The State Street SPDR Nuveen ICE Municipal Bond ETF aims to achieve investment results that closely reflect the price and income performance of the ICE 1+ Year AMT-Free Broad Municipal Index, before any associated fees and expenses are considered. This underlying Index comprises a diverse array of municipal debt instruments, such as general obligation bonds from state and local governments, revenue bonds, pre-refunded securities, insured bonds, and municipal lease obligations. Its holdings are weighted by market capitalization, and the Index is regularly updated through monthly rebalancing and reconstitution.