Your position may be larger than the Copy Leader’s because BitMEX adjusts Copier position sizing using cross margins to reduce liquidation risk, adapts leverage to your account balance and allowed margin, and ensures you assume the same proportional risk as the Copy Leader.
What Causes a Copier’s Position to Be Larger Than the Copy Leader’s?
BitMEX Copy Trading adjusts your position size to maintain proportional risk parity with the Copy Leader. This means your absolute position size in contracts may differ from the leader’s, even though the risk exposure relative to your account balance remains equivalent.
Three factors drive this adjustment:
Cross margin position sizing. Your position sizing is adjusted because cross margins reduce liquidation risk. By using the full available balance as collateral, cross margin mode allows for larger position sizes while maintaining a lower probability of liquidation.
Leverage adaptation. Your leverage is adapted to match your account balance against BitMEX’s allowed margin requirements. If your balance differs from the Copy Leader’s, the system recalculates the appropriate leverage and position size to keep your risk exposure aligned.
Proportional risk matching. The Copier assumes the same risk as the Copy Leader’s position. BitMEX ensures the ratio of position size to account balance mirrors the leader’s ratio, not the leader’s absolute position size. This means a Copier with a larger balance will hold a proportionally larger position.
These adjustments are automatic and by design. They ensure that every Copier takes on equivalent risk relative to their own capital.