WMBRX — Municipal Bond Fund
Data updated: 2026-09-08
WMBRX — Municipal Bond Fund. Long Municipal - National Bond · $9.78B AUM · 0.37% expense ratio. Holdings, fees, performance and SEC filings.
WMBRX Fund Overview
WMBRX — Municipal Bond Fund is a US mutual fund managed by Allspring Funds Trust, 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: Allspring Funds Trust
- Category: Long Municipal - National Bond
- Assets under management: $9.78B
- 1-year return: 8.9%
- Ticker: WMBRX
- SEC CIK: 0001081400
- SEC series ID: S000007397
- Share class ID: C000205244
WMBRX Holdings
Top 10 holdings of Municipal Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| County of Clark NV | 0.52% |
| Regional Transportation District Sales Tax Revenue | 0.52% |
| Port of Portland OR Airport Revenue | 0.52% |
| Southeast Energy Authority A Cooperative District | 0.50% |
| Northwest Independent School District | 0.50% |
| Texas Transportation Finance Corp | 0.45% |
| Texas Water Development Board | 0.44% |
| Metropolitan Pier & Exposition Authority | 0.44% |
| Fairfax County Industrial Development Authority | 0.43% |
| Black Belt Energy Gas District | 0.41% |
WMBRX Portfolio Allocation
Asset-class allocation of Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 100.3% |
| Cash & Equivalents | 0.3% |
WMBRX Performance
Total returns for WMBRX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 4.6% |
| 1 year | 8.9% |
| 3 years (annualised) | 4.5% |
| 5 years (annualised) | 3.9% |
WMBRX Risk Information
Risk metrics for WMBRX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.2%
WMBRX Costs and Fees
WMBRX costs about $37 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.37%
- Gross expense ratio: 0.37%
- Portfolio turnover: 16%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
WMBRX Cashflows
Over the 12 months to 2026-06, Municipal Bond Fund had net inflows of $1.64B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $46.31M |
| 2026-05 | $805.48M |
| 2026-04 | $21.90M |
| 2026-03 | $55.02M |
| 2026-02 | $198.73M |
| 2026-01 | $245.54M |
WMBRX Debt Constituents
Largest debt holdings of Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| County of Clark NV | 0.52% |
| Regional Transportation District Sales Tax Revenue | 0.52% |
| Port of Portland OR Airport Revenue | 0.52% |
| Southeast Energy Authority A Cooperative District | 0.50% |
| Northwest Independent School District | 0.50% |
| Texas Transportation Finance Corp | 0.45% |
| Texas Water Development Board | 0.44% |
| Metropolitan Pier & Exposition Authority | 0.44% |
| Fairfax County Industrial Development Authority | 0.43% |
| Black Belt Energy Gas District | 0.41% |
WMBRX Prospectus and SEC Filings
Official Municipal Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-10-23
- Prospectus (485BPOS) — filed 2024-10-24
- Prospectus supplement (497) — filed 2026-07-01
- Portfolio holdings (N-PORT) — filed 2026-08-26
- Portfolio holdings (N-PORT) — filed 2026-05-27
- Portfolio holdings (N-PORT) — filed 2026-02-25
- Annual census (N-CEN) — filed 2026-09-08
- Annual census (N-CEN) — filed 2025-08-29
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.