Thornburg Investment Income Builder Fund Outperforms in 2025

The mutual fund saw a 36.93% return, beating its benchmark.

Published on Mar. 11, 2026

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Thornburg Investment Management, a privately owned global investment firm, reported that its Thornburg Investment Income Builder Fund outperformed its benchmark in 2025 with a 36.93% return. The firm oversees mutual funds, institutional accounts, separate accounts for high-net-worth investors, and UCITS funds for non-U.S. investors.

Why it matters

Thornburg Investment Management is a recognized leader in fixed income, equity, and alternatives investing, and the strong performance of its Thornburg Investment Income Builder Fund in 2025 demonstrates the firm's investment expertise and ability to deliver solid returns for its clients.

The details

The Thornburg Investment Income Builder Fund, which invests in a mix of stocks and bonds, saw a 36.93% return in 2025, outperforming its benchmark. Thornburg Investment Management, founded in 1982 and headquartered in Santa Fe, NM, offers a range of multi-strategy solutions for institutions and financial advisors.

  • The Thornburg Investment Income Builder Fund reported its Q4 2025 commentary on March 11, 2026.

The players

Thornburg Investment Management

A privately owned global investment firm that offers a range of multi-strategy solutions for institutions and financial advisors, including mutual funds, institutional accounts, separate accounts for high-net-worth investors, and UCITS funds for non-U.S. investors.

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The takeaway

Thornburg Investment Management's strong performance with its Thornburg Investment Income Builder Fund in 2025 demonstrates the firm's investment expertise and ability to deliver solid returns for its clients, even in challenging market conditions.