§ feed · storyline
Kalshi flags 400+ suspicious trades this year, double 2025 total
Kalshi has flagged over 400 suspicious trades year-to-date, more than double its full-year 2025 total, as Polymarket reports a similar uptick in irregular activity.
Anirban Sen / Reuters: Sources: Kalshi has probed and flagged 400+ suspicious trades YTD, more than 2x the number it investigated in all of 2025; Polymarket has seen a similar uptick — Top prediction market platforms Kalshi and Polymarket have witnessed a surge in suspicious trades this year …
§ sources1 publication · timeline below