Thornburg Investment Income Builder Fund
THORNBURG INVESTMENT TRUST · Series S000011851 · 7 share classes
data updated 2026-08-10
Fund profile
As filed in the prospectus · 2026 Q1
The Funds primary investment goal is to provide a level of current income which exceeds the average yield on U.S. stocks generally, and which will generally grow, subject to periodic fluctuations, over the years on a per share basis.
The fund invests in a diversified portfolio of income-producing securities, primarily stocks and bonds selected by Thornburg Investment Management for their ability to generate current income, with at least 50% in common stocks and at least 80% overall in income-producing securities. Equity holdings emphasize dividend-paying companies, including smaller-cap and international stocks, while debt holdings span all credit qualities including high-yield bonds with no minimum rating requirement. Because performance depends on Thornburg's security selection and the fund may hold convertible bonds and other hybrid instruments alongside equities and debt of varying maturities and credit quality, results will diverge from any broad market benchmark.
| Share class | Gross | Net | As of |
|---|---|---|---|
| TIBAX | 1.17% | — | 2025 Q1 |
| TIBCX | 1.93% | — | 2025 Q1 |
| TIBIX | 0.93% | — | 2025 Q1 |
| TIBRX | 1.72% | 1.54% | 2025 Q1 |
| TIBMX | 1.29% | 1.03% | 2025 Q1 |
| TIBGX | 1.61% | 1.44% | 2025 Q1 |
| TIBOX | 0.87% | 0.84% | 2025 Q1 |
Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.
Portfolio turnover 27.78% · as of 2026 Q1
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q1
| Stocks | 93.39% |
| Bonds | 3.96% |
| Securitized | 2.21% |
| Loans | 0.25% |
| Derivatives | -0.03% |
The outer band is exposure held short — written against the portfolio rather than part of it, which is why it sits outside the ring and why the two are never netted into one figure.
Derivatives are shown at market value, not notional exposure.
Latest quarter
What changed since the fund's previous filing
Largest new: Roche Holding AG, Nestle SA, Daimler Truck Holding AG, Swisscom AG, Midea Group Co Ltd, Reckitt Benckiser Group PLC, Cie Generale des Etablissements Michelin SCA, EMERA INC
Exited: Roche Holding AG, Siemens AG, CITIGROUP INC, Homeward Opportunities Fund I Trust, MATTHEWS INTERNATIONAL C, BOOST NEWCO BORROWER LLC
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Feb 2026
| Share class | 1-year | 3-year | 5-year | Vol | Worst fall |
|---|---|---|---|---|---|
| — | — | — | — | — | |
| — | — | — | — | — | |
| — | — | — | — | — | |
| — | — | — | — | — | |
| — | — | — | — | — | |
| — | — | — | — | — | |
| — | — | — | — | — |
Mar 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-03-31
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 68.6% |
| Floating rate | 27.3% |
| Zero-coupon or unclassified | 4.1% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 7.9% |
| 1-3y | 18.9% |
| 3-5y | 15.6% |
| 5-10y | 17.3% |
| 10y+ | 40.4% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Value | Shares |
|---|---|---|---|---|
| — | Orange SA | 7.01% | $1.48B | 72.1M |
| — | Thornburg Capital Management Fund | 5.73% | $1.21B | 120.9M |
| — | Taiwan Semiconductor Manufacturing Co Ltd | 4.84% | $1.02B | 17.6M |
| C | Citigroup IncC | 3.76% | $792.39M | 7.0M |
| T | AT&T IncT | 3.71% | $782.81M | 27.0M |
| — | TotalEnergies SE | 3.60% | $760.37M | 8.3M |
| — | BNP Paribas SA | 3.56% | $751.85M | 7.9M |
| — | NN Group NV | 3.55% | $748.31M | 9.6M |
| — | Samsung Electronics Co Ltd | 3.06% | $646.70M | 5.5M |
| AVGO | Broadcom IncAVGO | 2.98% | $628.11M | 2.0M |
Top 10 positions are 41.80% of net assets, top 25 71.17%, across 212 issuers.
See more of this fund's book
More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.
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