Margin

For Pro mode (orderbook perpetual contracts)

Margin trading on Aster Pro lets you amplify your positions by borrowing funds, allowing you to trade with more size than your actual balance.

Leverage

Leverage lets you open a larger position with a smaller amount of collateral (margin). For example, with 10× leverage, a $100 margin allows you to open a $1,000 position.

You can choose your desired leverage using the slider or input field in the trading panel. Each asset has its own maximum limit.

The initial margin required to open a position is based on your leverage. It’s calculated using the formula: (Position size × Mark price) / Leverage

Margin modes

Aster Pro supports two margin modes:

• Cross margin (default) Your margin is shared across all open positions. Profits from one trade can offset losses in another. This reduces liquidation risk but puts your entire margin balance at stake.

• Isolated margin Margin is applied to a single position. If the trade moves against you, only the margin tied to that position is at risk. Other positions remain unaffected.

You can select the margin mode directly in the trading interface (Cross/Isolated) before opening a position. You cannot change the margin mode after you’ve submitted a position or opened an order.

Monitoring margin

You can track your used margin, liquidation price, and available balance in real time within the position panel. This helps you manage risk and avoid liquidation.

Maintenance margin is the minimum amount required to keep a position open. If your margin falls below this level, your position may be liquidated. It's based on the total size of your position, not the leverage you select. As position size increases, higher portions fall into higher maintenance margin tiers, each with progressively higher rates.

Liquidation

If your margin falls below the maintenance requirement, your position may be liquidated to prevent further losses. Keeping an eye on your margin ratio and funding rates is key to staying safe.