Data as of Oct 28, 2026.
DIA vs MBB: Differences, Returns & Fees
Over the year to Oct 28, 2026, DIA returned +11.6% to MBB's −0.8%; 0% of their weight is in the same names.
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Net assets: $45.9bn on Oct 27, 2026 for SPDR Dow Jones Industrial Average ETF Trust, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.
Pair scorecard
MBB costs 0.12 points a year less; their one-year returns differ by 12.4 points; DIA is 1.3 times larger.
| Measure | DIA | MBB |
|---|---|---|
| Return | ||
| Total return, 1 year | +11.6% | −0.8% |
| Drawdown | ||
| Below its high | 3.0%, high on Aug 5, 2026 | |
| Benchmark | ||
| What it tracks | Dow Jones Industrial Average | Bloomberg U.S. MBS Index |
| Cost and size | ||
| Expense ratio | 0.16% | 0.04% |
| Net assets, as of Oct 26, 2026 | $45.7bn | $35.6bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 97% | |
| Top ten holdings, share of the fund | 54.7% | |
Holdings in common uses holdings dated Oct 27, 2026. Method
What they share
By the books each fund has filed, DIA and MBB hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
DIA and MBB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
DIA
DIA tracks the Dow Jones Industrial Average. Over the year to Oct 28, 2026 it returned +11.6% with distributions reinvested. The prospectus expense ratio is 0.16% a year. By its holdings published by its issuer for Oct 27, 2026, 97% of the fund by weight is stocks the S&P 500 also holds, across 30 positions, with the top ten at 54.7%. It sat 3.0% below its high of Aug 5, 2026 on Oct 28, 2026.
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.
Questions people ask
- Which returned more over the last year, DIA or MBB?
- In the year to Oct 28, 2026, with distributions reinvested, DIA returned +11.6% and MBB −0.8%.
- Which is cheaper, DIA or MBB?
- MBB is cheaper, by 0.12 percentage points a year. That is about $12 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.
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ETFIQ, DIA against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/dia-vs-mbb
ETFIQ. (Oct 28, 2026). DIA against MBB. Retrieved from https://etfiq.com/compare/any/dia-vs-mbb
[DIA against MBB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/dia-vs-mbb)
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