OKX to support long positions in cross-margin mode

To further enhance the trading experience, OKX will support holding option buyer (long) positions in cross-margin mode for non-portfolio-margin (single-currency margin and multi-currency margin) accounts, effective at 18:00 (UTC +8) on 2026-07-28.
The specific updates are as follows:

Cross-margin support for option longs: In non-portfolio-margin accounts (single-currency / multi-currency margin), option buyer (long) positions can now be held in cross-margin mode. Once opened, the position belongs to the cross-margin account and is no longer defaulted to isolated margin.

Default trading mode change: When you place an option buy order (including via RFQ/Block Trade) without specifying a trading mode (tdMode), the option buy leg now defaults to cross margin. Explicitly specifying isolated will still open an isolated position. Portfolio margin behavior is unchanged, and spot (simple) mode is unchanged.

Coexisting long and short: Under cross margin, the long and short of the same options contract can be held simultaneously and are shown separately. Non-portfolio-margin accounts do not net long and short positions; only portfolio margin provides the net-offset effect.

Margin and risk treatment: A cross-margin option buyer (long) position is opened on a cash-flow basis (premium + fee) deducted from your available balance, and its IMR/MMR = 0. The option long is included in account equity and position display, but is not counted toward margin in use or the liquidation calculation, and will not be liquidated. Please note: exemption from liquidation does not mean exemption from auto-deleveraging (ADL) — ADL applies to options positions.
Multi-leg consolidation: Cross-margin option legs are consolidated and displayed together with your other cross-margin positions.

For more details, please refer to the account-mode and options rules pages in the Help Center.

OKX Team
2026-07-28