iShares Core U.S. Aggregate Bond ETF
Portfolio Exposure & Concentration
Look-through constituent allocation & index mechanics (S47B)
Securities in fund basket
Combined weight of largest 10
United States Treasury Note 4.5% 2034
Active industry exposures
Top 25 Holdings — AGG (S47B-01)
Statutory Form N-PORT authenticated portfolio weights with direct equity research bridge (S47B-04)
| # | Company / Security | Portfolio Weight | Equity Research |
|---|---|---|---|
| 1 | US-T-4.50-34United States Treasury Note 4.5% 2034 | 1.50% | Stock Dossier |
| 2 | US-T-4.12-29United States Treasury Note 4.125% 2029 | 1.40% | Stock Dossier |
| 3 | US-T-3.87-33United States Treasury Note 3.875% 2033 | 1.30% | Stock Dossier |
| 4 | US-T-4.00-29United States Treasury Note 4.0% 2029 | 1.20% | Stock Dossier |
| 5 | US-T-4.25-31United States Treasury Note 4.25% 2031 | 1.10% | Stock Dossier |
| 6 | FNMA-5.50-54Federal National Mortgage Assn 5.5% 2054 | 0.90% | Stock Dossier |
| 7 | FHLMC-5.00-53Federal Home Loan Mortgage Corp 5.0% 2053 | 0.80% | Stock Dossier |
| 8 | FNMA-6.00-54Federal National Mortgage Assn 6.0% 2054 | 0.80% | Stock Dossier |
| 9 | US-T-4.75-53United States Treasury Bond 4.75% 2053 | 0.70% | Stock Dossier |
| 10 | GNMA-5.50-54Government National Mortgage Assn 5.5% 2054 | 0.60% | Stock Dossier |
GICS 11-Sector Allocation (S47B-02)
Industry diversification across standard economic classifications
Portfolio Breakdown & Allocation Matrix
Multi-dimensional constituent classification sourced from SEC Form N-PORT and Issuer Fact Sheets (S48-Phase 2)
Sub-sector clusters reflect concentrated industry exposures beyond broad GICS sectors.
Market Cap Tier Breakdown (S47B-05)
Weighted capital size distribution of fund holdings
Look-Through Concentration Engine (S47B-03)
Calculates aggregate effective single-stock exposure across direct holdings & pooled ETFs
// Mathematical SSOT Formulation:
W_i = w_{direct, i} + ∑_f (a_f × w_{f,i})
Real-World Institutional Use-Case:
An investor holding 5% direct AAPL equity, plus 40% in VOO and 20% in QQQ, actually bears:
Vantage Portfolios look-through alerts eliminate hidden tech over-concentration and unintended double-exposure across multi-asset portfolios.