BlackRock National Municipal Fund
Data updated: 2026-05-28
C000006118 — BlackRock National Municipal Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $5.67B AUM · 0.72% expense ratio · 3.3% 1-yr return. From SEC regulatory filings.
C000006118 Fund Overview
BlackRock National Municipal Fund is a US mutual fund managed by Blackrock Municipal Bond Fund, Inc., categorised as Long Municipal - National Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Blackrock Municipal Bond Fund, Inc.
- Category: Long Municipal - National Bond
- Assets under management: $5.67B
- 1-year return: 3.3%
- SEC CIK: 0000225635
- SEC series ID: S000002334
- Share class ID: C000006118
C000006118 Holdings
Top 10 holdings of BlackRock National Municipal Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| BlackRock Liquidity Funds | 4.92% |
| San Francisco City & County Public Utilities Commission Wastewater Revenue | 1.69% |
| Main Street Natural Gas Inc | 1.62% |
| Energy Southeast A Cooperative District | 1.62% |
| Patriots Energy Group Financing Agency | 1.58% |
| Southeast Energy Authority A Cooperative District | 1.36% |
| Black Belt Energy Gas District | 1.21% |
| Tennessee Energy Acquisition Corp | 1.03% |
| Black Belt Energy Gas District | 0.99% |
| New Jersey Turnpike Authority | 0.95% |
C000006118 Portfolio Allocation
Asset-class allocation of BlackRock National Municipal Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 95.6% |
| Cash & Equivalents | 4.9% |
| Equity | 0.9% |
C000006118 Performance
Total returns for C000006118 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.0% |
| 1 year | 3.3% |
| 3 years (annualised) | 2.7% |
| 5 years (annualised) | 0.3% |
C000006118 Risk Information
Risk metrics for C000006118, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.6%
C000006118 Costs and Fees
C000006118 costs about $72 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.72%
- Gross expense ratio: 0.77%
- Portfolio turnover: 46%
- Brokerage commissions: 0.05 bps of average net assets (SEC N-CEN)
C000006118 Cashflows
Over the 12 months to 2026-03, BlackRock National Municipal Fund had net outflows of $1.02B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$50.74M |
| 2026-02 | $2.48M |
| 2026-01 | −$13.74M |
| 2025-12 | −$89.22M |
| 2025-11 | −$34.08M |
| 2025-10 | −$26.78M |
C000006118 Debt Constituents
Largest debt holdings of BlackRock National Municipal Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| San Francisco City & County Public Utilities Commission Wastewater Revenue | 1.69% |
| Main Street Natural Gas Inc | 1.62% |
| Energy Southeast A Cooperative District | 1.62% |
| Patriots Energy Group Financing Agency | 1.58% |
| Southeast Energy Authority A Cooperative District | 1.36% |
| Black Belt Energy Gas District | 1.21% |
| Tennessee Energy Acquisition Corp | 1.03% |
| Black Belt Energy Gas District | 0.99% |
| New Jersey Turnpike Authority | 0.95% |
| Southeast Energy Authority A Cooperative District | 0.94% |
C000006118 Prospectus and SEC Filings
Official BlackRock National Municipal Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Municipal - National Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.