iShares Core U.S. Aggregate Bond ETF
iShares·Tracks Bloomberg US Aggregate Bond Index·Inception Sep 22, 2003
Composite score
Based on a 0.030% expense ratio.
Based on $138.32B in net assets.
Top-10 holdings represent 6.6% of net assets.
US Aggregate Bond base · ETF wrapper · 4.12% TTM yield.
The composite is a weighted average of the four core sub-scores above (cost, tax efficiency, liquidity, concentration). Missing sub-scores fall back to the per-category median when the category has at least 50% data coverage, so funds without (e.g.) parsed N-PORT holdings aren't accidentally boosted by renormalization. Tracking quality is shown where computable but isn't currently part of the composite weighting. Seemethodologyfor formulas, thetracking-qualitypartial-coverage rationale, and the dimensions we deliberatelydon't score(methodology v0.5.1).
Use AGG in our tools
Tool · Look-through
See what AGG actually holds, in a portfolio
Add your other funds and weights; every underlying position is summed across the basket.
Tool · Cost
Compare AGG's fee against another fund
Compounds the 0.030% expense ratio against a peer over decades.
Tool · Overlap
Compare AGG's holdings with peers
Pairwise holdings heatmap, pre-loaded with similar US Aggregate Bond funds.
Tool · TLH
Find a tax-loss harvesting partner for AGG
Ranks every catalog fund by holdings overlap, flags wash-sale risk.
Tool · Placement
Where should this fund live across your accounts?
Asset-location optimizer — places each fund in taxable / tax-deferred / Roth.
Top holdings
| # | Holding | Weight |
|---|---|---|
| 1 | BLACKROCK CASH FUNDS | 2.78% |
| 2 | BlackRock Funds III | 0.62% |
| 3 | United States Treasury | 0.42% |
| 4 | United States Treasury | 0.41% |
| 5 | United States Treasury | 0.41% |
| 6 | United States Treasury | 0.40% |
| 7 | United States Treasury | 0.40% |
| 8 | United States Treasury | 0.39% |
| 9 | United States Treasury | 0.39% |
| 10 | United States Treasury | 0.39% |
Compare AGG with another fund
Or skim the closest-overlap funds below.
Similar ETFs by holdings overlap
Open AGG at a brokerage
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodologyand funding disclosure.