Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 18

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 18
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 risks in the portfolio. The Fund may purchase and sell securities on a when-issued, delayed delivery or forward commitment basis and may engage in short sales. The Fund may use derivative instruments for other purposes, including to seek to increase liquidity, provide efficient portfolio management, broaden investment opportunities (including taking short or negative positions), implement a tax or cash management strategy, gain exposure to a particular security or segment of the market, modify the effective duration of the Fund’s portfolio investments and/or enhance total return. The Fund will not normally invest more than 20% of its total assets in debt instruments, other than mortgage-related and other asset-backed securities, that are, at the time of purchase, rated CCC or lower by S&P and Fitch and Caa1 or lower by Moody’s, or that are unrated but determined by PIMCO to be of comparable quality. The Fund may invest without limit in mortgage-related and other asset-backed securities regardless of rating—i.e., of any credit quality. The Fund may invest in securities that have not been registered for public sale in the U.S. or relevant non-U.S. jurisdictions, including without limit securities eligible for purchase and sale pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”), or relevant provisions of applicable non-U.S. law, and other securities issued in private placements. The Fund may also invest in securities of other open- and closed-end investment companies, including, without limit, exchange-traded funds (“ETFs”), and may invest in foreign ETFs. The Fund may invest in real estate investment trusts. The Fund may invest in securities of companies with any market capitalization, including small and medium capitalizations. As of the date of this prospectus, the Fund may invest up to 20% of its total assets in illiquid investments (i.e., investments that the Fund reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without the sale or disposition significantly changing the market value of the investment). Effective October 27, 2023, the Fund may invest without limitation in illiquid investments. ii Leverage. The Fund currently utilizes leverage principally through its outstanding auction rate preferred shares (“ARPS” and, together with any other preferred shares the Fund may have outstanding, “Preferred Shares”) and reverse repurchase agreements and may also obtain additional leverage through the use of dollar rolls/buy backs or borrowings, such as through bank loans or commercial paper and/or other credit facilities.