Most BitMEX contracts are highly leveraged. To keep these positions open, traders are required to hold a percentage of the value of the position on the exchange, known as the Maintenance Margin percentage. Minimum Maintenance Margin Requirements can be reviewed on the Risk Limits Page.
If this maintenance margin percentage is breached, the Liquidation Process occurs and your maintenance margin will be lost.
You can review your liquidation price per position via the Open Positions Tab and adjust by adding additional margin via the Leverage Slider or via the Risk Limits tab.
BitMEX uses Fair Price Marking for the purpose of avoiding liquidation due to illiquid markets or manipulation.
Risk Limits are also imposed that require higher margin levels for larger position sizes. This gives the BitMEX liquidation system more usable margin to effectively close large positions that would otherwise be difficult to safely close. If it is safe to do, larger positions are incrementally liquidated.
Furthermore, in the event of a liquidation, BitMEX will cancel any open orders on the current contract an attempt to free margin to avoid a liquidation. Note: Orders on other contracts will still remain open.
BitMEX employs a partial liquidation process involving automatic reduction of maintenance margin in an attempt to avoid a full liquidation of a trader’s position.
The liquidation system attempts to bring a user down to a lower Risk Limit, and thus lower margin requirements by:
If BitMEX is able to liquidate the position at better than the bankruptcy price, the additional funds will be added to the Insurance Fund.
If BitMEX is unable to liquidate the position at the bankruptcy price, BitMEX will spend the Insurance Funds on aggressing the position in the market in an attempt to close it. If this still does not close the liquidated order, this will then lead to an Auto-Deleveraging event.
Further information and examples of the Liquidation process are available.