhanced anti-insider trading measures in March. Polymarket updated its rules to flag contracts involving U.S. officials and prohibited trading based on confidential information.

Enforcement faces structural hurdles on decentralized networks. Centralized platforms like Kalshi can restrict accounts directly, but venues like Polymarket rely on pseudonymous wallets. Identifying and penalizing trades by officials post-hoc would require advanced blockchain forensics or new protocol-level compliance requirements. Decentralized platforms have historically resisted such measures.

The CFTC signaled its stance in a February advisory, asserting authority over prediction market practices. The agency highlighted “suspicious timing” around policy announcements and laid the groundwork for applying insider trading principles to event contracts.

Liquidity and Market Structure Implications

Excluding information-privileged participants is expected to shift liquidity toward retail traders and algorithmic strategies. Kalshi Research noted in a March report that removing these participants could increase short-term volatility while potentially improving long-term price discovery.

The legislation’s scope extends to senior executive branch officials and certain contractors. Prediction markets’ sub-second settlement removes the natural friction found in traditional equity markets, making the information advantage particularly acute.

Chain Street’s Take

The PREDICT Act represents the institutionalization of prediction markets. Congress is no longer treating policy-outcome contracts as harmless speculation: it’s applying the same legal severity used in equity insider trading.

For allocators who once relied on political proximity for “easy alpha,” that edge is being legislated away. What remains is algorithmic edge and sophisticated sentiment analysis. The deeper question is structural: can truly decentralized protocols coexist with effective insider trading enforcement?

If regulators ultimately require KYC at fiat on-ramps or post-hoc asset clawbacks, U.S. policy markets will likely move toward regulated intermediaries. A shift from purely decentralized to regulated-but-on-chain infrastructure could define the next phase of the industry. The PREDICT Act determines the type of prediction markets America is willing to tolerate.