BondBloxx USD High Yield Bond Sector Rotation ETF (HYSA) is an actively managed exchange-traded fund that seeks total return by investing primarily in U.S. dollar-denominated high yield corporate bonds across various sectors through a portfolio of underlying BondBloxx ETFs; it allocates among high yield bond industry sector ETFs such as the USD High Yield Bond Industrial Sector ETF (XHYI), Telecom, Media & Technology Sector ETF (XTMY), Financial & REIT Sector ETF (XHYF), Consumer Cyclicals Sector ETF (XHYC), Energy Sector ETF (XHYE), Healthcare Sector ETF (XHYY), Consumer Non-Cyclicals Sector ETF (XHYC), and high yield bond credit rating ETFs including the CCC-Rated USD High Yield Corporate Bond ETF (XCCC) and BB-Rated USD High Yield Corporate Bond ETF (XBBB). The fund employs a sector rotation strategy combining bottom-up fundamental analysis and top-down positioning to drive alpha, with monthly distributions, a net expense ratio cap of 0.55% through 2026, and benchmarking against the ICE BofA US Cash Pay High Yield Constrained Index. Launched under BondBloxx Investment Management LLC in Larkspur, California, HYSA traces its inception to September 18, 2023, following a reorganization whereby it acquired the assets and liabilities of the Highland iBoxx Senior Loan ETF (SNLN), shifting from passive senior loan tracking to active high yield sector rotation. As of December 2025, the fund manages approximately $31.5 million in net assets, predominantly in corporate high yield holdings (99.1%), with top sector exposures in energy, healthcare, media, and basic industry, targeting institutional and retail fixed income investors seeking yield and liquidity via NYSE Arca trading. Recent developments include BondBloxx's release of its 2026 Fixed Income Outlook in December 2025 and recognition as the 2025 Best International Fixed Income ETF Issuer, alongside ongoing portfolio adjustments reflecting experienced management by Elya Schwartzman, Daniel Goldman, and JoAnne Bianco, CFA.