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AGG iShares Core U.S. Aggregate Bond ETF

Category: Total Bond Market

Inception: 2003-09-22 Issuer: BlackRock, Inc.
Net Assets
$125.2B
Expense Ratio
0.03 %
# of Holdings
12
Average Daily Volume
8.78M

Fund Overview

The iShares Core U.S. Aggregate Bond ETF (AGG) is designed to provide broad exposure to the U.S. investment-grade bond market. It tracks the Bloomberg U.S. Aggregate Bond Index, which includes U.S. Treasury bonds, government-related bonds, corporate bonds, and mortgage-backed securities (MBS) with maturities of at least one year. AGG is one of the largest and most liquid bond ETFs, making it a popular choice for investors seeking diversified fixed-income exposure. The fund is widely used as a core holding in portfolios due to its low cost and comprehensive coverage of the U.S. bond market. AGG offers a balance of yield and risk, making it suitable for both conservative investors and those looking to diversify equity-heavy portfolios.
Asset Class
Bond
Industry
N/A
Annual Dividend Rate
Smart Beta
No
Leveraged / Inverse
N/A / No
Dividend Quality - Yield
 - 4.39 %
Currency Hedged
No
Portfolio Turnover
89 %
Dividend Date

Why Invest in the AGG ETF?

Potential Benefits

  • Provides diversified exposure to the U.S. investment-grade bond market, reducing single-security risk.
  • Low expense ratio (0.03% as of 2025) makes it cost-effective for long-term investors.
  • High liquidity allows for easy trading and tight bid-ask spreads.
  • Acts as a stabilizing force in portfolios during equity market downturns.
  • Regular income through monthly distributions of interest payments.
  • Broad market coverage includes Treasuries, corporates, and mortgage-backed securities.

Potential Risks

  • Interest rate risk: Rising rates can lead to declining bond prices, negatively impacting returns.
  • Credit risk: Although investment-grade, corporate bonds in the fund may face downgrades or defaults.
  • Inflation risk: Fixed coupon payments may lose purchasing power over time if inflation rises.
  • Limited yield potential compared to high-yield or emerging market bonds.
  • Prepayment risk for mortgage-backed securities if homeowners refinance at lower rates.
  • Duration risk: The fund's average duration affects sensitivity to interest rate changes.

Performance

1 Week 1 Month 1 Year 3 Years 5 Years YTD 2025 2024 Since Inception
-0.56% -2.33% -2.17% +13.54% -3.26% -2.71% +7.18% +1.79% +92.37%

Performance


Monthly Returns (%)

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2026 +0.3% +1.6% -1.8% +0.2% +0.3% +0.3% -1.3% +0.4% -2.6% 0.0% - -
2025 +0.5% +2.2% 0.0% +0.4% -0.6% +1.5% -0.3% +1.2% +1.1% +0.6% +0.6% -0.3%
2024 -0.2% -1.5% +0.9% -2.5% +1.7% +0.9% +2.4% +1.5% +1.3% -2.5% +1.1% -1.7%
2023 +3.3% -2.7% +2.6% +0.6% -1.1% -0.4% 0.0% -0.6% -2.6% -1.6% +4.6% +3.7%
2022 -2.0% -1.1% -2.8% -3.8% +0.8% -1.6% +2.5% -3.0% -4.1% -1.3% +3.8% -0.9%
2021 -0.7% -1.5% -1.1% +0.7% +0.2% +0.8% +1.1% -0.2% -0.9% 0.0% +0.3% -0.4%
2020 +2.0% +1.6% -0.5% +1.7% +0.7% +0.7% +1.3% -0.8% -0.1% -0.6% +1.2% +0.1%
2019 +0.9% -0.1% +2.1% -0.2% +1.9% +1.1% +0.2% +2.8% -0.6% +0.2% 0.0% 0.0%
2018 -1.1% -1.0% +0.7% -0.9% +0.7% +0.1% 0.0% +0.6% -0.6% -0.6% +0.5% +2.0%
2017 +0.2% +0.6% -0.1% +0.9% +0.7% 0.0% +0.3% +0.9% -0.6% +0.1% -0.1% +0.5%
< -5% -5% to -2% -2% to 0% 0% 0% to +2% +2% to +5% > +5%

Top Holdings (by weight)

Symbol Company Name Weight
No holdings data available.

