Settlement Index

A settlement index is a standardized benchmark price used to determine the final value of a derivative contract upon expiry. It is designed to be resistant to volatility and manipulation, often aggregating prices from multiple major exchanges or liquidity providers.

By using an index rather than a single exchange spot price, protocols mitigate the risk of flash crashes or localized price spikes affecting the entire market. This mechanism ensures fairness for both buyers and sellers by creating a reliable reference point for financial settlement.

It is frequently employed in crypto-derivatives where market fragmentation can lead to price discrepancies. The index calculation methodology is typically transparent and documented in the protocol specifications.

It acts as the ultimate truth for the derivative contract at the moment of maturity.