Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
MBB vs VCIT: how they differ
MBB and VCIT hold 0% of their weight in the same names, and MBB returned more over the year.
iShares MBS ETF and Vanguard Intermediate-Term Corporate Bond Index Fund.
What they hold in common
By the books each fund has filed, MBB and VCIT hold 0% of their money in the same securities at the same weight.
| Only in MBB | Only in VCIT |
|---|---|
| BLACKROCK CASH CL INST SL AGENCY 7.26% | Amazon.com Inc 0.31% |
| GNMA2 SF 30YR 0.09% | Boeing Co/The 0.28% |
| GNMA II 30YR SF - JUMBO-CONFORMING 0.08% | Meta Platforms Inc 0.28% |
| GNMA2 SINGLE FAMILY 30YR 0.04% | Bank of America Corp 0.27% |
| GNMA II 30YR 0.03% | Oracle Corp 0.27% |
| GNMA2 30YR TBA(REG C) 0.03% | Pfizer Investment Enterprises Pte Ltd 0.27% |
| UMBS 15YR TBA(REG B) 0.03% | Anheuser-Busch Cos LLC / Anheuser-Busch 0.27% |
| FNMA 30YR UMBS MEGA REMIC SUPER 0.02% | JPMorgan Chase & Co 0.25% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026 and Sep 10, 2026.
| MBB iShares MBS ETF | VCIT Vanguard Intermediate-Term Corporate Bond Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Mbs | Intermediate-Term Corporate Bond |
| Total return, 1 year | −0.1% | −1.2% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.6 pts | −18.7 pts |
| Expense ratio | 0.04% | 0.03% |
| Holdings | 2599 | 2302 |
MBB in plain words
MBB is a bond fund tracking the Mbs. Over the year to Sep 11, 2026 it returned −0.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year. It sat 3.3% below its high of Feb 27, 2026 on Sep 11, 2026.
VCIT in plain words
VCIT is a bond fund tracking the Intermediate-Term Corporate Bond. Over the year to Sep 11, 2026 it returned −1.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. It sat 3.4% below its high of Feb 27, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, MBB or VCIT?
- In the year to Sep 13, 2026, with distributions reinvested, MBB returned −0.1% and VCIT returned −1.2%, so MBB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MBB or VCIT?
- MBB charges 0.04% a year and VCIT charges 0.03%, so VCIT is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where to next
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, MBB against VCIT, data as of Sep 13, 2026. https://etfiq.com/compare/any/mbb-vs-vcit Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources