IUSB vs VCSH: Holdings Overlap
IUSBiShares Core Universal USD Bond ETF
iShares · 17783 holdings · $43.2B · as of 2026-04-30
VCSHVanguard Short-term Corporate Bond Index Fund
Vanguard · 3000 holdings · $45.0B · as of 2026-05-31
Holdings snapshots are 31 days apart (IUSB: 2026-04-30, VCSH: 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 IUSB and VCSH?
iShares Core Universal USD Bond ETF (IUSB, by iShares) holds 17783 positions; Vanguard Short-term Corporate Bond Index Fund (VCSH, by Vanguard) holds 3000. They have 2905 holdings in common, and by portfolio weight the two funds are 7.5% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 7.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 2905IUSB holds 17783 · VCSH holds 3000
- Weight in Shared Holdings
- IUSB 8%·VCSH 95%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 IUSB
14878 of 17783 positions (90.6% of the fund) are not held by VCSH. Showing the top 30 by weight.
- U.S. Treasury Notes0.37%
- U.S. Treasury Notes0.37%
- U.S. Treasury Notes0.37%
- U.S. Treasury Notes0.37%
- U.S. Treasury Notes0.36%
- U.S. Treasury Notes0.36%
Only in VCSH
95 of 3000 positions (2.8% of the fund) are not held by IUSB. Showing the top 30 by weight.
- US TREASURY N/B0.83%
- Meta Platforms Inc0.09%
- HSBC HOLDINGS0.06%
- Commonwealth Bank of Australia0.05%
- WESTPAC BANKING0.05%
- Diageo Investment Corp0.05%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IUSB | -0.2% | +0.3% | +2.8% | +4.7% | +0.2% | +1.8% | 4.28% |
| VCSH | +0.3% | +1.2% | +3.4% | +5.5% | +2.4% | +2.7% | 4.46% |
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 IUSB vs VCSH →
Shared Holdings(2905)
The top 10 shared positions account for 2% of the overlap, led by Bank of America Corp., Goldman Sachs Group, Inc. (The) and T-Mobile USA, Inc..
| Bank of America Corp. | 0.02% | 0.23% | 0.02% |
|---|---|---|---|
| Goldman Sachs Group, Inc. (The) | 0.02% | 0.03% | 0.02% |
| T-Mobile USA, Inc. | 0.02% | 0.19% | 0.02% |
| Goldman Sachs Group, Inc. (The) | 0.02% | 0.13% | 0.02% |
| AbbVie, Inc. | 0.01% | 0.21% | 0.01% |
| CVS Health Corp. | 0.01% | 0.20% | 0.01% |
| WELLS FARGO and CO NEW 5.15%/VAR 04/23/2031 | 0.01% | 0.11% | 0.01% |
| WELLS FARGO and CO NEW 5.574%/VAR 07/25/2029 | 0.01% | 0.18% | 0.01% |
| Bank of America Corp. | 0.01% | 0.16% | 0.01% |
| Goldman Sachs Group, Inc. (The) | 0.01% | 0.09% | 0.01% |
| Bank of America Corp. | 0.01% | 0.16% | 0.01% |
| Morgan Stanley | 0.01% | 0.14% | 0.01% |
| Boeing Co. (The) | 0.01% | 0.19% | 0.01% |
| Morgan Stanley | 0.01% | 0.13% | 0.01% |
| Verizon Communications, Inc. | 0.01% | 0.14% | 0.01% |
| Morgan Stanley | 0.01% | 0.07% | 0.01% |
| Deutsche Telekom International Finance BV | 0.01% | 0.14% | 0.01% |
| JPMorgan Chase & Co. | 0.01% | 0.10% | 0.01% |
| Pfizer Investment Enterprises Pte. Ltd. | 0.01% | 0.17% | 0.01% |
| Citigroup, Inc. | 0.01% | 0.15% | 0.01% |
| Bank of America Corp. | 0.01% | 0.14% | 0.01% |
| AerCap Ireland Capital DAC / AerCap Global Aviation Trust | 0.01% | 0.16% | 0.01% |
| JPMORGAN CHASE and CO 2.739%/VAR 10/15/2030 | 0.01% | 0.14% | 0.01% |
| Bank of America Corp. | 0.01% | 0.11% | 0.01% |
| Bank of America Corp. | 0.01% | 0.11% | 0.01% |
Showing the top 250 of 2905 shared holdings by overlap weight.
Frequently Asked Questions
How much do IUSB and VCSH overlap?
IUSB and VCSH overlap by 7.5% of portfolio weight. They share 2905 holdings (IUSB holds 17783 positions and VCSH holds 3000), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IUSB and VCSH?
The two portfolios are 7.5% 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 IUSB and VCSH?
The largest positions held by both funds are Bank of America Corp., Goldman Sachs Group, Inc. (The), T-Mobile USA, Inc., Goldman Sachs Group, Inc. (The) and AbbVie, Inc.. Together the top 10 shared positions account for 2% of the total overlap.
What does IUSB own that VCSH doesn't?
14878 positions (90.6% of IUSB) are unique to IUSB, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 95 positions (2.8% of VCSH) are unique to VCSH.