iShares iBonds Dec 2023 Term Muni Bond 

The fund will invest at least 80% of its assets in the component securities of the index, and it will invest at least 90% of its assets in fixed income securities of the types included in the index. The index includes municipal bonds primarily from issuers that are U.S. state, federal district, or local government or agency such that the interest on the bonds is exempt from U.S. federal income taxes and the federal alternative minimum tax.