Margin Trading Mechanics

Collateral

Margin trading fundamentally alters capital allocation, requiring an initial deposit—collateral—to establish a position exceeding available funds. This collateral mitigates counterparty risk for the broker, serving as a performance bond against potential losses stemming from adverse price movements. The maintenance of sufficient collateral, expressed as a margin ratio, is crucial; falling below this level triggers a margin call, demanding additional funds to restore the required ratio, or forced liquidation of the position. Effective collateral management directly impacts trading leverage and overall portfolio risk exposure.