iShares iBonds Dec 2029 Term Corporate ETF (IBDU) is an exchange-traded fund that seeks to track the investment results of an index composed of U.S. dollar-denominated, investment-grade corporate bonds maturing between January 1, 2029, and December 15, 2029. The fund employs a representative sampling technique to replicate the performance of the Bloomberg December 2029 Maturity Corporate Index, holding a diversified portfolio of approximately 600 bonds issued by corporations across sectors such as healthcare, automotive finance, telecommunications, and technology; top holdings include AbbVie Inc., Ford Motor Credit Company LLC, General Motors Financial Company Inc., T-Mobile USA Inc., and Broadcom Inc. It provides monthly income distributions from bond coupons and principal repayments, with an expense ratio of 0.10%, a weighted average maturity of approximately 3.85 years, and effective duration of 3.47 years, transitioning to cash and cash-like instruments in its final months before terminating on or about December 15, 2029. Launched on September 17, 2019, and domiciled in the United States, IBDU is issued by iShares Trust and managed by BlackRock Fund Advisors, with total net assets exceeding $2.5 billion as of late 2025. The fund targets investors seeking targeted exposure to the intermediate-term investment-grade corporate bond segment, primarily in the U.S. fixed income market. Recent developments include consistent monthly dividend declarations throughout 2025, such as $0.09048 per share ex-dividend on September 2, 2025, and $0.09149 per share on June 2, 2025, alongside ongoing portfolio rebalancing to maintain alignment with the maturing index composition amid fluctuating interest rates.