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NMZ        0001266585    
Filing Date Form Type Description Document
2021-03-08 424B5 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2021-03-08 N-2ASR NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2021-01-14 N-CEN View Document
2021-01-07 N-CSR NMZ View Document
2020-12-29 NPORT-P View Document
2020-11-25 3 View Document
2020-10-13 40-17G 40-17G View Document
2020-10-06 8-K 8-K View Document
2020-09-29 NPORT-P View Document
2020-08-24 N-PX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-07-07 N-CSRS NMZ View Document
2020-06-29 NPORT-P View Document
2020-06-26 DEF 14A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-03-27 NPORT-P View Document
2020-03-25 497 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-03-06 3 View Document
2020-03-04 497 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-03-02 POS EX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-02-28 EFFECT View Document
2020-02-27 CORRESP View Document
2020-02-27 N-2/A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-02-20 CORRESP View Document
2020-01-17 N-2 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2020-01-14 N-CEN View Document
2020-01-08 N-CSR NMZ View Document
2019-12-27 NPORT-P View Document
2019-10-28 40-17G 40-17G View Document
2019-10-17 3 View Document
2019-09-27 NPORT-EX View Document
2019-08-19 N-PX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2019-08-16 3 View Document
2019-08-16 3 View Document
2019-07-08 N-CSRS NMZ View Document
2019-06-28 DEF 14A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2019-06-04 N-CEN/A View Document
2019-04-18 3 View Document
2019-04-18 497 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2019-04-11 486BPOS NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2019-04-01 N-Q NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2019-01-14 N-CEN View Document
2019-01-07 N-CSR NMZ View Document
2018-11-16 4 View Document
2018-09-28 N-Q NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2018-09-05 40-17G 40-17G View Document
2018-08-20 N-PX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2018-07-09 N-CSRS NMZ View Document
2018-07-05 CORRESP View Document
2018-06-28 DEF 14A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2018-03-29 N-Q NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2018-02-28 3 View Document
2018-02-28 3 View Document
2018-02-27 4 FORM 4 View Document
2018-02-27 SC 13D/A NONE View Document
2018-01-31 N-23C-2 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2018-01-08 N-CSR NMZ View Document
2017-12-29 NSAR-B View Document
2017-09-29 N-Q NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-09-22 497 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-09-18 EFFECT View Document
2017-09-14 CORRESP View Document
2017-09-14 N-2/A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-09-14 CORRESP View Document
2017-09-08 40-17G 40-17G View Document
2017-08-29 N-PX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-08-22 N-2 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-08-11 3 View Document
2017-08-11 3 View Document
2017-08-10 4 View Document
2017-08-10 3 View Document
2017-08-09 3 View Document
2017-07-10 3 View Document
2017-07-06 N-CSRS NMZ View Document
2017-06-29 NSAR-A View Document
2017-06-23 DEF 14A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-05-18 4 View Document
2017-05-18 3 View Document
2017-05-15 144 144 View Document
2017-03-31 N-Q NMZ View Document
2017-02-28 497J NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-02-10 486BPOS NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2017-01-09 N-CSR NMZ View Document
2016-12-30 NSAR-B View Document
2016-12-09 4 View Document
2016-10-11 497 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-10-11 3 View Document
2016-10-06 EFFECT View Document
2016-10-06 CORRESP View Document
2016-10-06 CORRESP View Document
2016-10-05 N-2/A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-10-04 CORRESP View Document
2016-09-30 40-APP/A EXEMPTION APPLICATION View Document
2016-09-29 N-Q NMZ View Document
2016-09-13 AW WD NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-09-13 AW NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-09-12 N-2/A NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-09-12 AW NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-08-31 40-17G 40-17G View Document
2016-08-30 25 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-08-29 N-PX NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND View Document
2016-08-23 CERTNYS AUTO-GENERATED PAPER DOCUMENT View Document

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