PIMCO Dynamic Income Fund is a United States-based closed-end management investment company. The fund's investment objective is to seek current income. Its secondary objective is to seek capital appreciation. The fund invests world-wide in a portfolio of debt obligations and other income-producing securities with varying maturities and related derivative instruments. Its investments include mortgage-backed securities, investment grade, and high-yield corporates, corporate and sovereign bonds, other income-producing securities, and related derivative instruments.