Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 159

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 159
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 prevent the Fund from purchasing a security expected to appreciate in value. Additionally, actual or potential conflicts of interest, legislative, regulatory, or tax restrictions, policies or developments may affect the investment techniques available to PIMCO and each individual portfolio manager in connection with managing the Fund and may also adversely affect the ability of the Fund to achieve its investment objectives. There also can be no assurance that all of the personnel of PIMCO will continue to be associated with PIMCO for any length of time. The loss of services of one or more key employees of PIMCO could have an adverse impact on the Fund’s ability to realize its investment objectives. In addition, the Fund may rely on various third-party sources to calculate its net asset value. As a result, the Fund is subject to certain operational risks associated with reliance on service providers and service providers’ data sources. In particular, errors or systems failures and other technological issues may adversely impact the Fund’s calculations of its net asset value, and such net asset value calculation issues may result in inaccurately calculated net asset value, delays in net asset value calculation and/or the inability to calculate net asset value over extended periods. The Fund may be unable to recover any losses associated with such failures. September 28, 2023 | Base Prospectus 59 PIMCO Corporate & Income Opportunity Fund Issuer Risk The value of a security may decline for a number of reasons that directly relate to the issuer, such as management performance, major litigation, investigations or other controversies, changes in financial condition or credit rating, changes in government regulations affecting the issuer or its competitive environment and strategic initiatives such as mergers, acquisitions or dispositions and the market response to any such initiatives, financial leverage or reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets. A change in the financial condition of a single issuer may affect securities markets as a whole. These risks can apply to the Common Shares issued by the Fund and to the issuers of securities and other instruments in which the Fund invests. Interest Rate Risk Interest rate risk is the risk that fixed income securities and other instruments in the Fund’s portfolio will fluctuate in value because of a change in interest rates. As nominal interest rates rise, the value of certain fixed income securities held by the Fund is likely to decrease. For example, a nominal interest rate can be described as the sum of a real interest rate and an expected inflation rate. Interest rate changes can be sudden and unpredictable, and