Liquidation Cascade Mechanisms

Liquidation cascade mechanisms describe the self-reinforcing cycle where automated liquidations of leveraged positions force asset prices lower, triggering further liquidations. In crypto lending protocols, smart contracts automatically sell collateral when it drops below a specific threshold to repay loans.

If the market is thin, these forced sales drive the price down further, which then triggers the liquidation of the next tier of leveraged positions. This feedback loop can cause rapid, extreme price drops that are disconnected from broader market fundamentals.

It is a primary source of systemic risk in decentralized finance, often exacerbated by the high leverage permitted in these protocols. Managing this requires careful parameter setting for collateral requirements and liquidation penalties.