Default Fund
The default fund is a pool of assets contributed by all clearing members of a clearinghouse, designed to cover losses that exceed the collateral posted by a single defaulting member. It serves as a mutualized insurance pool that provides liquidity to the clearinghouse during extreme market events.
Every member contributes to this fund based on their trading volume and the riskiness of their positions. If a member defaults and their initial margin is insufficient to cover the losses, the clearinghouse draws from this fund to ensure that non-defaulting parties are paid.
This structure ensures that the market remains functional even when individual participants fail. It is a critical component of the risk management framework in derivatives clearing.