iShares Core U.S. Aggregate Bond
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The iShares Core U.S. Aggregate Bond ETF (the “Fund”) seeks to track the investment results of an index composed of the total U.S. investment-grade bond market.
Investment Strategy
The Fund seeks to track the investment results of the Bloomberg U.S. Aggregate Bond Index (the “Underlying Index”), which measures the performance of the total U.S. investment-grade (as determined by Bloomberg Index Services Limited (the “Index Provider” or “Bloomberg”)) bond market. As of February 28, 2026, there were 13,972 issues in the Underlying Index.
Fees & Expenses
| Net Expense Ratio | 0.03% |
| Management Fee | 0.03% |
| Portfolio Turnover | 62% |
Reported Performance
Average annual returns as reported in the fund's most recent prospectus. Past performance does not guarantee future results.
| 1-Year Return | 7.19% |
| 5-Year Avg Annual | 0.38% |
| 10-Year Avg Annual | 1.97% |
Holdings
Top 10 holdings
| Name | Ticker | Weight | Value |
|---|---|---|---|
| BlackRock Cash Funds: Treasury, SL Agency Shares | 2.78% | $3,791,519,238 | |
| BlackRock Cash Funds: Treasury, SL Agency Shares | 0.62% | $845,277,226 | |
| U.S. Treasury Notes | 0.42% | $573,096,185 | |
| U.S. Treasury Notes | 0.41% | $563,669,972 | |
| U.S. Treasury Notes | 0.41% | $557,755,976 | |
| U.S. Treasury Notes | 0.40% | $550,258,188 | |
| U.S. Treasury Notes | 0.40% | $544,937,186 | |
| U.S. Treasury Notes | 0.39% | $535,038,826 | |
| U.S. Treasury Notes | 0.39% | $533,317,005 | |
| U.S. Treasury Notes | 0.39% | $526,987,413 |
Country
| Country | Weight |
|---|---|
| United States | 96.2% |
| Other / Supranational | 1.0% |
| Canada | 1.0% |
| United Kingdom | 0.8% |
| Japan | 0.5% |
| Mexico | 0.3% |
| Germany | 0.2% |
| Australia | 0.2% |
| Netherlands | 0.2% |
| Ireland | 0.1% |
| Philippines | 0.1% |
| Spain | 0.1% |
| Indonesia | 0.1% |
| Singapore | 0.1% |
| Chile | 0.1% |
| Other | 0.9% |
| Total | 101.9% |
Region
| Region | Weight |
|---|---|
| Americas | 97.8% |
| Europe | 1.8% |
| Asia-Pacific | 1.1% |
| Other | 1.0% |
| Middle East & Africa | 0.1% |
| Total | 101.9% |
Market classification
| Market | Weight |
|---|---|
| Developed | 99.6% |
| Other | 1.3% |
| Emerging | 0.9% |
| Total | 101.9% |
Asset class
| Class | Weight |
|---|---|
| Debt | 73.4% |
| ABS-mortgage-backed | 24.7% |
| Short-term investment | 3.4% |
| ABS-other | 0.3% |
| Total | 101.9% |
Issuer type
| Type | Weight |
|---|---|
| US Treasury | 45.7% |
| Corporate | 25.0% |
| US Govt Sponsored Enterprise | 18.6% |
| US Govt Agency | 5.6% |
| Registered fund | 3.4% |
| NUSS | 2.3% |
| Municipal | 0.4% |
| Unknown | 0.8% |
| Total | 101.9% |
Maturity
| Maturity | Weight |
|---|---|
| Under 1 year | 1.1% |
| 1-3 years | 20.4% |
| 3-5 years | 16.9% |
| 5-10 years | 18.3% |
| Over 10 years | 41.8% |
| No expiry | 3.4% |
| Total | 101.9% |