Collateral Rehypothecation

Collateral rehypothecation is the practice where a financial intermediary or protocol uses the collateral pledged by a borrower to secure its own obligations or to provide liquidity elsewhere. In decentralized finance, this is often implemented through lending protocols that stake deposited assets into yield-bearing strategies while simultaneously allowing the depositor to borrow against them.

While this maximizes capital efficiency, it introduces significant systemic risk if the underlying assets lose value or if the protocol experiences a liquidity crunch. If the rehypothecated assets cannot be liquidated or withdrawn during a market stress event, it triggers a contagion effect.

This mechanism is a double-edged sword, providing necessary leverage for growth while creating hidden interdependencies. Effective risk management requires transparent tracking of how collateral is utilized across different protocol layers.