The AB Bond Fund, Inc.-AB Sustainable Thematic Credit Portfolio Class A (STHAX) is a mutual fund that focuses on investing in sustainable and socially responsible bonds. This fund aims to provide investors with a diversified portfolio of fixed-income securities that align with environmental, social, and governance (ESG) principles. STHAX is managed by AB, a leading global investment management firm, and offers investors the potential for long-term growth and income while promoting positive social and environmental impact.