ISTB vs VCIT: Holdings Overlap
ISTBiShares Core 1-5 Year USD Bond ETF
iShares · 7059 holdings · $5.1B · as of 2026-04-30
VCITVanguard Intermediate-term Corporate Bond Index Fund
Vanguard · 2302 holdings · $67.6B · as of 2026-05-31
Holdings snapshots are 31 days apart (ISTB: 2026-04-30, VCIT: 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 ISTB and VCIT?
iShares Core 1-5 Year USD Bond ETF (ISTB, by iShares) holds 7059 positions; Vanguard Intermediate-term Corporate Bond Index Fund (VCIT, by Vanguard) holds 2302. They have 38 holdings in common, and by portfolio weight the two funds are 0.1% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 38ISTB holds 7059 · VCIT holds 2302
- Weight in Shared Holdings
- ISTB 0%·VCIT 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 ISTB
7021 of 7059 positions (98.3% of the fund) are not held by VCIT. Showing the top 30 by weight.
- U.S. Treasury Notes0.99%
- U.S. Treasury Notes0.98%
- U.S. Treasury Notes0.96%
- U.S. Treasury Notes0.91%
- U.S. Treasury Notes0.89%
- U.S. Treasury Notes0.86%
Only in VCIT
2264 of 2302 positions (98.5% of the fund) are not held by ISTB. Showing the top 30 by weight.
- Amazon.com, Inc.0.30%
- Boeing Co. (The)0.28%
- Meta Platforms, Inc.0.27%
- Bank of America Corp.0.27%
- Pfizer Investment Enterprises Pte. Ltd.0.27%
- Oracle Corp.0.27%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| ISTB | +0.3% | +1.0% | +3.0% | +5.0% | +1.9% | +2.3% | 4.27% |
| VCIT | -0.2% | -0.0% | +2.8% | +6.0% | +0.9% | +2.7% | 4.87% |
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 ISTB vs VCIT →
Shared Holdings(38)
The top 10 shared positions account for 94% of the overlap, led by Dominion Energy, Inc., Quanta Services, Inc. and Delta Air Lines, Inc..
| Dominion Energy, Inc. | 0.01% | 0.02% | 0.01% |
|---|---|---|---|
| Quanta Services, Inc. | 0.01% | 0.01% | 0.01% |
| Delta Air Lines, Inc. | 0.01% | 0.01% | 0.01% |
| CVS Health Corp. | 0.01% | 0.07% | 0.01% |
| PepsiCo, Inc. | 0.01% | 0.02% | 0.01% |
| Ameren Corp. | 0.01% | 0.02% | 0.01% |
| Intel Corp. | 0.01% | 0.00% | 0.00% |
| FedEx Corp. | 0.00% | 0.03% | 0.00% |
| American Electric Power Co., Inc., Series C | 0.01% | 0.00% | 0.00% |
| AEP Texas, Inc., Series I | 0.00% | 0.02% | 0.00% |
| Prologis LP | 0.00% | 0.01% | 0.00% |
| Goldman Sachs Private Credit Corp. | 0.00% | 0.03% | 0.00% |
| O'Reilly Automotive, Inc. | 0.00% | 0.00% | 0.00% |
| CenterPoint Energy Resources Corp. | 0.00% | 0.01% | 0.00% |
| Lennar Corp. | 0.00% | 0.00% | 0.00% |
| Merck & Co., Inc. | 0.00% | 0.04% | 0.00% |
| National Rural Utilities Cooperative Finance Corp. | 0.00% | 0.02% | 0.00% |
| Yale University, Series 2020 | 0.00% | 0.02% | 0.00% |
| PepsiCo, Inc. | 0.00% | 0.01% | 0.00% |
| Alexandria Real Estate Equities, Inc. | 0.01% | 0.00% | 0.00% |
| Alexandria Real Estate Equities, Inc. | 0.00% | 0.00% | 0.00% |
| Elevance Health, Inc. | 0.01% | 0.00% | 0.00% |
| Elevance Health, Inc. | 0.01% | 0.00% | 0.00% |
| Assurant, Inc. | 0.00% | 0.00% | 0.00% |
| Bank of America Corp. | 0.04% | 0.00% | 0.00% |
Frequently Asked Questions
How much do ISTB and VCIT overlap?
ISTB and VCIT overlap by 0.1% of portfolio weight. They share 38 holdings (ISTB holds 7059 positions and VCIT holds 2302), based on each fund's latest SEC-reported holdings.
Is it redundant to own both ISTB and VCIT?
The two portfolios are 0.1% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of ISTB and VCIT?
The largest positions held by both funds are Dominion Energy, Inc., Quanta Services, Inc., Delta Air Lines, Inc., CVS Health Corp. and PepsiCo, Inc.. Together the top 10 shared positions account for 94% of the total overlap.
What does ISTB own that VCIT doesn't?
7021 positions (98.3% of ISTB) are unique to ISTB, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 2264 positions (98.5% of VCIT) are unique to VCIT.