Form 424B3 - Prospectus [Rule 424(b)(3)]
14 Juli 2023 - 9:45PM
Edgar (US Regulatory)
Filed Pursuant to Rule 424(b)(3)
File No. 333-253965
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
(NYSE: NMZ)
(THE FUND)
SUPPLEMENT DATED JULY 14, 2023
TO THE FUNDS PROSPECTUS AND
STATEMENT OF ADDITIONAL INFORMATION (SAI)
DATED MARCH 5, 2021, EACH AS SUPPLEMENTED, AND
EACH PROSPECTUS SUPPLEMENT
The Board of Directors of the Fund has approved a change to
the Funds maturity policy.
Effective immediately, (1) the first sentence of the tenth paragraph in the section of the
Funds Prospectus Summary, and each Prospectus Supplement, entitled Investment Objectives and Policies; (2) the second sentence under the eighth paragraph in the section of the Funds Prospectus entitled Municipal
Securities; and (3) the first and third sentences of the thirteenth paragraph under Investment Policies in the SAI are deleted in their entirety and replaced with the following:
Under normal market conditions, the Fund will generally maintain an investment portfolio with an overall
weighted average maturity of greater than 10 years.
PLEASE KEEP THIS WITH YOUR
FUNDS PROSPECTUS AND SAI FOR FUTURE REFERENCE
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