IEF vs BIV: Holdings Overlap
IEFiShares 7-10 Year Treasury Bond ETF
iShares · 15 holdings · $47.3B · 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 (IEF: 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 IEF and BIV?
iShares 7-10 Year Treasury Bond ETF (IEF, by iShares) holds 15 positions; Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340. 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
- 14IEF holds 15 · BIV holds 2340
- Weight in Shared Holdings
- IEF 97%·BIV 26%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 IEF
1 of 15 positions (1.5% of the fund) are not held by BIV.
- U.S. Treasury Notes1.47%
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%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IEF | -0.2% | -0.9% | +1.3% | +3.1% | -1.6% | +0.5% | 3.95% |
| 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 IEF vs BIV →
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 | 8.78% | 2.29% | 2.29% |
|---|---|---|---|
| U.S. Treasury Notes | 8.73% | 2.19% | 2.19% |
| U.S. Treasury Notes | 8.31% | 2.18% | 2.18% |
| U.S. Treasury Notes | 8.75% | 2.06% | 2.06% |
| U.S. Treasury Notes | 6.73% | 2.06% | 2.06% |
| U.S. Treasury Notes | 8.63% | 2.03% | 2.03% |
| U.S. Treasury Notes | 8.22% | 2.02% | 2.02% |
| U.S. Treasury Notes | 8.71% | 1.99% | 1.99% |
| U.S. Treasury Notes | 8.53% | 1.95% | 1.95% |
| U.S. Treasury Notes | 5.81% | 1.88% | 1.88% |
| U.S. Treasury Notes | 5.32% | 1.67% | 1.67% |
| U.S. Treasury Notes | 9.54% | 0.92% | 0.92% |
| U.S. Treasury Notes | 0.38% | 1.40% | 0.38% |
| U.S. Treasury Notes | 0.30% | 1.72% | 0.30% |
Frequently Asked Questions
How much do IEF and BIV overlap?
IEF and BIV overlap by 23.9% of portfolio weight. They share 14 holdings (IEF holds 15 positions and BIV holds 2340), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IEF and BIV?
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 IEF 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 86% of the total overlap.
What does IEF own that BIV doesn't?
1 positions (1.5% of IEF) are unique to IEF, led by U.S. Treasury Notes. In the other direction, 2326 positions (72.5% of BIV) are unique to BIV.