AGZ vs BIV: Holdings Overlap
iShares · 98 holdings · $563M · 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 (AGZ: 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 AGZ and BIV?
iShares Agency Bond ETF (AGZ, by iShares) holds 98 positions; Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340. They have 8 holdings in common, and by portfolio weight the two funds are 0.4% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 8AGZ holds 98 · BIV holds 2340
- Weight in Shared Holdings
- AGZ 14%·BIV 0%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 AGZ
90 of 98 positions (80.0% of the fund) are not held by BIV. Showing the top 30 by weight.
- Federal National Mortgage Association13.29%
- Federal Home Loan Bank Bonds5.66%
- Federal Farm Credit Bank Bonds4.70%
- Federal National Mortgage Association3.68%
- Federal National Mortgage Association3.55%
- Federal Home Loan Bank Bonds3.51%
Only in BIV
2332 of 2340 positions (98.4% of the fund) are not held by AGZ. Showing the top 30 by weight.
- U.S. Treasury Notes2.29%
- U.S. Treasury Notes2.20%
- U.S. Treasury Notes2.19%
- U.S. Treasury Notes2.18%
- U.S. Treasury Notes2.06%
- U.S. Treasury Notes2.06%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| AGZ | +0.2% | +0.7% | +2.8% | +4.3% | +1.1% | +1.8% | 3.69% |
| 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 AGZ vs BIV →
Shared Holdings(8)
The top 8 shared positions account for 100% of the overlap, led by Federal National Mortgage Association, Federal National Mortgage Association and Federal Home Loan Mortgage Corp..
| Federal National Mortgage Association | 1.59% | 0.11% | 0.11% |
|---|---|---|---|
| Federal National Mortgage Association | 5.66% | 0.08% | 0.08% |
| Federal Home Loan Mortgage Corp. | 2.57% | 0.08% | 0.08% |
| Federal Home Loan Mortgage Corp. | 2.62% | 0.04% | 0.04% |
| Tennessee Valley Authority | 0.37% | 0.03% | 0.03% |
| Federal Home Loan Bank Bonds | 0.46% | 0.03% | 0.03% |
| Tennessee Valley Authority | 0.45% | 0.02% | 0.02% |
| Tennessee Valley Authority | 0.32% | 0.01% | 0.01% |
Frequently Asked Questions
How much do AGZ and BIV overlap?
AGZ and BIV overlap by 0.4% of portfolio weight. They share 8 holdings (AGZ holds 98 positions and BIV holds 2340), based on each fund's latest SEC-reported holdings.
Is it redundant to own both AGZ and BIV?
The two portfolios are 0.4% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of AGZ and BIV?
The largest positions held by both funds are Federal National Mortgage Association, Federal National Mortgage Association, Federal Home Loan Mortgage Corp., Federal Home Loan Mortgage Corp. and Tennessee Valley Authority. Together the top 8 shared positions account for 100% of the total overlap.
What does AGZ own that BIV doesn't?
90 positions (80.0% of AGZ) are unique to AGZ, led by Federal National Mortgage Association, Federal Home Loan Bank Bonds and Federal Farm Credit Bank Bonds. In the other direction, 2332 positions (98.4% of BIV) are unique to BIV.