Prediction markets enforce new insider trading bans

TLDR

Major crypto prediction markets are rolling out explicit insider trading bans and surveillance to satisfy regulators and keep operating at scale.

1. Polymarket and Kalshi now explicitly prohibit trading on stolen info, illegal tips, or by people who can influence an events outcome.
2. These changes respond to CFTC guidance, high profile war bet scandals, and a new US Senate bill targeting sports and casino-style event contracts.
3. For users, markets should become fairer but more heavily monitored, and some high-volume categories like sports could be curtailed or moved offshore.

Deep Dive

1. What The New Bans Actually Do

Polymarkets updated rulebooks for its DeFi site and its US exchange clearly outlaw three insider behaviors: trading on stolen confidential information, trading on illegal tips, and trading when you can influence the outcome itself, such as a coach betting on their own game or a politician on their own race. These rules sit alongside bans on spoofing, wash trading, front running, self dealing, and other manipulation, with enforcement ranging from wallet bans on Polygon to suspensions and fines on the US venue under National Futures Association oversight. Kalshi is going further by preemptively blocking athletes, coaches, referees, and political candidates from trading on markets tied to their own sports or campaigns, so some insiders are screened out before they ever place an order. Together, these platforms are treating insider trading and manipulation much more like traditional regulated derivatives venues than like casual betting sites, as covered by outlets such as Decrypt and Cointelegraph.

2. Why This Is Happening Now

Several scandals accelerated the crackdown, including wallets making about 1 million dollars on Polymarket from correctly timing US and Israeli military strikes and other geopolitical events that looked suspiciously like trades on non public information. At the same time, the CFTC issued its first staff guidance on insider trading in event contracts and ramped up supervision of Designated Contract Markets like Polymarket US and Kalshi. In parallel, US Senators Adam Schiff and John Curtis introduced the Prediction Markets Are Gambling Act, which would ban CFTC regulated platforms from listing sports and casino style markets, explicitly citing integrity and consumer protection concerns.

3. How This Affects Crypto Users

For regular users, the immediate changes are tighter terms of use, more surveillance, and clearer grounds for bans if you trade on non public information or try to manipulate prices. Some categories that regulators view as especially risky, like granular sports props or sensitive geopolitical events, may see stricter listing standards or be restricted to offshore DeFi front ends. Longer term, prediction markets that successfully enforce these bans could attract more institutional and professional flow, potentially increasing liquidity in the contracts that remain allowed. The flip side is higher compliance risk: US based users might see specific markets delisted or access limited if the Senate bill or similar state actions succeed.

Conclusion

Prediction markets are moving away from a lightly policed, gambling style model toward something that looks more like regulated derivatives trading, with explicit insider trading bans and formal surveillance. That should improve fairness and institutional credibility, but it also means heavier monitoring and a real risk that parts of the market, especially sports and controversial geopolitical contracts, are squeezed or pushed offshore. For crypto users, the edge increasingly comes from being fast and informed within transparent rules, not from trading on private information.