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Hotstuff enables users to trade either in a cross-margin mode or isolated margin mode. All Positions in cross-margin share the same collateral whereas positions in isolated margin mode have their collateral constrained to their respective position only. Liquidation of an isolated position does not affect a user’s other isolated positions or their cross margin positions. Some perp markets operate in isolated-only mode where only isolated margin is allowed. Further isolated-only markets do not allow users to remove margin from their positions.

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Initial Margin

Initial margin is the margin required to open a position and cannot be withdrawn for cross margin positions. Isolated margin positions support adding and removing margin after the position is opened.
The leverage of position is an integer and can be set by a user to any value between 1 and the max leverage. Max leverage of a perp instrument can vary according to the instrument as well a user’s margin tier.

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Maintenance Margin

Maintenance Margin is the total margin required to keep position(s) open.