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Thornburg Investment Income Builder Fund Class A (TIBAX) Fund Overview

Educational signal · not a buy or sell recommendation · How to read this

$37.25 +$0.21 (+0.57%)

Beta 0.81: the stock has moved about 19% less than the S&P 500.

Data from FMP · Methodology

For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.5-flash, generated Jun 15, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR

Quick Answer

Thornburg Investment Income Builder Fund Class A (TIBAX) trades at $37.25. Sector: Financials.

Price as of · Last analyzed: Jun 15, 2026
The Thornburg Investment Income Builder Fund Class A (TIBAX) aims to provide current income exceeding the average yield on U.S. stocks, with long-term capital appreciation as a secondary objective. It achieves this by investing at least 80% of its assets in income-producing securities, including a minimum of 50% in common stocks.

Analyst Coverage for TIBAX: TIBAX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage.

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Thornburg Investment Income Builder Fund Class A (TIBAX) Financial Services Profile

HeadquartersSanta Fe, US
IPO Year2002

Thornburg Investment Income Builder Fund Class A (TIBAX) is an asset management fund focused on generating current income higher than the average U.S. stock yield, complemented by long-term capital appreciation. It strategically allocates at least 80% of its portfolio to diverse income-producing securities, with a significant portion in common stocks, positioning it within the income-focused investment segment.

Data Provenance | Financial Data Quantitative Analysis Analysis: Jun 15, 2026

What Is the Investment Thesis for TIBAX?

AI-written as of Jun 15, 2026 — figures and tone reflect the data available then, not today's score.

The Thornburg Investment Income Builder Fund Class A (TIBAX) presents a distinct investment proposition centered on its dual objective of superior current income and secondary long-term capital appreciation. With a substantial market capitalization of $22.32 billion, the fund demonstrates significant scale and investor confidence. Its investment mandate, requiring at least 80% of assets in income-producing securities and a minimum of 50% in common stocks, offers a diversified approach that can appeal to investors seeking both stability and growth potential. The fund's beta of 0.81 suggests a historical volatility profile that is lower than the broader market, potentially offering a degree of downside protection. Key growth catalysts include sustained demand for income-generating assets from an aging demographic and potentially favorable market conditions for dividend-paying equities and corporate bonds. However, the fund faces risks such as market volatility impacting both equity and fixed-income valuations, interest rate sensitivity affecting bond prices, and the potential for underperformance relative to its stated objectives or peer group, which could lead to investor outflows.

Based on FMP financials and quantitative analysis

TIBAX Key Highlights

AI-written as of Jun 15, 2026 — figures and tone reflect the data available then, not today's score.

Market Capitalization of $22.32 billion, indicating significant assets under management and market presence within the asset management industry.

  • Beta of 0.81, suggesting the fund has historically exhibited lower volatility compared to the overall market.
  • Primary investment objective to provide current income exceeding the average yield on U.S. stocks, differentiating its income focus.
  • Mandate to invest at least 80% of its assets in income-producing securities, ensuring a strong commitment to its income generation goal.
  • Minimum allocation of 50% of assets to common stocks, providing a substantial equity component for potential capital appreciation.

Who Are TIBAX's Competitors?

TIBAX is benchmarked below against 6 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap MoonshotScore
JARTX Janus Henderson Forty Fund $55.34 +1.43% $24.6B —
JCAPX Janus Henderson Forty Fund Class I $65.64 +1.44% $25.4B —
JFRDX Janus Henderson Forty D $57.84 +1.44% $25.4B —
JACTX Janus Henderson Forty Fund - T Shares $58.80 +1.45% $25.3B —
GAIFX American Funds Growth and Income Portfolio Class F-1 $22.73 +0.49% $23.1B —
EICA Eagle Point Income Company Inc. $25.00 +0.12% $234M 36 5-pillar

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are TIBAX's Key Strengths?

Clear and attractive primary objective of providing current income exceeding average U.S. stock yields.

