AGG — iShares Core U.S. Aggregate Bond ETF
Data updated: 2026-10-23
AGG — iShares Core U.S. Aggregate Bond ETF. 0.03% expense ratio · since 2003 · Intermediate Core Bond. Holdings, fees, performance and SEC filings.
AGG Fund Overview
AGG — iShares Core U.S. Aggregate Bond ETF is a US ETF managed by BlackRock Fund Advisors, categorised as Intermediate Core Bond. AGG tracks the Bloomberg US Aggregate Bond Index. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF (index fund)
- Adviser: BlackRock Fund Advisors
- Trust: iSHARES TRUST
- Category: Intermediate Core Bond
- Minimum investment: none, traded on an exchange
- Benchmark: Bloomberg US Aggregate Bond Index
- Inception date: September 22, 2003
- Exchange: NYSE Arca
- Assets under management: $138.32B
- 1-year return: 1.9%
- Ticker: AGG
- SEC CIK: 0001100663
- SEC series ID: S000004362
- Share class ID: C000012092
- CUSIP: 464287226
- ISIN: US4642872265
- FIGI: BBG000Q123R0
- LEI: 549300F7VSXTKBGHJE47
About AGG
The iShares Core U.S. Aggregate Bond ETF (AGG) seeks to track the investment results, before fees and expenses, of the Bloomberg U.S. Aggregate Bond Index, which measures the total U.S. investment-grade bond market. It uses a representative sampling indexing strategy, investing at least 80% of its assets in the index's component securities and TBAs and at least 90% in fixed income securities of the types included in the index. Listed on NYSE Arca since September 22, 2003, AGG costs 0.03% a year and returned 1.9% in the 12 months to August 31, 2026, based on monthly returns reported to the SEC on Form N-PORT, with 3.2% volatility.
AGG Holdings
Top 10 holdings of iShares Core U.S. Aggregate Bond ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Blackrock Cash Funds | 3.01% |
| BlackRock Funds III | 0.52% |
| United States Treasury | 0.41% |
| United States Treasury | 0.40% |
| United States Treasury | 0.40% |
| United States Treasury | 0.40% |
| United States Treasury | 0.39% |
| United States Treasury | 0.39% |
| United States Treasury | 0.39% |
| United States Treasury | 0.38% |
AGG Portfolio Allocation
Asset-class allocation of iShares Core U.S. Aggregate Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 73.6% |
| Securitized | 24.8% |
| Cash & Equivalents | 3.5% |
AGG Performance
Total returns for AGG through August 2026, from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.23% |
| 1 year | 1.88% |
| 3 years (annualised) | 4.07% |
| 5 years (annualised) | -0.28% |
AGG Risk Information
Risk metrics for AGG, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.21%
AGG Costs and Fees
AGG costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.03%
- Portfolio turnover: 62%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
AGG Cashflows
Over the 12 months to 2026-08, iShares Core U.S. Aggregate Bond ETF had net inflows of $11.44B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-08 | $1.16B |
| 2026-07 | $543.11M |
| 2026-06 | $2.50B |
| 2026-05 | $1.13B |
| 2026-04 | −$3.02B |
| 2026-03 | $1.16B |
AGG Debt Constituents
Largest debt holdings of iShares Core U.S. Aggregate Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 0.41% |
| United States Treasury | 0.40% |
| United States Treasury | 0.40% |
| United States Treasury | 0.40% |
| United States Treasury | 0.39% |
| United States Treasury | 0.39% |
| United States Treasury | 0.39% |
| United States Treasury | 0.38% |
| United States Treasury | 0.38% |
| United States Treasury | 0.38% |
AGG Prospectus and SEC Filings
Official iShares Core U.S. Aggregate Bond ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-06-18
- Prospectus (485BPOS) — filed 2025-06-20
- Prospectus (485BPOS) — filed 2024-06-26
- Portfolio holdings (N-PORT) — filed 2026-10-23
- Portfolio holdings (N-PORT) — filed 2026-07-24
- Portfolio holdings (N-PORT) — filed 2026-04-23
- Annual census (N-CEN) — filed 2026-05-14
- Annual census (N-CEN) — filed 2025-05-14
AGG Service Providers
Firms that manage, distribute, hold, administer and audit iShares Core U.S. Aggregate Bond ETF, as reported on SEC Form N-CEN, fiscal year ending February 28, 2026.
- Adviser: BlackRock Fund Advisors
- Distributor: BlackRock Investments, LLC
- Custodian: State Street Bank and Trust Company
- Transfer agent: State Street Bank and Trust Company
- Administrator: State Street Bank and Trust Company
- Auditor: PricewaterhouseCoopers LLP
- Securities lending agent: BlackRock Institutional Trust Company, National Association
Related Funds
Other Intermediate Core Bond funds tracked on ABC INVEST:
AGG: Frequently Asked Questions
What is the expense ratio of iShares Core U.S. Aggregate Bond ETF (AGG)?
AGG has a net expense ratio of 0.03%, about $3 a year for every $10,000 invested. AGG fees and costs
What index does AGG track?
AGG is an index fund that tracks the Bloomberg US Aggregate Bond Index.
What are AGG's top holdings?
As of August 31, 2026, AGG held 13,385 positions. The largest are Blackrock Cash Funds (3.01%), BlackRock Funds III (0.52%), United States Treasury (0.41%), United States Treasury (0.40%) and United States Treasury (0.40%). All AGG holdings
Can I download the full list of AGG holdings?
Yes. The complete AGG holdings list as of August 31, 2026 can be downloaded as a CSV file from the Holdings page: holding, ticker, FIGI, sector, country, asset type, shares, value and share of net assets, from the fund's SEC N-PORT filing. Download AGG holdings (CSV)
How has iShares Core U.S. Aggregate Bond ETF performed?
AGG returned +1.9% over the 12 months to August 2026, +4.1% a year over 3 years and −0.3% a year over 5 years. AGG performance and risk
How large is AGG?
AGG manages $138.32B (SEC N-PORT, August 2026). Investors added a net $11.44B over the past 12 months.
Who manages AGG and when did it launch?
AGG is managed by BlackRock Fund Advisors. It is a series of iSHARES TRUST. It has traded on NYSE Arca since September 22, 2003.
How does AGG compare with similar Intermediate Core Bond funds?
Among 260 Intermediate Core Bond funds with $100M+ in assets, AGG ranks #18 of 259 on net expense ratio (0.03%) and #3 of 260 by assets. The largest is Vanguard Total Bond Market Index Fund (BND). Compare AGG with BND
Where can I find AGG's prospectus and SEC filings?
AGG's latest prospectus (485BPOS) was filed June 18, 2026 and its latest N-PORT holdings report was filed October 23, 2026. All 58 filings are linked on ABC INVEST and on SEC EDGAR (series S000004362). AGG SEC filings
What is the CUSIP and ISIN of AGG?
iShares Core U.S. Aggregate Bond ETF (AGG) has CUSIP 464287226 and ISIN US4642872265. Brokers and trading platforms use these codes to look up the fund.
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, and annual data from Form N-CEN.
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.