iShares Core U.S. Aggregate Bond ETF(AGG)
AI Look-Through Summary
AI GeneratedThe iShares Core U.S. Aggregate Bond ETF maintains a substantial asset base of approximately $138.7 billion, reflecting its role as a broad market proxy for the fixed-income sector. Analysis of the top ten holdings reveals that no single security exceeds 0.5% of the portfolio's total value, with the largest constituent holding at just 3.2%. This extreme concentration dilution across the leading positions indicates a highly diversified structure designed to mitigate idiosyncratic risk associated with individual issuers or specific bond maturities. The uniformity in weightings among the top ten names suggests that the fund's construction prioritizes breadth over exposure to any particular high-yield entity, effectively smoothing out volatility inherent in single-name performance.
Geographically and sectorially, while specific country allocations are not detailed in the provided data snapshot, the nature of these holdings—identified by standard CUSIP prefixes typical of U.S.-domiciled government and agency securities—implies a heavy tilt toward domestic obligations rather than international equities or foreign sovereign debt. The quantitative profile underscores a passive indexing strategy where capital is distributed across thousands of underlying instruments to mirror the performance of the aggregate U.S. bond market. By avoiding significant weightings in any single security, the fund aims to capture the overall yield curve movements and credit spread dynamics of the broader asset class rather than betting on specific issuers. This structural approach ensures that returns are driven primarily by macroeconomic factors such as interest rate shifts and inflation expectations rather than the operational success or failure of individual corporate borrowers or municipalities within the top tier of holdings.
Generated by Qwen-32B from constituent-level data. Not investment advice. Updated: 2026-05-22 06:22:15.539568+00
🔍 Theme Alignment Audit
AI GeneratedPurity: 95/100The investment theme implied by the name "U.S. Aggregate Bond" suggests a broad-based exposure to the entire spectrum of U.S. fixed income securities, and the provided data reflects this mandate with high fidelity. Unlike thematic equity funds that often struggle to maintain focus amidst market shifts or dilute their strategy with unrelated mega-cap stocks for stability, this fund's composition appears strictly adherent to its stated objective without obvious deviations into non-bond assets. The absence of specific company names in the top holdings list, replaced instead by generic identifiers common in bond ETFs, indicates that individual issuer selection is secondary to overall index replication rather than a strategy driven by stock-picking or thematic alignment with unrelated sectors.
Concentration risk appears minimal given the extremely low top-ten concentration ratio of 7.0%, which demonstrates a highly diversified portfolio where no single security exerts significant influence on performance. The sector coherence, while not explicitly detailed in the provided snippet, is logically consistent with an aggregate bond index that typically balances government treasuries, agency securities, and investment-grade corporate debt to mirror the broader market structure. This fund differentiates itself from a broad equity index by focusing exclusively on fixed income instruments rather than company ownership, yet its lack of active stock selection or sector tilts means it functions more as a passive benchmark for the bond market than a differentiated thematic strategy. The data suggests a vehicle designed purely for capital preservation and yield generation through diversification rather than seeking alpha via specific industry exposure.
AI analysis of holdings alignment vs fund theme. Not investment advice. Updated: 2026-05-23 01:26:42.617952+00
Flow Driver Analysis
2-Step CircleWhich larger ETFs share AGG's holdings — and mechanically drive its price through index rebalancing flows?
Approximately 34% of AGG's weight flows through these larger ETFs
| Driver ETF | AUM | Expense | Shared Stocks | Weight Overlap |
|---|---|---|---|---|
| SHYiShares 1-3 Year Treasury Bond ETF | $25B | — | 90 | 18.0% |
| LQDiShares iBoxx $ Investment Grade Corporate Bond ETF | $29B | — | 3088 | 15.7% |
18% of AGG's portfolio by weight is also held by SHY. When SHY receives inflows, it mechanically buys these shared stocks — dragging AGG's NAV along regardless of any thematic or sector catalyst. Combined, the top 2 overlapping ETFs control exposure to 34% ofAGG's weight.
Overlap computed from constituent-level holdings data across 2 ETFs. Price co-movement with driver ETFs is structural, not coincidental. Not investment advice.
ETF Look-Through Dashboard
Replaces $249/yr MorningstarPeer through the ETF wrapper to see exactly what you own. Every metric is computed from constituent-level data.
Herfindahl-Hirschman Concentration Index
Morningstar-Style Box
Under the Hood — Top 15 Constituents
| # | Ticker | Company | Weight | P/E | F-Score |
|---|---|---|---|---|---|
| 1 | 066922477 | BLACKROCK CASH FUNDS | 3.19% | — | — |
| 2 | 91282CPL9 | United States Treasury | 0.46% | — | — |
| 3 | 91282CPR6 | United States Treasury | 0.43% | — | — |
| 4 | 91282CMM0 | United States Treasury | 0.42% | — | — |
| 5 | 91282CKQ3 | United States Treasury | 0.42% | — | — |
| 6 | 91282CPJ4 | United States Treasury | 0.42% | — | — |
| 7 | 91282CJZ5 | United States Treasury | 0.41% | — | — |
| 8 | 91282CLW9 | United States Treasury | 0.41% | — | — |
| 9 | 91282CJJ1 | United States Treasury | 0.41% | — | — |
| 10 | 91282CGQ8 | United States Treasury | 0.40% | — | — |
| 11 | 91282CLF6 | United States Treasury | 0.40% | — | — |
| 12 | 91282CNC1 | United States Treasury | 0.39% | — | — |
| 13 | 91282CNT4 | United States Treasury | 0.39% | — | — |
| 14 | 91282CDJ7 | United States Treasury | 0.38% | — | — |
| 15 | 91282CGM7 | United States Treasury | 0.35% | — | — |
Historical Holdings Snapshots
Browse how AGG’s holdings have changed across SEC filing dates. Showing top holdings per snapshot.
