Polymarket's offshore platform saw over $600 million in post-election trading volume on two global election markets, with nearly all activity concentrated on long-shot candidates who did not win. Former trader Chris Park revealed that about $284 million of this came from pairs of accounts repeatedly trading with each other, suggesting possible wash trading or coordinated manipulation.
Background
Prediction markets like Polymarket and Kalshi have gained prominence as alternatives to traditional polling, but concerns about market integrity persist. Wash trading—where parties trade with each other to inflate volume without genuine market interest—is a known issue in both financial and prediction markets.
- Source
- Ars Technica
- Published
- Oct 16, 2026 at 10:19 PM
- Score
- 6.0 / 10