# BlackRock National Municipal Fund

BlackRock National Municipal Fund is a registered fund series of BlackRock Municipal Bond Fund, Inc. (series S000002334). Net assets $5.7B as of 2026-03-31.

## Profile

- Series ID: S000002334
- Registrant: BlackRock Municipal Bond Fund, Inc.
- LEI: 57P6LYFXTWNU9L7GM070
- Net assets: $5.7B
- Total assets: $5.9B
- As of: 2026-03-31

## Advisers

- [BlackRock Advisors, LLC (Advisor)](https://search.stillhousedata.com/firm/106614)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [BlackRock Liquidity Funds](https://search.stillhousedata.com/security/09248U841) | — | $278.9M | 491.97% |
| [San Francisco City & County Public Utilities Commission Wastewater Revenue](https://search.stillhousedata.com/security/79768HGH5) | — | $95.6M | 168.58% |
| [Main Street Natural Gas Inc](https://search.stillhousedata.com/security/56035DFK3) | — | $92.0M | 162.29% |
| [Energy Southeast A Cooperative District](https://search.stillhousedata.com/security/292723AK9) | — | $91.9M | 162.21% |
| [Patriots Energy Group Financing Agency](https://search.stillhousedata.com/security/70342PAR5) | — | $89.7M | 158.19% |
| [Southeast Energy Authority A Cooperative District](https://search.stillhousedata.com/security/84136FAH0) | — | $77.3M | 136.44% |
| [Black Belt Energy Gas District](https://search.stillhousedata.com/security/09182TFT9) | — | $68.8M | 121.33% |
| [Tennessee Energy Acquisition Corp](https://search.stillhousedata.com/security/880443JM9) | — | $58.6M | 103.38% |
| [Black Belt Energy Gas District](https://search.stillhousedata.com/security/09182TDB0) | — | $56.1M | 98.97% |
| [New Jersey Turnpike Authority](https://search.stillhousedata.com/security/646140GB3) | — | $53.7M | 94.69% |
| [Southeast Energy Authority A Cooperative District](https://search.stillhousedata.com/security/84136HCT8) | — | $53.1M | 93.60% |
| [Commonwealth of Massachusetts](https://search.stillhousedata.com/security/57582RY34) | — | $52.6M | 92.88% |
| [Tobacco Settlement Financing Corp](https://search.stillhousedata.com/security/888808HR6) | — | $52.6M | 92.71% |
| [Patriots Energy Group Financing Agency](https://search.stillhousedata.com/security/70342PAN4) | — | $52.3M | 92.19% |
| [Washington Metropolitan Area Transit Authority Dedicated Revenue](https://search.stillhousedata.com/security/93878YAV1) | — | $51.8M | 91.32% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $5.7B |
| 2025-12-31 | $5.8B |
| 2025-09-30 | $5.9B |
| 2025-06-30 | $6.0B |
| 2025-03-31 | $6.7B |
| 2024-12-31 | $7.2B |
| 2024-09-30 | $7.4B |
| 2024-06-30 | $7.4B |

## More

- [Registrant: BlackRock Municipal Bond Fund, Inc.](https://search.stillhousedata.com/registrant/225635)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000002334.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.