EU Regulator Slams Polymarket and Kalshi Over Insider Trading as Fed Hike Odds Hit 64%

by Editorial Team

ESMA warns prediction markets are 'rife with inside trading,' while hot August CPI data pushes Fed rate hike odds to 64% ahead of next week's meeting.


ESMA Targets Prediction Markets Over Geoblocking and Insider Trading

The European Securities and Markets Authority (ESMA) has issued a stark warning regarding the integrity of decentralized betting platforms. According to the EU regulator, prediction markets are "rife with inside trading." ESMA specifically called out industry leaders Kalshi and Polymarket, questioning their inconsistent geoblocking policies across EU member states and noting that users easily bypass these restrictions using VPNs. Traders tracking these regulatory shifts can monitor platform volume changes using predictionmarketstools.com.

Fed Hike Odds Surge to 64% on Hot CPI Data

Meanwhile, prediction markets are aggressively repricing macroeconomic outcomes following the latest US inflation data. After August's core CPI rose a faster-than-forecast 0.3%, Fed rate hike odds reached 64%. The broader market reaction saw Brent crude top $106 per barrel and Bitcoin slide to $77,120. The shifting probabilities prompted major financial institutions to pivot; late Friday, Goldman Sachs retracted its forecast of no rate hike for next week's meeting, with Fed Chair Kevin Warsh having recently warned that the central bank may need to act.

CLARITY Act Revisions Threaten Non-Decentralized Protocols

On the legislative front, regulatory frameworks for crypto-based trading protocols are tightening. Just five days before a scheduled cloture vote, Senate Republicans posted a revised text of the CLARITY Act. The September 10 substitute bill introduces mandatory CFTC registration and Bank Secrecy Act obligations for trading protocols that are not fully decentralized, a move that could directly impact the architecture of blockchain-based prediction markets by limiting the DeFi title to spot and cash digital commodity transactions.

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