Thornburg Income Builder Opportunities Trust Business Summary

Thornburg Income Builder Opportunities Trust (TBLD) is a closed-end management investment company that generates revenue primarily through a management fee of 1.25% on daily managed assets, alongside investment income from its diversified portfolio. The Trust operates through a multi-asset strategy, segmenting its capital across global equity securities (typically 70% of the portfolio) and opportunistic fixed-income instruments (approximately 30%). Its business model leverages a dynamic options-writing strategy to enhance current income and mitigate volatility, focusing on high-conviction, income-producing assets across sectors like technology, healthcare, and financials. TBLD competes directly with other global multi-asset closed-end funds such as Calamos Strategic Total Return Fund (CSQ), Calamos Global Dynamic Income Fund (CHW), and abrdn Global Infrastructure Income Fund (ASGI), positioning itself as a defensively tilted, value-oriented alternative with a heavy emphasis on European and emerging market dividend-payers. Managed by Thornburg Investment Management, the Trust is led by President and CEO Mark Zinkula, who previously served as CEO of Legal & General Investment Management. The portfolio is overseen by Head of Equities Matt Burdett, a former PIMCO senior vice president, and Head of Fixed Income Christian Hoffmann, who brought expertise in distressed debt from H.I.G. Capital. The firm was founded in 1982 by Garrett Thornburg, who remains Chairman and is a prominent figure in the Santa Fe financial community, alongside Vice-Chairman Brian McMahon, the firm’s long-standing Chief Investment Strategist. This leadership team is supported by a board of trustees that includes independent members with deep institutional backgrounds, ensuring rigorous oversight of the Trust’s $740 million in assets as of early 2026.