How the board is built
A trader must first clear every minimum, not one of them: Trade PnL, ROI, win rate, Copy Score and completed rounds over the last 24 hours. A board that admitted a trader for a single strong number would mostly promote lucky days. Those who qualify are then scored against each other, and the list is rebuilt every hour from settled rounds only.
The size of the board is whatever the day produced. On a strong day fifty traders may clear the bar; on a quiet one the bar relaxes towards a floor until there are enough to rank, and the page says so when that has happened. The floor stops at a positive profit and a better-than-even win rate, so no relaxation can present a losing trader as a hot one.
Trade PnL is PredCheck’s own figure: the gross trading result net of fees on Polymarket’s 5m, 15m, 1h and 4h crypto markets, with maker fills charged nothing. Account-wide rebates and rewards are reported on each profile but never added in here.