# Nuveen Municipal High Income Opportunity Fund

Nuveen Municipal High Income Opportunity Fund (CIK 1266585) is an SEC-registered fund company and $2.2B in net assets as of 2026-04-30.

## Registrant

- CIK: 1266585
- File number: 811-21449
- LEI: BN7VUB6JBYC7TTWZRZ58
- Address: 333 W. Wacker Dr, Chicago, US-IL, 60606
- Phone: 312-917-7700
- Net assets: $2.2B
- Total assets: $3.7B
- Latest report: 2026-04-30

## Fund series (1)

| Series | Net assets |
| --- | --- |
| Nuveen Municipal High Income Opportunity Fund | $2.2B |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1](https://search.stillhousedata.com/security/74529JQH1) | $41.6M |
| [New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C](https://search.stillhousedata.com/security/646136EV9) | $30.0M |
| [New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C](https://search.stillhousedata.com/security/646136EW7) | $29.6M |
| [New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C](https://search.stillhousedata.com/security/646136EY3) | $28.6M |
| [New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Capital Appreciation Series 2010A](https://search.stillhousedata.com/security/646136XH9) | $27.1M |
| [State Public School Building Authority, Pennsylvania, Lease Revenue Bonds, Philadelphia School District, Series 2003](https://search.stillhousedata.com/security/857322PX3) | $22.1M |
| [Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Refunding Series 2022](https://search.stillhousedata.com/security/46246SAU9) | $20.3M |
| [Kentucky Economic Development Finance Authority, Hospital Revenue Bonds, Owensboro Health, Refunding Series 2017A](https://search.stillhousedata.com/security/49126KKD2) | $17.2M |
| [New York Transportation Development Corporation, New York, Special Facilities Bonds, LaGuardia Airport Terminal B Redevelopment Project, Series 2016A](https://search.stillhousedata.com/security/650116AV8) | $17.0M |
| [Nuveen High Yield Municipal Bond ETF](https://search.stillhousedata.com/security/67092P722) | $16.8M |
| [CSCDA Community Improvement Authority, California, Essential Housing Revenue Bonds, Altana Glendale, Series 2021A-2](https://search.stillhousedata.com/security/126292AM3) | $16.6M |
| [Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Taxable Restructured Cofina Project Series 2019A-2](https://search.stillhousedata.com/security/74529JRL1) | $16.6M |
| [Public Finance Authority of Wisconsin, Limited Obligation PILOT Revenue Bonds, American Dream @ Meadowlands Project, Series 2017](https://search.stillhousedata.com/security/74446HAD1) | $16.3M |
| [South Miami Health Facilities Authority, Florida, Hospital Revenue Bonds, Baptist Health Systems of South Florida Obligated Group, Refunding Series 20](https://search.stillhousedata.com/security/838810EE5) | $15.1M |
| [Tulsa Municipal Airport Trust, Oklahoma, Revenue Bonds, American Airlines Inc., Refunding Series 2000B](https://search.stillhousedata.com/security/899661EH1) | $15.0M |

## More

- [CIK 1266585 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1266585&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/1266585.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.