Hartford Sustainable Income ETF (HSUN) is an actively managed, ESG-focused fixed income exchange-traded fund that seeks to provide current income and long-term total return within a sustainability framework. Launched in September 2021 and issued by Hartford Funds, a subsidiary of The Hartford Financial Services Group, Inc., the ETF invests primarily in a diversified portfolio of domestic and foreign debt securities selected for attractive yields while incorporating sustainable investing criteria; these include investment grade bonds, high yield (non-investment grade) bonds, bank loans, emerging market debt, U.S. government and agency securities, securitized debt such as mortgage-backed and asset-backed securities, and derivatives like futures, swaps, options, and forward foreign currency contracts for risk management. Sub-advised by Wellington Management Company LLP, the fund targets issuers demonstrating commitment to positive social and environmental impact, leadership or improvement in environmental, social, and governance (ESG) characteristics, or engagement on ESG practices, with at least 80% of assets in such securities; it benchmarks performance against the Bloomberg U.S. Aggregate Bond Index and serves institutional and retail investors seeking income with sustainability considerations across global fixed income markets.
Headquartered in Wayne, Pennsylvania, where Hartford Funds was founded in 1996, the ETF operates globally through its underlying holdings in U.S. dollar-denominated and foreign securities, including those from emerging markets.
In recent developments, the fund underwent a name change to Hartford Strategic Income ETF and a ticker symbol change from HSUN to HFSI effective September 30, 2024, and April 15, 2025, respectively, reflecting a strategic shift away from the explicit sustainable branding while retaining its multi-sector fixed income approach.