On-chain data platform Arkham evaluates Polymarket traders based on prediction accuracy

On November 9, according to disclosures by Arkham, the platform evaluates Polymarket traders using Elo ratings in addition to profit and loss. The scoring is based on prediction accuracy rather than bet size, and successfully predicting low-probability events yields higher scores.

Arkham stated that the currently highest-rated trader is roberto73, with an Elo score of 2489 and a win rate of 49.7% across 3,245 bets.