NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND(NMZ)— Stock Profile, AI Score & Financials

NYSE · AI-powered stock analysis, 32-signal quality score, SEC EDGAR financials, and institutional holdings.

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) stock profile, AI quality score, and SEC EDGAR financial data. NMZ is not currently included in 13F Pro's AI-ranked quality universe — this company has no xbrl financial filings on file with sec edgar. common for adrs, recent ipos, otc-listed names, and foreign filers that haven't filed 20-f yet. Top institutional holders of NMZ by reported 13-F value include MORGAN STANLEY, GUGGENHEIM CAPITAL, WELLS FARGO & COMPANY, based on the most recent SEC filings. NMZ trades on the NYSE exchange and files with the SEC under CIK 1266585. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate NMZ daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND directly from SEC EDGAR.

Institutions holding NMZ

Institutional investors reporting a position in NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND on SEC Form 13F.
InstitutionSharesValueReported
MORGAN STANLEY3,168,046$33.5M2026-06-30
GUGGENHEIM CAPITAL2,376,749$25.1M2026-06-30
WELLS FARGO & COMPANY2,359,288$24.9M2026-06-30
SIT INVESTMENT ASSOCIATES2,336,943$24.7M2026-06-30
Hennion & Walsh Asset Management2,217,036$23.4M2026-06-30
RAYMOND JAMES FINANCIAL1,930,236$20.4M2026-06-30
UBS Group AG1,531,663$16.2M2026-06-30
BANK OF AMERICA1,112,841$11.8M2026-06-30
LPL Financial1,080,405$11.4M2026-06-30
VAN ECK ASSOCIATES1,056,439$11.2M2026-06-30
SEC EDGAR: CIK 1266585 →
NMZ

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

NMZ
NYSEMid CapOther

13F Pro Quality Score

Not in ranked universe

No SEC XBRL data

This company has no XBRL financial filings on file with SEC EDGAR. Common for ADRs, recent IPOs, OTC-listed names, and foreign filers that haven't filed 20-F yet.

Financial data, filings, and institutional holdings below are still tracked in full — only the proprietary quality composite is unavailable for this name.

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Top Institutional Holders

as of Q2 2026
$358.49M total
MORGAN STANLEY
$33.49M+18.8%
GUGGENHEIM CAPITAL LLC
$25.12M+16.3%
WELLS FARGO & COMPANY/MN
$24.94M+168.5%
SIT INVESTMENT ASSOCIATES INC
$24.70MNew
Hennion & Walsh Asset Management, Inc.
$23.43M+35.3%
RAYMOND JAMES FINANCIAL INC
$20.40M+72.3%
UBS Group AG
$16.19M-20.2%
BANK OF AMERICA CORP /DE/
$11.76M+185.9%
LPL Financial LLC
$11.42M+41.4%
VAN ECK ASSOCIATES CORP
$11.17M+56.7%
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