BIV vs IEF: Holdings Overlap
BIVVanguard Intermediate-term Bond Index Fund
Vanguard · 2340 holdings · $28.9B · as of 2026-03-31
IEFiShares 7-10 Year Treasury Bond ETF
iShares · 15 holdings · $47.3B · as of 2026-05-31
Holdings snapshots are 61 days apart (BIV: 2026-03-31, IEF: 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 IEF?
Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340 positions; iShares 7-10 Year Treasury Bond ETF (IEF, by iShares) holds 15. They have 14 holdings in common, and by portfolio weight the two funds are 23.9% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 23.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 14BIV holds 2340 · IEF holds 15
- Weight in Shared Holdings
- BIV 26%·IEF 97%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
2326 of 2340 positions (72.5% of the fund) are not held by IEF. Showing the top 30 by weight.
- U.S. Treasury Notes2.20%
- U.S. Treasury Notes1.77%
- U.S. Treasury Notes1.75%
- U.S. Treasury Notes1.68%
- U.S. Treasury Notes1.64%
- U.S. Treasury Notes1.61%
Only in IEF
1 of 15 positions (1.5% of the fund) are not held by BIV.
- U.S. Treasury Notes1.47%
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% |
| IEF | -0.2% | -0.9% | +1.3% | +3.1% | -1.6% | +0.5% | 3.95% |
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 IEF →
Shared Holdings(14)
The top 10 shared positions account for 86% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 2.29% | 8.78% | 2.29% |
|---|---|---|---|
| U.S. Treasury Notes | 2.19% | 8.73% | 2.19% |
| U.S. Treasury Notes | 2.18% | 8.31% | 2.18% |
| U.S. Treasury Notes | 2.06% | 8.75% | 2.06% |
| U.S. Treasury Notes | 2.06% | 6.73% | 2.06% |
| U.S. Treasury Notes | 2.03% | 8.63% | 2.03% |
| U.S. Treasury Notes | 2.02% | 8.22% | 2.02% |
| U.S. Treasury Notes | 1.99% | 8.71% | 1.99% |
| U.S. Treasury Notes | 1.95% | 8.53% | 1.95% |
| U.S. Treasury Notes | 1.88% | 5.81% | 1.88% |
| U.S. Treasury Notes | 1.67% | 5.32% | 1.67% |
| U.S. Treasury Notes | 0.92% | 9.54% | 0.92% |
| U.S. Treasury Notes | 1.40% | 0.38% | 0.38% |
| U.S. Treasury Notes | 1.72% | 0.30% | 0.30% |
Frequently Asked Questions
How much do BIV and IEF overlap?
BIV and IEF overlap by 23.9% of portfolio weight. They share 14 holdings (BIV holds 2340 positions and IEF holds 15), based on each fund's latest SEC-reported holdings.
Is it redundant to own both BIV and IEF?
The two portfolios are 23.9% 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 BIV and IEF?
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 86% of the total overlap.
What does BIV own that IEF doesn't?
2326 positions (72.5% 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, 1 positions (1.5% of IEF) are unique to IEF.