THMMX — Thornburg Municipal Managed Account Fund
Data updated: 2026-05-26
THMMX — Thornburg Municipal Managed Account Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $12.27M AUM · 0.00% expense ratio · 4.5% 1-yr return. From SEC regulatory filings.
THMMX Fund Overview
THMMX — Thornburg Municipal Managed Account Fund is a US mutual fund managed by Thornburg Investment 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: Thornburg Investment Trust
- Category: Long Municipal - National Bond
- Assets under management: $12.27M
- 1-year return: 4.5%
- Ticker: THMMX
- SEC CIK: 0000816153
- SEC series ID: S000079976
- Share class ID: C000241473
THMMX Holdings
Top 10 holdings of Thornburg Municipal Managed Account Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Energy Southeast A Cooperative District | 2.59% |
| West Virginia Economic Development Authority | 2.37% |
| City of Detroit MI | 2.25% |
| Kentucky Public Energy Authority | 2.17% |
| Southeast Alabama Gas Supply District/The | 2.17% |
| Black Belt Energy Gas District | 2.17% |
| California Community Choice Financing Authority | 2.15% |
| Indiana Finance Authority | 2.09% |
| City of Farmington NM | 2.07% |
| County of Washoe NV | 2.06% |
THMMX Portfolio Allocation
Asset-class allocation of Thornburg Municipal Managed Account Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.7% |
| Equity | 0.5% |
THMMX Performance
Total returns for THMMX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.1% |
| 1 year | 4.5% |
| 3 years (annualised) | 5.0% |
THMMX Risk Information
Risk metrics for THMMX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.8%
THMMX Costs and Fees
THMMX costs about $0 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.00%
- Gross expense ratio: 1.87%
- Portfolio turnover: 51%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
THMMX Cashflows
Over the 12 months to 2026-03, Thornburg Municipal Managed Account Fund had net inflows of $656.95K, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $49.08K |
| 2026-02 | $48.91K |
| 2026-01 | $48.86K |
| 2025-12 | $61.12K |
| 2025-11 | $58.25K |
| 2025-10 | $132.99K |
THMMX Debt Constituents
Largest debt holdings of Thornburg Municipal Managed Account Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Energy Southeast A Cooperative District | 2.59% |
| West Virginia Economic Development Authority | 2.37% |
| City of Detroit MI | 2.25% |
| Kentucky Public Energy Authority | 2.17% |
| Southeast Alabama Gas Supply District/The | 2.17% |
| Black Belt Energy Gas District | 2.17% |
| California Community Choice Financing Authority | 2.15% |
| Indiana Finance Authority | 2.09% |
| City of Farmington NM | 2.07% |
| County of Washoe NV | 2.06% |
THMMX Prospectus and SEC Filings
Official Thornburg Municipal Managed Account 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.