  • Diversified investment mandate across both equity (minimum 50%) and fixed-income (minimum 80% income-producing) securities.
  • Relatively lower beta of 0.81 suggests potentially lower volatility compared to the broader market.
  • Significant market capitalization of $22.32 billion, indicating substantial scale and investor base.

What Are TIBAX's Weaknesses?

Explicitly states 'None (no dividend)' for the fund itself, which might be counterintuitive for an 'income builder' fund (though it distributes income to shareholders).

  • Reliance on active management expertise, which may or may not consistently outperform passive alternatives.
  • Inherent management fees associated with actively managed funds, which can erode returns over time.
  • Performance is directly tied to the success of security selection within its broad investment universe.

What Are the Key Risks for TIBAX?

Market volatility impacting both equity and fixed-income holdings, potentially leading to fluctuations in the fund's net asset value and income distributions.

  • Interest rate fluctuations, particularly rising rates, which can negatively affect the valuation of bond holdings within the fund's portfolio.
  • Underperformance relative to its stated income objectives or peer group, which could lead to investor redemptions and a decrease in assets under management.
  • Credit risk associated with the fund's bond holdings, where issuers may default on their obligations, impacting the fund's income and capital.
  • Regulatory changes within the asset management industry that could impose new compliance burdens or alter investment strategies.

What Threats Does TIBAX Face?

  • Market downturns impacting both equity and fixed-income holdings, leading to capital depreciation and reduced income streams.
  • Rising interest rates, which can negatively affect bond valuations and increase the cost of capital for companies.
  • Intense competition from other income-focused funds, including lower-cost passive ETFs.
  • Potential for underperformance relative to benchmarks or peer funds, leading to investor outflows and reduced AUM.

What Are TIBAX's Competitive Advantages?

  • Clearly defined investment strategy focused on exceeding average U.S. stock yields for current income, appealing to a specific investor segment.
  • Diversified portfolio mandate across both stocks and bonds, offering a balanced approach to risk and return.
  • Potential for active management expertise in security selection to identify undervalued income-producing assets and navigate market cycles.
  • Established presence within the asset management industry, benefiting from brand recognition and distribution channels associated with Thornburg Investment Management.

What Does TIBAX Do?

The Thornburg Investment Income Builder Fund Class A (TIBAX), headquartered in Santa Fe, US, operates within the Financial Services sector, specifically the Asset Management - Income industry. The fund's primary investment objective is to deliver a level of current income that consistently surpasses the average yield observed on U.S. stocks. This focus on income generation is complemented by a secondary objective of achieving long-term capital appreciation for its investors. To pursue these goals, TIBAX employs a diversified investment strategy, allocating its assets across a broad spectrum of income-producing securities. Under normal market conditions, the fund commits at least 80% of its total assets to these income-generating instruments, which primarily include a combination of common stocks and various types of bonds. Furthermore, to ensure a robust equity component within its income-focused strategy, at least 50% of the fund's assets are invested in common stocks. This blend of equity and fixed-income exposure aims to provide both a steady stream of income and the potential for growth, positioning TIBAX as a comprehensive solution for investors seeking both current payouts and long-term wealth accumulation. The fund's approach reflects a commitment to active management, seeking to identify and invest in securities that align with its dual objectives within the dynamic global markets.

What Products and Services Does TIBAX Offer?

  • Manages the Thornburg Investment Income Builder Fund Class A (TIBAX).
  • Seeks to provide current income that exceeds the average yield on U.S. stocks.
  • Pursues long-term capital appreciation as a secondary investment objective.
  • Invests in a broad range of income-producing securities.
  • Primarily allocates assets to a combination of common stocks and bonds.
  • Commits at least 80% of its assets to income-producing securities under normal conditions.
  • Ensures at least 50% of its assets are invested in common stocks.
  • Aims to offer investors a diversified approach to income generation and growth.

How Does TIBAX Make Money?

  • Generates revenue primarily through management fees charged on the fund's total assets under management (AUM).
  • Aims to attract and retain investors by consistently achieving its stated investment objectives of high current income and long-term capital appreciation.
  • Employs active portfolio management strategies to select and manage a diversified portfolio of income-producing stocks and bonds.

