Preconditions
You already hold an open position on the exchange's futures trading page that is currently in a floating profit state.
OKX Exchange
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New user benefit: 20% off trading fees upon registration!！The "Positions" panel on the platform displays the "Estimated Liquidation Price", which is marked as "Estimated Blow-up Price" on some platforms' position pages.
Core Change Rule of Liquidation Price After Partial Close
The liquidation price will change in cross margin mode, while it remains basically stable in isolated margin mode. The liquidation price is not altered by the partial close action itself, but recalculated based on the margin occupied by the remaining position and profit/loss. The calculation logic for the two position modes is completely different.
Step 1: Confirm Your Position Mode
Check the "Isolated Margin" or "Cross Margin" label in the position panel for your current mode. Mainstream futures trading platforms clearly mark "Isolated Margin" or "Cross Margin" in the position information bar.
Liquidation Price Performance in Isolated Margin Mode
The margin of an isolated position is independently segregated, and has no relation to other positions and account balance. After partial position close, the liquidation price remains basically unchanged, since after deducting the corresponding margin of the closed part, the unrealized P&L of the remaining position is recalculated at the same entry price, keeping the liquidation price stable.
Liquidation Price Performance in Cross Margin Mode
In cross margin mode, the position margin is shared with all other cross margin positions in the account, which is the key scenario to pay attention to. After partial position close, the liquidation price will change significantly, because cross margin balance = wallet balance + unrealized P&L of all positions. Partial close will change the total position value and floating P&L, leading to a recalculated liquidation price.
Completion criteria: Clearly confirm which mode your position is in. If you are not sure, find the "Isolated/Cross Margin" label in the position panel.
Step 2: Understand the Logic of Liquidation Price Change After Partial Close in Cross Margin Mode
Only by clarifying the cross margin calculation logic can you judge the direction the liquidation price will move. The core formula for cross margin is: Margin Balance = Wallet Balance + Unrealized P&L.
Partial close in floating profit state: After closing, part of the profit is locked as realized profit and added to the wallet balance. The unrealized P&L of the remaining position decreases as the position size shrinks. The total account equity barely changes, but the maintenance margin requirement reduces along with the smaller position size. As a result, the liquidation price usually moves further away from the current market price, improving position safety.
Partial close in floating loss state: Closing the position will realize part of the loss and reduce the wallet balance, while also reducing the unrealized loss of the remaining position. The change direction of the liquidation price depends on the ratio between the two, which may make the position safer or riskier.
Completion criteria: You can understand that the root cause of liquidation price change is that the ratio of "account equity" to "remaining position value" is recalculated.
Critical Risk Warning: In cross margin mode, if you have unrealized losses from other positions, the margin released by partially closing a profitable position will be reallocated to the whole account's risk calculation by the system, and will not directly lower the liquidation price of the remaining position. Many traders mistakenly believe that partial close makes positions safer, but ignore the cross margin sharing mechanism: as long as there are losing positions in the account, the overall risk continues to accumulate.
Step 3: Use Platform Tools to Pre-calculate the Estimated Liquidation Price After Partial Close
Simulate the new liquidation price after partial close before placing the order. Find the "Calculator" or "Simulation" tool on the futures page of mainstream platforms, enter your entry price, position size, leverage, and the number of contracts to close, the system will automatically display the estimated liquidation price.
If the simulated liquidation price moves further away from the market price, it means partial close effectively reduces risk and can be executed. If the simulated liquidation price moves closer to the market price instead, do not execute the partial close. This situation usually occurs when you use cross margin and have other losing positions in the account, the close action will reduce total account equity and raise overall risk.
Completion criteria: Before executing partial close, you have viewed the new estimated liquidation price in the platform tool, and confirmed the price is within the acceptable risk range.
Common Failure Reasons
After partial close, many traders see the realized profit number increase and mistakenly think the overall risk is reduced. But in cross margin mode, partial close only reduces the fluctuation risk of unrealized P&L, while locking in realized profit. The two have different weights in the liquidation price formula. Liquidation price depends on the ratio of "total account equity / total position size", not how much floating profit you have. Blindly executing partial close without checking the new liquidation price may lead to unexpected forced liquidation even at seemingly safe positions.
Verification Method After Operation Completion
Right after partial close is completed, immediately check the estimated liquidation price displayed in the position panel, compare this price with the current market price, and confirm the gap is larger than your stop loss distance, for example, the liquidation price is at least 5% further away than your stop loss price.
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Follow-up Operation Notes
After completing partial close, adjust the stop loss order of the remaining position to match the new liquidation price. For long positions, the stop loss price must be lower than the liquidation price. Wait for one 4-hour K-line to close, observe if the new liquidation price has minor adjustments due to funding fee settlement. Funding fee is settled every 8 hours, which may slightly affect the wallet balance and liquidation price. Verify through the "Current Orders" or "Positions" panel on the futures page, to confirm the liquidation price and stop loss price maintain a safe distance.
