The PIMCO Preferred and Capital Securities Fund Class I-3 (PFNNX) is a mutual fund that primarily invests in preferred and capital securities, such as preferred stocks and hybrid securities. These types of investments typically offer higher yields than traditional bonds, making this fund attractive to investors seeking income. The fund is managed by PIMCO, a well-known investment management company, and is classified as Class I-3, indicating it is intended for institutional investors. This fund may be suitable for investors looking for a diversified portfolio with a focus on income generation.