The AB Bond Fund, Inc. - AB Tax-Aware Fixed Income Opportunities Portfolio - C (ATCCX) is a mutual fund that focuses on fixed income securities and aims to provide tax-efficient returns for investors. It is managed by AB, a global investment management firm, and primarily invests in a diversified portfolio of bonds and other debt instruments. The fund's C share class is designed for individual investors and has a lower expense ratio compared to other share classes. Overall, the ATCCX mutual fund offers a tax-aware approach to fixed income investing, making it a suitable option for those seeking income and tax efficiency in their investment portfolio.