Margin
Margin is the collateral deposited by a trader with a broker or exchange to cover the credit risk posed by a leveraged position. In cryptocurrency and derivatives trading, it allows market participants to control a larger position size than their actual capital would otherwise permit.
Maintenance margin is the minimum amount of equity that must be held in the account to keep a position open. If the account value falls below this threshold, a margin call occurs, requiring the trader to deposit more funds or face automatic liquidation.
Margin essentially acts as a performance bond ensuring that losses can be covered. It is a critical component of market microstructure, enabling capital efficiency while simultaneously introducing the risk of rapid insolvency during high volatility.
Proper margin management is essential for mitigating systemic risk in leveraged trading environments.