AGG vs BIV: Holdings Overlap
AGGiShares Core U.S. Aggregate Bond ETF
iShares · 13266 holdings · $137.7B · as of 2026-05-31
BIVVanguard Intermediate-term Bond Index Fund
Vanguard · 2340 holdings · $28.9B · as of 2026-03-31
Holdings snapshots are 61 days apart (AGG: 2026-05-31, BIV: 2026-03-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are AGG and BIV?
iShares Core U.S. Aggregate Bond ETF (AGG, by iShares) holds 13266 positions; Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340. They have 2297 holdings in common, and by portfolio weight the two funds are 18.0% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 18.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 2297AGG holds 13266 · BIV holds 2340
- Weight in Shared Holdings
- AGG 18%·BIV 98%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in AGG
10969 of 13266 positions (80.0% of the fund) are not held by BIV. Showing the top 30 by weight.
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.35%
- U.S. Treasury Notes0.33%
- U.S. Treasury Notes0.31%
- U.S. Treasury Notes0.31%
- U.S. Treasury Notes0.30%
Only in BIV
43 of 2340 positions (0.5% of the fund) are not held by AGG. Showing the top 30 by weight.
- Corp Andina de Fomento0.04%
- Israel Government International Bond0.03%
- Federal Home Loan Bank Bonds0.03%
- Micron Technology Inc0.03%
- Blackrock Inc0.02%
- BlackRock Funding Inc0.02%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| AGG | -0.3% | +0.0% | +2.4% | +4.2% | -0.2% | +1.4% | 4.04% |
| BIV | -0.2% | -0.3% | +2.0% | +4.6% | -0.1% | +1.7% | 4.31% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in AGG vs BIV →
Shared Holdings(2297)
The top 10 shared positions account for 22% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 0.42% | 2.06% | 0.42% |
|---|---|---|---|
| U.S. Treasury Notes | 0.41% | 2.03% | 0.41% |
| U.S. Treasury Notes | 0.40% | 2.06% | 0.40% |
| U.S. Treasury Notes | 0.40% | 2.19% | 0.40% |
| U.S. Treasury Notes | 0.39% | 2.02% | 0.39% |
| U.S. Treasury Notes | 0.39% | 1.99% | 0.39% |
| U.S. Treasury Notes | 0.39% | 2.29% | 0.39% |
| U.S. Treasury Notes | 0.39% | 1.95% | 0.39% |
| U.S. Treasury Notes | 0.38% | 2.18% | 0.38% |
| U.S. Treasury Notes | 0.37% | 0.92% | 0.37% |
| U.S. Treasury Notes | 0.35% | 1.88% | 0.35% |
| U.S. Treasury Notes | 0.33% | 1.64% | 0.33% |
| U.S. Treasury Notes | 0.33% | 1.67% | 0.33% |
| U.S. Treasury Notes | 0.32% | 1.75% | 0.32% |
| U.S. Treasury Notes | 0.31% | 0.71% | 0.31% |
| U.S. Treasury Notes | 0.31% | 1.72% | 0.31% |
| U.S. Treasury Notes | 0.29% | 1.61% | 0.29% |
| U.S. Treasury Notes | 0.29% | 1.68% | 0.29% |
| U.S. Treasury Notes | 0.27% | 2.20% | 0.27% |
| U.S. Treasury Notes | 0.27% | 1.55% | 0.27% |
| U.S. Treasury Notes | 0.24% | 1.77% | 0.24% |
| U.S. Treasury Notes | 0.30% | 0.20% | 0.20% |
| U.S. Treasury Notes | 0.17% | 1.02% | 0.17% |
| U.S. Treasury Notes | 0.17% | 0.73% | 0.17% |
| U.S. Treasury Notes | 0.17% | 0.68% | 0.17% |
Showing the top 250 of 2297 shared holdings by overlap weight.
Frequently Asked Questions
How much do AGG and BIV overlap?
AGG and BIV overlap by 18.0% of portfolio weight. They share 2297 holdings (AGG holds 13266 positions and BIV holds 2340), based on each fund's latest SEC-reported holdings.
Is it redundant to own both AGG and BIV?
The two portfolios are 18.0% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of AGG and BIV?
The largest positions held by both funds are U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. Together the top 10 shared positions account for 22% of the total overlap.
What does AGG own that BIV doesn't?
10969 positions (80.0% of AGG) are unique to AGG, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 43 positions (0.5% of BIV) are unique to BIV.