# Thornburg Investment Income Builder Fund Class R5 (TIBMX): Mutual Fund Facts & Distributions > Markdown mirror of https://www.dividenddata.com/funds/tibmx for AI agents. Same live data as the HTML page, regenerated on the same refresh cycle. Not investment advice. - Issuer: Thornburg · Asset class: Equity - Strategy: Thematic · Inception: 2007-02-01 This fund is designed to generate a consistent stream of income that exceeds the typical yield from U.S. stocks, with long-term capital growth being a secondary objective. It achieves these goals by diversifying its investments across a wide range of income-generating securities, primarily corporate stocks and fixed-income instruments. Under normal market conditions, the fund commits a minimum of 80% of its portfolio to income-producing assets, and at least 50% of its holdings are allocated to common shares. ## Key Facts | Metric | Value | |---|---| | Price | $37.26 | | Expense Ratio | 1.02% | | Assets Under Management | $22.64B | | NAV | $37.26 | | Holdings Count | — | | Distribution Yield (TTM) | 3.43% | | Annual Distribution (TTM) | $1.28 /share | | Distribution Frequency | Quarterly | | 52-Week Range | $31.41 – $39.18 | | Beta | 0.77 | ## Latest Distribution - Amount: $0.3378 /share - Ex-date: 2026-09-17 - Pay date: 2026-09-17 ## Frequently Asked Questions ### What does TIBMX invest in? This fund is designed to generate a consistent stream of income that exceeds the typical yield from U.S. stocks, with long-term capital growth being a secondary objective. It achieves these goals by diversifying its investments across a wide range of income-generating securities, primarily corporate stocks and fixed-income instruments. Under normal market conditions, the fund commits a minimum of 80% of its portfolio to income-producing assets, and at least 50% of its holdings are allocated to common shares. ### What is the expense ratio of TIBMX? Thornburg Investment Income Builder Fund Class R5 (TIBMX) charges an expense ratio of 1.02%. This is the annual fee deducted from fund assets to cover management and operations. ### What is TIBMX's dividend yield? TIBMX's trailing-twelve-month yield is 3.43%, calculated from the sum of dividends over the past year divided by the current price. ### How big is TIBMX? Thornburg Investment Income Builder Fund Class R5 (TIBMX) manages $22.64B in total assets. AUM determines bid-ask liquidity and the fund's vulnerability to closure. Funds below ~$50M are at higher risk of liquidation. ### Is TIBMX actively managed or an index fund? TIBMX's management style is described in the fund's prospectus. See the description on the Summary tab for the published strategy. ### When was TIBMX launched? Thornburg Investment Income Builder Fund Class R5 (TIBMX) launched in February 2007 and is managed by Thornburg. ### Does TIBMX pay a dividend? Yes, Thornburg Investment Income Builder Fund Class R5 (TIBMX) distributes dividends to shareholders. The trailing-twelve-month yield is 3.43%. Full dividend history is on this page. ### How often does TIBMX pay dividends? Thornburg Investment Income Builder Fund Class R5 pays dividends Quarterly. Each ex-dividend date, record date, and payment date is listed in the dividend history table on this page. ### When is TIBMX's next ex-dividend date? The most recently announced ex-dividend date for TIBMX was 2026-09-17. The next ex-date typically follows Quarterly; once announced it appears at the top of the dividend history table on this page. ### How much will TIBMX's expense ratio cost me over 30 years? On a $10,000 investment compounding at 7% gross return, a 1.02% expense ratio quietly compounds against your balance every year. The Fee Compounding Forecast card above projects the dollar drag for any holding period and assumption you pick. The typical result for a 1.0% expense ratio on a 30-year hold is roughly 25% of the final balance lost to fees. ### How does TIBMX charge its expense ratio? The expense ratio is deducted in tiny daily slices from TIBMX's net asset value (NAV). You never see a bill. The price quoted on every exchange is already net of fees. There's no "fee day" to avoid; the cost is continuous and built into the trading price. ### Why does TIBMX cost more than a fund like VOO? TIBMX's strategy (current expense ratio 1.02%) is different from a broad-market index tracker like VOO, so its fee belongs to a different cohort. The Cost Verdict card above shows you where TIBMX sits within its own category, which is the comparison that actually matters. ### Are there cheaper alternatives to TIBMX? The Lower-Fee Alternatives card above lists mutual funds following the same investment strategy as TIBMX (1.02%) but at a lower expense ratio. Each row shows the fee gap, the peer's AUM as a liquidity sanity-check, and a direct link to that fund's analysis page. Cheaper price doesn't automatically mean better. Verify the peer holds what you actually want. ## More on Dividend Data - Overview (HTML): https://www.dividenddata.com/funds/tibmx - Distribution history: https://www.dividenddata.com/funds/tibmx/dividend - Holdings & diversification: https://www.dividenddata.com/funds/tibmx/diversification - Fees & cheaper alternatives: https://www.dividenddata.com/funds/tibmx/expenses - Peer comparison: https://www.dividenddata.com/funds/tibmx/peers Data sourced from primary filings and market data providers; see https://www.dividenddata.com/methodology.