Ex-US lawmaker George Santos permanently banned from trading on Kalshi

Prediction market startup Kalshi permanently banned former US congressman George Santos from its platform on Monday and imposed a penalty of US$71,356 (HK$556,576.8), citing insider trading activity.

The company said in a disciplinary action that its compliance department had found reasonable cause to believe the former lawmaker engaged in illicit trading.

The move comes as prediction market platforms Kalshi and Polymarket have seen a rise in suspicious trading activity, presenting new compliance challenges as regulators and law enforcement intensify scrutiny of the growing sector.

Kalshi had reported Santos to the US Department of Justice in June after detecting suspicious trading activity from his account on the platform, a source told Reuters at the time.

Santos was expelled from Congress over fraud and identity theft. US President Donald Trump commuted his over-seven-year prison sentence last year.

Reuters

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