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Gaming Edge’s TL;DR
- Prediction market leaders Kalshi and Polymarket moved quickly to tighten trading rules after senators introduced legislation targeting sports contracts.
- These policy changes are meant to reduce insider trading risk but could narrow market offerings and signal increased federal scrutiny.
Kalshi and Polymarket, two of the largest prediction market platforms, announced immediate rule changes after Sens. Adam Schiff (D-Calif.) and John Curtis (R-Utah) introduced the Prediction Markets are Gambling Act.
Kalshi said it would ban political candidates from trading on their own campaigns and pre-emptively block anyone involved in college or professional sports from trading contracts tied to the sports where they play or are employed.
Polymarket implemented a broader prohibition, barring users from trading on any contracts where they might possess confidential information or could influence the outcome – a rule that covers athletes, company officials, policymakers, or others with potential insider access.
The legislative push would specifically bar prediction markets from creating sports-related contracts, increasing legal pressure on the sector.
Companies trying to make legislation unnecessary
These rule changes may mean fewer markets, especially around sports and politically sensitive events, and tighter account vetting. They could also take away votes from the legislation if they look like they’re policing themselves.
Operators could see reduced liquidity in some verticals as participants with domain knowledge are restricted from trading on related contracts. Financially, platforms face higher compliance costs to implement monitoring, the potential loss of high-volume markets, and legal uncertainty if federal law tightens.
Bettors may encounter altered pricing, smaller markets, or geographic restrictions as companies respond. Operators may also shift product mixes toward non-sports or categorical markets, move more services offshore, or intensify lobbying and legal challenges.
Overall, the move prioritizes integrity and insider-risk mitigation but could constrain market depth and user choice.
Based on reporting by Ken Sweet for the Arkansas Democrat Gazette.
