BIV vs MUB: Holdings Overlap
BIVVanguard Intermediate-term Bond Index Fund
Vanguard · 2340 holdings · $28.9B · as of 2026-03-31
MUBiShares National Muni Bond ETF
iShares · 6603 holdings · $45.3B · as of 2026-05-31
Holdings snapshots are 61 days apart (BIV: 2026-03-31, MUB: 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 MUB?
Vanguard Intermediate-term Bond Index Fund (BIV, by Vanguard) holds 2340 positions; iShares National Muni Bond ETF (MUB, by iShares) holds 6603. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0BIV holds 2340 · MUB holds 6603
- Weight in Shared Holdings
- BIV 0%·MUB 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 BIV
2340 of 2340 positions (98.8% of the fund) are not held by MUB. 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%
Only in MUB
6603 of 6603 positions (95.6% of the fund) are not held by BIV. Showing the top 30 by weight.
- Board of Regents of the University of Texas System, Series 2025B0.19%
- New York State Thruway Authority, Series 2022A0.15%
- New York State Dormitory Authority, Series 2019D0.13%
- Ohio State University (The), Series 2026A0.13%
- Houston Higher Education Finance Corp., Series 20240.13%
- Northwest Independent School District, Series 20250.13%
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% |
| MUB | -0.9% | +0.8% | +5.1% | +3.3% | +0.7% | +1.9% | 3.22% |
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 MUB →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do BIV and MUB overlap?
BIV and MUB overlap by 0.0% of portfolio weight. They share 0 holdings (BIV holds 2340 positions and MUB holds 6603), based on each fund's latest SEC-reported holdings.
Is it redundant to own both BIV and MUB?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does BIV own that MUB doesn't?
2340 positions (98.8% 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, 6603 positions (95.6% of MUB) are unique to MUB.