OKX will adjust the calculation methods for Initial Margin Requirement (IMR) and Maintenance Margin Requirement (MMR) for futures under cross-margin hedge mode. The system will no longer simply add the margin requirements for the long and short sides together; instead, it will calculate the margin requirement for each side separately and use the higher of the two as the final requirement. This adjustment is expected to improve capital efficiency for users with hedged positions and opening orders. The rollout will be gradual, starting on September 22, 2026, and is expected to be fully effective by October 12, 2026.