What Industry Does TIBAX Operate In?

The Thornburg Investment Income Builder Fund Class A operates within the highly competitive Asset Management - Income industry, a segment of the broader Financial Services sector. This industry is characterized by a persistent demand for investment products that offer consistent income streams, particularly from retirees and investors seeking stable cash flow in varying economic environments. TIBAX positions itself as an actively managed fund designed to meet this demand by targeting current income that surpasses the average yield of U.S. stocks, alongside a secondary objective of long-term capital appreciation. The competitive landscape includes a wide array of mutual funds and exchange-traded funds (ETFs) that also focus on income, growth, or a hybrid approach. Market trends indicate a growing preference for diversified portfolios that can navigate interest rate fluctuations and equity market volatility, making funds with a balanced stock and bond allocation, like TIBAX, relevant to a broad investor base. The fund's strategy aims to differentiate itself through its specific income target and its flexible investment mandate across stocks and bonds.

Who Are TIBAX's Key Customers?

  • Individual investors seeking a combination of current income and long-term capital growth.
  • Financial advisors and wealth management firms allocating client assets to income-focused strategies.
  • Retirement savers and retirees looking for consistent income streams from their investment portfolios.
  • Potentially institutional investors seeking diversified income exposure within their broader asset allocations.
Model self-rating on this text: 73% (not a measure of the evidence) Updated: Jun 15, 2026

Research confidence

Low

Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.

  • ● Scoring coverage unknown
  • ● Price is current
  • ● No filing on record
  • ● No analyst coverage
  • ● This is a fund, not an operating company

MoonshotScore History

Recorded daily since 2026-08-23 · 41 snapshots

2026-08-23 50
2026-08-31 50
2026-09-08 50
2026-09-16 50
2026-09-24 50
2026-10-04 50

What changed?

The score has stayed at 50.

Over the same 30 days the stock moved -3.7%.

TIBAX Financials

Bull Case vs Bear Case

Bull Case

  • Clear and attractive primary objective of providing current income exceeding average U.S. stock yields.
  • Diversified investment mandate across both equity (minimum 50%) and fixed-income (minimum 80% income-producing) securities.
  • Relatively lower beta of 0.81 suggests potentially lower volatility compared to the broader market.
  • Significant market capitalization of $22.32 billion, indicating substantial scale and investor base.

Bear Case

  • Explicitly states 'None (no dividend)' for the fund itself, which might be counterintuitive for an 'income builder' fund (though it distributes income to shareholders).
  • Reliance on active management expertise, which may or may not consistently outperform passive alternatives.
  • Inherent management fees associated with actively managed funds, which can erode returns over time.
  • Performance is directly tied to the success of security selection within its broad investment universe.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · June 2026

TIBAX Latest News

TIBAX Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations collected by Financial Modeling Prep for TIBAX.

Price Targets

Wall Street price target analysis for TIBAX.

TIBAX MoonshotScore

MoonshotScore is Stock Expert AI's proprietary 0-100 research rating, not a buy or sell recommendation. No MoonshotScore is published for TIBAX; grades run from A+ (80-100) to F (below 30).

Common Questions About TIBAX (Financials)

What is Thornburg Investment Income Builder Fund Class A's investment strategy and primary objectives?

The Thornburg Investment Income Builder Fund Class A (TIBAX) is designed with a clear dual investment objective. Its primary goal is to provide a level of current income that surpasses the average yield of U.S. stocks.

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated

MoonshotScore is not published for this security.

Data Sources & Methodology
Figures come from Financial Modeling Prep (FMP). If FMP has no figure for a ticker, a price or fundamental may come from a Yahoo Finance fallback, or a price from an Alpaca fallback. SEC EDGAR is used only for filing links and company identity details (legal name, address), never for figures. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • Information is based solely on provided source data. General fund operational aspects (e.g., management fees, customer types) are inferred as standard for the asset management industry.
Data Sources
Financial Modeling Prep (FMP)Stock Expert AI proprietary analysis