PredCheck maintains a curated universe of active Polymarket traders working short-term crypto markets — the 5-minute, 15-minute, hourly and four-hourly Up or Down markets. Traders are discovered both from the venue’s public crypto leaderboards and from the participant list of every settled short-term market, which is what puts mid-pack and losing traders into the dataset alongside the winners.
A trader counts as active if they have taken part in at least one supported short-term crypto market in the last seven days. Inactive traders drop out of discovery surfaces but keep their profile page, so a returning trader picks up exactly where their record left off.
Every number is calculated by PredCheck from raw fills: the gross trading result, less the fees implied by each market’s published schedule. Rebates and rewards are paid to an account rather than to a market, so they are reported separately rather than added in. Estimated figures are labelled, and unavailable ones say so.