Abacus FCF ETF Trust - Abacus Flexible Bond Leaders ETF (ABXB) is an exchange-traded fund that seeks to provide investment results corresponding to the performance of the Abacus Flexible Bond Leaders Index before fees and expenses; the fund invests at least 80% of its net assets in component securities of the index, including fixed income instruments such as emerging markets bonds, high yield corporate bonds, senior loans, mortgage-backed securities and international treasury bonds; top holdings include iShares J.P. Morgan USD Emerging Markets Bond ETF, iShares iBoxx $ High Yield Corporate Bond ETF, iShares 0-5 Year High Yield Corporate Bond ETF, Invesco Senior Loan ETF and iShares International Treasury Bond ETF. Abacus FCF ETF Trust, established in 2015 and domiciled in the United States with principal operations in Orlando, Florida, serves as the issuer for a suite of ETFs managed by Abacus FCF Advisors LLC focusing on free cash flow-based and flexible income strategies; the ABXB ETF, launched on December 7, 2020, targets nontraditional bond categories with allocations across U.S. and non-U.S. bonds, corporate bonds, government securities, bank loans and cash equivalents; it operates primarily in U.S. markets with global fixed income exposure. In late 2024, Abacus Life completed the acquisition of FCF Advisors, adding approximately $850 million in assets under management and integrating FCF's free cash flow strategies into Abacus' ABL Wealth division; this transaction, finalized in December 2024, expanded product offerings with rebranded funds and new ETFs while enhancing quantitative investment capabilities; Abacus FCF Advisors now emphasizes FCF-ROIC analysis across its ETF lineup, including ABXB, with ongoing rebranding efforts completed by February 2025.