CCP Risk Mutualization
Risk mutualization is the mechanism where market participants share the burden of losses that exceed the collateral of a defaulting member. Within a central counterparty, members contribute to a shared guaranty fund.
If a member defaults and their margin is insufficient to cover the losses, the fund is tapped to satisfy the obligations. This system incentivizes members to perform due diligence on one another and support robust risk management practices.
It effectively spreads the tail risk of the market across all participants. While it protects the system, it also introduces the risk of contagion if a massive default exhausts the fund.
Modern protocols are exploring decentralized versions of this model using automated vaults.