BIV vs IEI: Holdings Overlap
BIVVanguard Intermediate-term Bond Index Fund
Vanguard · 2340 holdings · $28.9B · as of 2026-03-31
IEIiShares 3-7 Year Treasury Bond ETF
iShares · 83 holdings · $17.6B · as of 2026-05-31
Holdings snapshots are 61 days apart (BIV: 2026-03-31, IEI: 2026-05-31). 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 BIV and IEI?
Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340 positions; iShares 3-7 Year Treasury Bond ETF (IEI, by iShares) holds 83. They have 35 holdings in common, and by portfolio weight the two funds are 30.4% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 30.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 35BIV holds 2340 · IEI holds 83
- Weight in Shared Holdings
- BIV 33%·IEI 42%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 BIV
2305 of 2340 positions (65.6% of the fund) are not held by IEI. Showing the top 30 by weight.
- U.S. Treasury Notes2.29%
- U.S. Treasury Notes2.19%
- U.S. Treasury Notes2.18%
- U.S. Treasury Notes2.06%
- U.S. Treasury Notes2.06%
- U.S. Treasury Notes2.03%
Only in IEI
48 of 83 positions (56.9% of the fund) are not held by BIV. Showing the top 30 by weight.
- U.S. Treasury Notes2.90%
- U.S. Treasury Notes2.28%
- U.S. Treasury Notes2.23%
- U.S. Treasury Notes1.92%
- U.S. Treasury Notes1.82%
- U.S. Treasury Notes1.80%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| BIV | -0.2% | -0.3% | +2.0% | +4.6% | -0.1% | +1.7% | 4.31% |
| IEI | +0.1% | -0.2% | +1.6% | +3.9% | +0.2% | +1.2% | 3.70% |
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 BIV vs IEI →
Shared Holdings(35)
The top 10 shared positions account for 51% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 1.77% | 2.09% | 1.77% |
|---|---|---|---|
| U.S. Treasury Notes | 2.20% | 1.75% | 1.75% |
| U.S. Treasury Notes | 1.75% | 2.26% | 1.75% |
| U.S. Treasury Notes | 1.72% | 2.11% | 1.72% |
| U.S. Treasury Notes | 1.68% | 1.93% | 1.68% |
| U.S. Treasury Notes | 1.64% | 2.09% | 1.64% |
| U.S. Treasury Notes | 1.61% | 2.05% | 1.61% |
| U.S. Treasury Notes | 1.55% | 2.08% | 1.55% |
| U.S. Treasury Notes | 1.15% | 1.26% | 1.15% |
| U.S. Treasury Notes | 1.25% | 0.93% | 0.93% |
| U.S. Treasury Notes | 1.40% | 0.89% | 0.89% |
| U.S. Treasury Notes | 0.88% | 1.60% | 0.88% |
| U.S. Treasury Notes | 0.86% | 0.97% | 0.86% |
| U.S. Treasury Notes | 0.84% | 0.91% | 0.84% |
| U.S. Treasury Notes | 0.84% | 0.89% | 0.84% |
| U.S. Treasury Notes | 0.85% | 0.83% | 0.83% |
| U.S. Treasury Notes | 0.81% | 0.93% | 0.81% |
| U.S. Treasury Notes | 0.76% | 1.11% | 0.76% |
| U.S. Treasury Notes | 0.73% | 0.75% | 0.73% |
| U.S. Treasury Notes | 0.71% | 1.12% | 0.71% |
| U.S. Treasury Notes | 0.69% | 0.92% | 0.69% |
| U.S. Treasury Notes | 0.68% | 0.89% | 0.68% |
| U.S. Treasury Notes | 0.85% | 0.67% | 0.67% |
| U.S. Treasury Notes | 0.62% | 1.13% | 0.62% |
| U.S. Treasury Notes | 1.20% | 0.59% | 0.59% |
Frequently Asked Questions
How much do BIV and IEI overlap?
BIV and IEI overlap by 30.4% of portfolio weight. They share 35 holdings (BIV holds 2340 positions and IEI holds 83), based on each fund's latest SEC-reported holdings.
Is it redundant to own both BIV and IEI?
The two portfolios are 30.4% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of BIV and IEI?
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 51% of the total overlap.
What does BIV own that IEI doesn't?
2305 positions (65.6% of BIV) are unique to BIV, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 48 positions (56.9% of IEI) are unique to IEI.