The PIMCO Corporate & Income Opportunity Fund (PTY) operates as a closed-ended fixed income mutual fund. It is overseen by Allianz Global Investors Fund Management LLC, with Pacific Investment Management Company LLC acting as co-manager. This fund strategically allocates capital within global fixed income markets, emphasizing corporate debt obligations. Its portfolio targets a specific credit profile, encompassing bonds rated at the lowest investment grade (Baa or BBB) and the highest non-investment grade (Ba or BB). Key investments include intermediate-maturity bonds, diversified across numerous industries and sectors. Investment selection is driven by a meticulous combination of fundamental analysis and a top-down approach, underpinned by the firm's in-house research capabilities. Established on December 27, 2002, the fund is domiciled in the United States.