Three sentences to explain isolated and cross margin:
In isolated margin mode, each position uses only the margin allocated to it. If liquidated, you can lose at most that amount of margin.
Under cross margin, a position with heavy losses can eat into the balance shared with other positions, weakening the safety buffer for all cross-margin positions.
When using cross margin, don’t put all your funds into your futures account—transfer only the amount you’re prepared to risk.
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