The Bridge Builder Core Bond Fund (BBTBX) is a mutual fund that primarily invests in a diverse portfolio of high-quality bonds. This fund aims to provide investors with a stable and consistent income stream while also preserving capital. BBTBX may also invest in other fixed-income securities, such as mortgage-backed securities and corporate bonds, to further diversify its holdings. With a focus on core bonds, this fund offers a balanced approach to fixed-income investing and may be suitable for investors seeking a steady source of income with moderate risk.