How do Polymarket taker fees affect copy trading?
Polymarket taker fee — A fee on aggressive orders, computed as size × rate × price × (1 − price), that copiers almost always pay.
Copiers take liquidity by definition — they cross the spread to match a fill that already happened — so they pay the taker fee while the source wallet, if it posted a resting order, paid nothing. The fee peaks at 50¢ prices and is highest in crypto markets.
A paper engine that ignores fees overstates every copy. Stratex Hub applies Polymarket's per-category rate on entry and on any exit, solves the share count so cost plus fee equals the intended size, and shows the fee in the ledger.
See it on real wallets
Every wallet page on Stratex Hub shows this measure with the numbers behind it. Start from the re-ranked leaderboard or browse all analysed wallets; the methodology has the formulas.