Where Copy Trading Is Actually Available
Broker-native, platform-native or third party. Each route puts a different party between you and your own orders.
Allocation Models: Proportional, Fixed Lot and Equity Ratio
The same signal produces completely different outcomes depending on how the platform maps the leader position onto your account.
How a Copy Trading Leaderboard Selects Against You
Rank by recent return and the top of the list is whoever took the most risk and got lucky. Survivorship does the rest.