About iShares iBonds Dec 2021 Term Muni Bond ETF

The investment seeks to track the investment results of the S&P AMT-Free Municipal Series Dec 2021 IndexTM, which measures the performance of investment-grade, non-callable U.S. municipal bonds maturing in 2021. The fund generally will invest at least 90% of its assets in the component securities of the underlying index, and may invest up to 10% of its assets in certain futures, options and swap...