2026-05-24
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
2026-05-23
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
2026-05-22
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
2026-05-21
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
2026-05-20
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
2026-05-19
15 holdings · 8.9% tracked weight| # | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|
| 1 | 066922477 | 3.19% | 4,507,603,571 | $4.5B |
| 2 | 91282CPL9 | 0.46% | — | $654.6M |
| 3 | 91282CPR6 | 0.43% | — | $603.6M |
| 4 | 91282CMM0 | 0.42% | — | $599.1M |
| 5 | 91282CKQ3 | 0.42% | — | $596.6M |
| 6 | 91282CPJ4 | 0.42% | — | $595.3M |
| 7 | 91282CJZ5 | 0.41% | — | $584.3M |
| 8 | 91282CLW9 | 0.41% | — | $584.2M |
| 9 | 91282CJJ1 | 0.41% | — | $572.8M |
| 10 | 91282CGQ8 | 0.40% | — | $570.7M |
| 11 | 91282CLF6 | 0.40% | — | $569.8M |
| 12 | 91282CNC1 | 0.39% | — | $554.9M |
| 13 | 91282CNT4 | 0.39% | — | $553.3M |
| 14 | 91282CDJ7 | 0.38% | — | $535.7M |
| 15 | 91282CGM7 | 0.35% | — | $494.7M |
Source: SEC filings and fund provider disclosures. Shows last 6 snapshot dates, top 15 holdings per date by weight.
Risk Profile
Sharpe = risk-adjusted return (higher is better). Computed from 1,200+ trading days with 5% risk-free rate.
Fama-French 5-Factor Exposure
Academic factor model decomposition — what's really driving this ETF's returns.
⚠ Low R² — the equity factor model explains very little of this ETF's return variance. Factor exposures and alpha should be interpreted with caution.
Fama-French 5-Factor Model. Data: Kenneth French Data Library. Regression over 3 years of daily returns.
Price Chart with Moving Averages
Technical Setup
AI GeneratedThe current trading price of $98.44 for the iShares Core U.S. Aggregate Bond ETF establishes a specific relationship with its long-term moving averages, though precise envelope boundaries are not explicitly defined in the available data points. Without knowing whether this level sits above or below the immediate 20-day and 50-day simple moving averages, it is difficult to definitively categorize the asset as being in an overbought or oversold state relative to its recent trajectory. In intermediate core bond markets, prices often oscillate within a defined range where deviations from central tendency typically invite mean-reversion forces; however, confirming whether $98.44 represents such an extreme deviation requires comparison against specific dynamic support and resistance levels derived from historical price action over the relevant timeframes. The positioning of this intermediate duration instrument suggests that market participants are monitoring valuation metrics relative to recent averages, yet the absence of explicit envelope data prevents a clear assessment of immediate mean-reversion probability. If the current level were significantly distant from the 20-day or 50-day moving average, it might indicate heightened potential for price correction toward equilibrium, whereas proximity to these lines could imply continued consolidation within an established channel. Ultimately, determining whether the asset is trading at a relative premium or discount necessitates calculating its exact distance from these key technical benchmarks, which remains undefined in the provided context but would be critical for assessing short-term volatility expectations and potential reversal patterns inherent to fixed-income equity proxies.
Underwater (Drawdown from Peak)
How far below the all-time high the price has been over time. Deeper = more pain for holders.
Rolling 60-Day Beta vs S&P 500 (VOO)
How the ETF's sensitivity to market moves changes over time. β > 1 = more volatile than the market.
Yield & Income
Sector Drift Over Time
How AGG’s sector allocation has shifted across snapshots. Use the slider to travel through time.
Active Conviction Tracker
Shares bought and sold between the latest two data snapshots — reveals what the fund manager is actually doing.
AUM & Capital Flow Tracker
Estimated assets under management derived from SEC filings and daily price movements — tracks how the fund's value evolves over time.
Estimated AUM derived from the latest SEC N-PORT filing TNA ($146.30B) scaled by daily price changes. Filing snapshots update when new regulatory filings are published (quarterly for most funds, daily for ARK).
AGG Rate Shock Simulator
What happens to iShares Core U.S. Aggregate Bond ETF if the Fed changes rates? This simulator estimates price impact based on the fund's effective duration of 5.8 years, computed from 90-day regression of AGG's returns against treasury yield changes.
| Rate Change | Price Impact | Est. Price | Visual |
|---|---|---|---|
| -2.00% | +11.5% | $110.10 | |
| -1.50% | +8.7% | $107.25 | |
| -1.00% | +5.8% | $104.41 | |
| -0.50% | +2.9% | $101.56 | |
| -0.25% | +1.4% | $100.13 | |
| +0.00%(current) | 0.0% | $98.71 | |
| +0.25% | -1.4% | $97.29 | |
| +0.50% | -2.9% | $95.86 | |
| +1.00% | -5.8% | $93.01 | |
| +1.50% | -8.7% | $90.17 | |
| +2.00% | -11.5% | $87.32 |
Price impact estimated using modified duration approximation: ΔPrice ≈ −Duration × ΔYield. Actual impact may differ due to convexity, credit spread changes, and market conditions. Duration computed from price-yield sensitivity analysis. Not investment advice.
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Quant metrics computed deterministically from financial statements and price data. Updated: 2026-06-02.
SecuritiesDB is for informational purposes only. Not investment advice.