Nuveen Core Impact Bond Fund (TSBBX) is an actively managed mutual fund that seeks favorable long-term total return, primarily through current income, by investing at least 80% of its assets in a broad spectrum of investment-grade, U.S. dollar-denominated fixed-income securities exhibiting environmental, social, and governance (ESG) leadership and/or direct, measurable environmental and social impact. The fund's core holdings include U.S. government securities such as Treasury notes and bonds; corporate bonds; mortgage-backed securities from issuers like Federal Home Loan Mortgage Corp.; municipal bonds; asset-backed securities; and other investment-grade debt instruments across sectors like government, securitized, and corporate, with allocations emphasizing ESG criteria. It targets institutional and retirement investors seeking core bond exposure with impact investing characteristics, operating primarily in U.S. fixed-income markets.
Previously known as TIAA-CREF Core Impact Bond Fund, the fund underwent a name change to Nuveen Core Impact Bond Fund effective May 1, 2024, as part of a broader rebranding of TIAA-CREF fixed-income funds to the Nuveen brand, approved by the Board of Trustees; this included share class renaming such as Retirement Class retaining TSBBX while Institutional Class shifted to R6 nomenclature effective May 6, 2024. No changes to investment objectives, principal strategies, risks, or portfolio management accompanied the rebranding. The fund, managed under Nuveen, continues to focus on the intermediate core bond segment without reported recent acquisitions, partnerships, funding rounds, or new product launches as of late 2025.