American Century High Yield Municipal Fund Investor Class ABHYX

Morningstar generates quantitatively driven content that covers the Environmental, Social, and Governance (ESG) characteristics for managed investments that have both a Portfolio ESG Risk Rating and a Portfolio Carbon Risk Score, called the Sustainability Strategy Summary. This share class’ Sustainability Summary content was not generated because of insufficient data. To generate individualized content, the Sustainability Summary requires sufficient data to create its framework of “mental models” designed to mimic content written by analysts. The Sustainability Strategy Summary uses an algorithm designed to predict the ESG analysis that analysts would produce on the investment product if they covered it.

Morningstar analysts award an ESG Commitment Level Asset Manager ratings to investments that also receive Morningstar Medalist Ratings. Not all investments currently have Asset Manager rating. Morningstar is expanding its coverage, prioritizing investments that are most relevant to investors.