Polymarket expands integrity rules across DeFi and U.S. markets, banning insider and manipulative trading

Polymarket has published upgraded market integrity rules covering both its DeFi platform and its CFTC‑regulated U.S. exchange, tightening bans on insider trading and market manipulation and adding enhanced surveillance, National Futures Association (NFA) oversight and formal whistleblower channels ^{[1] [2]}.

The new rules explicitly prohibit trading on confidential, stolen or improperly obtained information and outlaw manipulative tactics such as spoofing, wash trading and front‑running; Polymarket says both its decentralized venue and its U.S. exchange will deploy advanced monitoring systems to enforce the measures ^[3].

Observers note the changes are intended to boost accountability and could attract institutional participants, while also carrying the risk of alienating some crypto‑native users who favour minimal platform controls ^[4].

Polymarket frames the package as combining blockchain transparency with surveillance technology to improve market integrity across its platforms ^{[1] [3]}.