The Mechanics
Platforms like eToro (the category pioneer) and Bitget (crypto's leader) let you allocate a fixed sum to copy a trader: their 5% position becomes your 5% position, opens and closes mirrored automatically. Costs come as spreads, profit-sharing (10-20% on some platforms), or management-style fees — always check which model applies before allocating.
Evaluating a Trader Properly
Headline return is the worst single metric — it's usually a leverage artifact. Look instead at: maximum drawdown (a 300% year with 80% drawdown is a coin flip, not a strategy), track length (2+ years minimum, spanning both market directions), consistency of monthly results, position count and risk scores, and whether returns survived the platform's fee layer. Copier counts measure marketing, not skill.
Portfolio Rules for Copiers
Diversify across 3-5 uncorrelated traders rather than one star. Cap any single trader at an amount whose total loss you accept. Use copy-stop-loss features where offered. And expect regression: the trader you found through a leaderboard is there partly through variance, and leaderboard-topping performance mean-reverts with remarkable reliability.