Related ETFs: AGG vs Peers

ETF Full Name Expense Ratio Net Assets Holdings Asset Class
BND Vanguard Total Bond Market ETF 0.03 % $355.2B 17 Bond
BNDX Vanguard Total International Bond ETF 0.07 % $100.6B 6 Bond
HYG iShares iBoxx $ High Yield Corporate Bond ETF 0.49 % $15.1B 1 Bond
IEI iShares 3-7 Year Treasury Bond ETF 0.15 % $15.6B 105 Bond
LQD iShares iBoxx $ Investment Grade Corporate Bond ETF 0.14 % $29.6B 2 Bond
SCHZ Schwab U.S. Aggregate Bond ETF 0.03 % $8.6B 10 Bond
SHY iShares 1-3 Year Treasury Bond ETF 0.15 % $22.9B 127 Bond
TLT iShares 20+ Year Treasury Bond ETF 0.15 % $52.8B 48 Bond
VCIT Vanguard Intermediate-Term Corporate Bond ETF 0.03 % $53.5B 2 Bond
VCSH Vanguard Short-Term Corporate Bond ETF 0.03 % $41.4B 2 Bond
Comparison highlights key differences on cost, coverage, and focus within sector ETFs.

Investment Strategy

AGG seeks to track the performance of the Bloomberg U.S. Aggregate Bond Index, a market-cap-weighted benchmark representing the U.S. investment-grade bond market. The index includes Treasury bonds, government-related bonds, corporate bonds, and mortgage-backed securities with maturities of at least one year. The fund employs a passive management approach, aiming to replicate the index's holdings and performance. It primarily holds physical bonds rather than derivatives, providing direct exposure to the underlying securities. AGG is rebalanced monthly to align with index changes, ensuring accurate tracking. The fund's broad diversification across sectors and maturities helps reduce concentration risk.

Frequently Asked Questions

What types of bonds does AGG hold?

AGG holds U.S. Treasuries, government-related bonds, investment-grade corporate bonds, and mortgage-backed securities, all with maturities of at least one year.

How often does AGG pay dividends?

AGG distributes interest income to shareholders monthly, providing a steady stream of income.

Is AGG a good hedge against stock market volatility?

Yes, AGG's bond holdings often perform well during equity market downturns, making it a potential stabilizer in diversified portfolios.

What is AGG's average duration?

As of 2025, AGG has an average duration of approximately 6-7 years, indicating moderate sensitivity to interest rate changes.

Can AGG lose value?

Yes, AGG's NAV can decline due to rising interest rates, credit downgrades, or other market factors, though its diversified holdings help mitigate severe losses.

Industry Overview

The iShares Core U.S. Aggregate Bond ETF (AGG) provides exposure to the broad U.S. investment-grade bond market, which includes government, corporate, and securitized debt. This market is a cornerstone of fixed-income investing, offering stability and income generation. The U.S. bond market is influenced by macroeconomic factors such as interest rate policies, inflation expectations, and credit conditions. AGG's diversified approach helps mitigate sector-specific risks while capturing the overall performance of the investment-grade bond universe. Investors often use AGG as a core holding to balance equity risk or as a source of steady income.

Alternative Comparison

AGG's closest competitor is the Vanguard Total Bond Market ETF (BND), which also tracks the Bloomberg U.S. Aggregate Bond Index. While both funds offer similar exposure, AGG has a slightly lower expense ratio (0.03% vs. BND's 0.035%). Another alternative, the Schwab U.S. Aggregate Bond ETF (SCHZ), tracks the same index but has a marginally higher expense ratio (0.04%). Unlike specialized bond ETFs such as LQD (corporate bonds) or TLT (long-term Treasuries), AGG provides comprehensive exposure across the entire investment-grade bond spectrum. Investors prioritizing liquidity may prefer AGG due to its larger asset base and tighter spreads.

Issuer Overview

AGG is issued by iShares, a leading ETF provider and subsidiary of BlackRock, the world's largest asset manager. iShares is known for its extensive lineup of low-cost, index-tracking ETFs across various asset classes. BlackRock's scale and expertise in fixed-income markets contribute to AGG's efficient management and liquidity. The firm's robust risk management and operational infrastructure ensure the fund closely tracks its benchmark index.

Conclusion

The iShares Core U.S. Aggregate Bond ETF (AGG) is a well-established, low-cost option for gaining diversified exposure to the U.S. investment-grade bond market. Its broad coverage, liquidity, and stability make it a suitable core holding for conservative investors or as a diversifier in equity-heavy portfolios. While subject to interest rate and credit risks, AGG's passive approach and efficient tracking provide reliable access to the bond market's income potential. Investors should consider their risk tolerance and investment horizon when incorporating AGG into their strategies.

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