ORNYX is a municipal bond mutual fund offered by Invesco. It aims to provide investors with tax-free income by investing in a diversified portfolio of municipal securities. The fund primarily focuses on high-yield municipal bonds, with a focus on opportunities in the Rochester, New York area. As a Class Y fund, it is designed for institutional investors and has a lower expense ratio compared to other share classes. ORNYX may be a suitable option for investors seeking tax-free income and are willing to take on some risk in pursuit of higher returns.