Data as of Oct 28, 2026.
MBB vs VBR: Differences, Returns & Fees
Over the year to Oct 28, 2026, MBB returned −0.8% to VBR's +17.6%; 0% of their weight is in the same names.
askIQ about this page
askIQ about MBB and VBR
Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $35.1bn on Sep 30, 2026 for Vanguard Morningstar Small-Cap Value ETF.
Pair scorecard
MBB costs 0.01 points a year less; their one-year returns differ by 18.4 points.
| Measure | MBB | VBR |
|---|---|---|
| Return | ||
| Total return, 1 year | −0.8% | +17.6% |
| Drawdown | ||
| Below its high | 3.9%, high on Aug 14, 2026 | |
| Benchmark | ||
| What it tracks | Bloomberg U.S. MBS Index | Morningstar US Small Cap Value Index |
| Cost and size | ||
| Expense ratio | 0.04% | 0.05% |
| Net assets, as of Sep 30, 2026 | $36.2bn | $35.1bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 30% | |
| Top ten holdings, share of the fund | 5.9% | |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
What they share
By the books each fund has filed, MBB and VBR hold 0% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
MBB and VBR on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MBB
MBB tracks an index of mortgage-backed securities. Over the year to Oct 28, 2026 it returned −0.8% with distributions reinvested, against −1.1% for its benchmark, the Bloomberg U.S. MBS Index. The prospectus expense ratio is 0.04% a year.
VBR
VBR tracks an index of Small-Cap Value. Over the year to Oct 28, 2026 it returned +17.6% with distributions reinvested. The prospectus expense ratio is 0.05% a year. By its holdings published by its issuer as of Sep 30, 2026, 30% of the fund by weight is stocks the S&P 500 also holds, across 822 positions, with the top ten at 5.9%. It sat 3.9% below its high of Aug 14, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, MBB or VBR?
- In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and VBR +17.6%.
- Which is cheaper, MBB or VBR?
- MBB is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Cite this pageCitation, APA and Markdown
ETFIQ, MBB against VBR, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-vbr
ETFIQ. (Oct 28, 2026). MBB against VBR. Retrieved from https://etfiq.com/compare/any/mbb-vs-vbr
[MBB against VBR (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mbb-vs-vbr)
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.