iShares Core U.S. Aggregate Bond ETF

iShares Core U.S. Aggregate Bond ETF is an exchange-traded fund that seeks to track the Bloomberg US Aggregate Bond Index, providing broad exposure to the total U.S. investment-grade bond market. It includes a diverse portfolio of over 13,000 holdings comprising U.S. Treasury securities, government-related bonds, corporate bonds, mortgage-backed securities, asset-backed securities, and commercial mortgage-backed securities. The fund emphasizes investment-grade debt with varying maturities, typically featuring a weighted average maturity around eight years and an effective duration of approximately six years. Managed by BlackRock with an expense ratio of 0.03%, iShares Core U.S. Aggregate Bond ETF pays monthly dividends and serves as a core fixed-income holding for investors seeking income generation and portfolio diversification. Its composition reflects sector allocations such as government bonds, mortgage-backed securities, and corporate debt, offering representation across different maturity buckets from short-term to long-term instruments. Launched in 2003 and headquartered in San Francisco, California, this ETF plays a key role in balanced investment strategies by delivering comprehensive access to the U.S. bond market's investment-grade segment.