# BlackRock Short Duration Muni Fund

BlackRock Short Duration Muni Fund is a registered fund series of BlackRock Municipal Bond Fund, Inc. (series S000002335). Net assets $503.1M as of 2026-03-31.

## Profile

- Series ID: S000002335
- Registrant: BlackRock Municipal Bond Fund, Inc.
- LEI: 5493000K3K76K51JDR40
- Net assets: $503.1M
- Total assets: $509.4M
- 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) | — | $32.5M | 645.88% |
| [New Jersey Economic Development Authority](https://search.stillhousedata.com/security/64577BE26) | — | $10.8M | 214.09% |
| [Southeast Energy Authority A Cooperative District](https://search.stillhousedata.com/security/84136GAK1) | — | $10.5M | 208.60% |
| [Black Belt Energy Gas District](https://search.stillhousedata.com/security/09182TCG0) | — | $9.0M | 178.71% |
| [Main Street Natural Gas Inc](https://search.stillhousedata.com/security/56035DFC1) | — | $7.4M | 146.84% |
| [California Community Choice Financing Authority](https://search.stillhousedata.com/security/13013JBM7) | — | $7.1M | 141.82% |
| [Pennsylvania Economic Development Financing Authority](https://search.stillhousedata.com/security/70870JGX0) | — | $7.1M | 141.03% |
| [Indiana Finance Authority](https://search.stillhousedata.com/security/45470YGF2) | — | $6.6M | 131.88% |
| [Colorado State Education Loan Program](https://search.stillhousedata.com/security/19672MDH8) | — | $6.4M | 126.39% |
| [New Jersey Economic Development Authority](https://search.stillhousedata.com/security/64577XEQ5) | — | $6.3M | 124.66% |
| [Michigan Strategic Fund](https://search.stillhousedata.com/security/594698QF2) | — | $6.2M | 123.82% |
| [North Texas Tollway Authority](https://search.stillhousedata.com/security/66285WM78) | — | $6.1M | 121.39% |
| [New Jersey Transportation Trust Fund Authority](https://search.stillhousedata.com/security/6461362E0) | — | $6.0M | 119.77% |
| [Southeast Energy Authority A Cooperative District](https://search.stillhousedata.com/security/84136FBT3) | — | $6.0M | 118.84% |
| [Southeast Energy Authority A Cooperative District](https://search.stillhousedata.com/security/84136HCT8) | — | $5.8M | 115.69% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $503.1M |
| 2025-12-31 | $487.4M |
| 2025-09-30 | $480.0M |
| 2025-06-30 | $462.8M |
| 2025-03-31 | $451.8M |
| 2024-12-31 | $447.2M |
| 2024-09-30 | $450.8M |
| 2024-06-30 | $469.7M |

## 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/S000002335.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

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.