Prediction market traders are using on-site visits to identify election trading advantages, raising concerns about information asymmetry.

As the US midterm elections approach, traders on the Kalshi and Polymarket platforms are seeking trading advantages through on-site visits and data analysis. Douglas Campbell has accumulated over $800,000 in profits on Kalshi, ranking sixth; David Bensoussan has accumulated over $1.5 million in profits on Polymarket, and bet $280,000 on a Democratic victory in the House of Representatives. These on-site investigations have raised concerns about information asymmetry and insider trading; Polymarket has launched an investigation into suspicious trading during the Israeli elections. (Source: Bloomberg)