Insurance Fund Buffer

An insurance fund buffer is a reserve of assets held by a derivatives exchange or protocol to cover losses resulting from bankrupt positions that cannot be fully liquidated. When a user's account balance becomes negative due to rapid market moves, the insurance fund absorbs the shortfall to prevent the system from becoming insolvent.

This fund is typically accumulated through liquidation penalties and a portion of trading fees. It acts as a primary defense against systemic risk and socialized losses among traders.

The existence of a robust insurance fund is a key metric for evaluating the stability of a trading platform. It ensures that winners receive their profits even if other participants lose more than their initial margin.

It is a critical component of protocol physics.