TSRSX — Thornburg Strategic Income Fund
Data updated: 2026-05-26
TSRSX — Thornburg Strategic Income Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Total / Aggregate Bond · $10.16B AUM · 0.53% expense ratio · 5.2% 1-yr return. From SEC regulatory filings.
TSRSX Fund Overview
TSRSX — Thornburg Strategic Income Fund is a US mutual fund managed by Thornburg Investment Trust, categorised as Long Total / Aggregate 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 Total / Aggregate Bond
- Assets under management: $10.16B
- 1-year return: 5.2%
- Ticker: TSRSX
- SEC CIK: 0000816153
- SEC series ID: S000020097
- Share class ID: C000177481
TSRSX Holdings
Top 10 holdings of Thornburg Strategic Income Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Thornburg Capital Management Fund | 2.05% |
| United States Treasury | 1.97% |
| United States Treasury | 1.85% |
| Government National Mortgage Association | 1.38% |
| United States Treasury | 1.31% |
| United States Treasury | 1.14% |
| United States Treasury | 1.01% |
| Freddie Mac | 0.88% |
| Government National Mortgage Association | 0.78% |
| United States Treasury | 0.62% |
TSRSX Portfolio Allocation
Asset-class allocation of Thornburg Strategic Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 57.9% |
| Securitized | 37.2% |
| Equity | 2.6% |
| Loans | 2.1% |
| Cash & Equivalents | 0.5% |
TSRSX Performance
Total returns for TSRSX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.1% |
| 1 year | 5.2% |
| 3 years (annualised) | 5.8% |
| 5 years (annualised) | 3.2% |
TSRSX Risk Information
Risk metrics for TSRSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.3%
TSRSX Costs and Fees
TSRSX costs about $53 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.53%
- Gross expense ratio: 0.69%
- Portfolio turnover: 30%
- Brokerage commissions: 0.01 bps of average net assets (SEC N-CEN)
TSRSX Cashflows
Over the 12 months to 2026-03, Thornburg Strategic Income Fund had net inflows of $595.97M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$106.40M |
| 2026-02 | $48.52M |
| 2026-01 | −$24.09M |
| 2025-12 | $85.53M |
| 2025-11 | $42.10M |
| 2025-10 | $93.81M |
TSRSX Debt Constituents
Largest debt holdings of Thornburg Strategic Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 1.97% |
| United States Treasury | 1.85% |
| United States Treasury | 1.31% |
| United States Treasury | 1.14% |
| United States Treasury | 1.01% |
| United States Treasury | 0.62% |
| United States Treasury | 0.39% |
| Salesforce, Inc. | 0.37% |
| Emera, Inc. | 0.34% |
| Cobank Acb | 0.34% |
TSRSX Prospectus and SEC Filings
Official Thornburg Strategic Income Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Total / Aggregate 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.