Arkham launched Prediction Market Elo on June 29, ranking Polymarket traders by forecasting accuracy, not just PnL.

The highest Elo-ranked trader, “GardenerCx,” has a win rate of 64.3% over 2,644 bets focused on up/down bitcoin markets.

Arkham has launched an Elo style rating system that measures prediction market traders by accuracy and the difficulty of their successful calls.