PIMCO Income Opportunity Fund (NYSE: PKO) is a diversified, closed-end management investment company that seeks high current income as its primary objective and capital appreciation as a secondary goal. The Fund invests across global fixed income markets in a range of income-producing securities, including corporate bonds and notes; asset-backed securities; non-agency mortgage-backed securities; government and sovereign debt; bank loans and related instruments; convertible securities; and short-term instruments, with an average portfolio duration of two to eight years. It employs a fundamental analysis and top-down investment approach, leveraging in-house research to select securities, and its portfolio includes notable holdings such as Sierra Hamilton Holder LLC notes, Voyager Aviation equity, Westmoreland Mining Holdings common stock, Clear Channel Outdoor Holdings, Inc., and Sequa Corp preferred stock.
Launched on September 12, 2007, and domiciled in the United States, the Fund is managed by Allianz Global Investors Fund Management LLC and co-managed by Pacific Investment Management Company LLC (PIMCO), with PIMCO's operations headquartered in Newport Beach, California. The Fund trades on the New York Stock Exchange and targets investors seeking yield through active fixed income strategies, operating without traditional open-end redemption features typical of closed-end funds.
In recent developments, the Fund participated in tender offers alongside affiliated PIMCO closed-end funds, including PIMCO Corporate & Income Opportunity Fund (NYSE: PTY), to repurchase up to 100% of their outstanding auction rate preferred shares (ARPS), which concluded in April 2024 to optimize capital structures. As part of PIMCO's broader fixed income strategy updates in 2025, the Fund has adjusted its positioning amid macroeconomic uncertainty by increasing interest rate exposure during market sell-offs, reducing economically sensitive holdings, and emphasizing higher-quality global fixed income opportunities while maintaining liquidity for tactical adjustments. These changes reflect ongoing portfolio management enhancements without major acquisitions, mergers, or new product launches specific to PKO in the last 1-2 years.