Data as of Oct 28, 2026.
IWD vs MBB: Differences, Returns & Fees
Over the year to Oct 28, 2026, IWD returned +27.5% to MBB's −0.8%; 0% of their weight is in the same names.
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Net assets: $83.0bn on Oct 27, 2026 for iShares Russell 1000 Value ETF, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.
Pair scorecard
MBB costs 0.14 points a year less; their one-year returns differ by 28.3 points; IWD is 2.4 times larger.
| Measure | IWD | MBB |
|---|---|---|
| Return | ||
| Total return, 1 year | +27.5% | −0.8% |
| Benchmark | ||
| What it tracks | Russell 1000 Value Index | Bloomberg U.S. MBS Index |
| Cost and size | ||
| Expense ratio | 0.18% | 0.04% |
| Net assets, as of Oct 26, 2026 | $84.8bn | $35.6bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 90% | |
| Top ten holdings, share of the fund | 29.6% | |
Holdings in common uses holdings dated Oct 27, 2026. Method
What they share
By the books each fund has filed, IWD 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
IWD and MBB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IWD
IWD tracks the Russell 1000 value. Over the year to Oct 28, 2026 it returned +27.5% with distributions reinvested, against +27.7% for its benchmark, the Russell 1000 Value Index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 27, 2026, 90% of the fund by weight is stocks the S&P 500 also holds, across 871 positions, with the top ten at 29.6%.
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, IWD or MBB?
- In the year to Oct 28, 2026, with distributions reinvested, IWD returned +27.5% and MBB −0.8%.
- Which is cheaper, IWD or MBB?
- MBB is cheaper, by 0.14 percentage points a year. That is about $14 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, IWD against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwd-vs-mbb
ETFIQ. (Oct 28, 2026). IWD against MBB. Retrieved from https://etfiq.com/compare/any/iwd-vs-mbb
[IWD against MBB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/iwd-vs-mbb)
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.