Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
MBB vs SCHB: how they differ
MBB and SCHB hold 0% of their weight in the same names, and SCHB returned more over the year.
iShares MBS ETF and Schwab U.S. Broad Market ETF.
What they hold in common
By the books each fund has filed, MBB and SCHB hold 0% of their money in the same securities at the same weight.
| Only in MBB | Only in SCHB |
|---|---|
| BLACKROCK CASH CL INST SL AGENCY 7.26% | NVIDIA Corp. 6.64% |
| GNMA2 SF 30YR 0.09% | Apple, Inc. 5.82% |
| GNMA II 30YR SF - JUMBO-CONFORMING 0.08% | Microsoft Corp. 3.80% |
| GNMA2 SINGLE FAMILY 30YR 0.04% | Amazon.com, Inc. 3.20% |
| GNMA II 30YR 0.03% | Alphabet, Inc. 2.87% |
| GNMA2 30YR TBA(REG C) 0.03% | Broadcom, Inc. 2.45% |
| UMBS 15YR TBA(REG B) 0.03% | Alphabet, Inc. 2.29% |
| FNMA 30YR UMBS MEGA REMIC SUPER 0.02% | Micron Technology, Inc. 1.78% |
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 Jun 30, 2026 and Sep 10, 2026.
| MBB iShares MBS ETF | SCHB Schwab U.S. Broad Market ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Schwab |
| What it is | Mbs | US broad market |
| Total return, 1 year | −0.1% | +17.2% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.6 pts | −0.3 pts |
| Expense ratio | 0.04% | not published |
| Holdings | 2599 | 2497 |
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.
SCHB in plain words
SCHB is an index equity fund tracking the US broad market. Over the year to Sep 11, 2026 it returned +17.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. By its holdings filed for Jun 30, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 2497 positions, with the top ten at 32.2%.
Questions people ask
- Which returned more over the last year, MBB or SCHB?
- In the year to Sep 13, 2026, with distributions reinvested, MBB returned −0.1% and SCHB returned +17.2%, so SCHB returned more. One year is one year; the longer windows are in the table.
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 SCHB, data as of Sep 13, 2026. https://etfiq.com/compare/any/mbb-vs-schb Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources