Data as of Oct 28, 2026.
MBB vs XRT: Differences, Returns & Fees
Over the year to Oct 28, 2026, MBB returned −0.8% to XRT's +2.4%; 0% of their weight is in the same names.
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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $362m on Oct 27, 2026 for State Street SPDR S&P Retail ETF.
Pair scorecard
MBB costs 0.31 points a year less; their one-year returns differ by 3.2 points; MBB is far larger, $35.6bn against $367m.
| Measure | MBB | XRT |
|---|---|---|
| Return | ||
| Total return, 1 year | −0.8% | +2.4% |
| Drawdown | ||
| Below its high | 9.9%, high on Nov 16, 2021 | |
| Benchmark | ||
| What it tracks | Bloomberg U.S. MBS Index | S&P Retail Select Industry Index |
| Cost and size | ||
| Expense ratio | 0.04% | 0.35% |
| Net assets, as of Oct 26, 2026 | $35.6bn | $367m |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 22% | |
| Top ten holdings, share of the fund | 16.6% | |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
Mar 23, 2007 to Oct 23, 2026 · 1,022 weekly returnsXRT returned more: +425.0% to +63.4%. MBB swung less: 4.2% to 26.0%. MBB fell less at its worst: −17.4% to −64.5%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | MBB | XRT | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +63.4% | +425.0% | XRT | Price change plus distributions, reinvested. |
| Annualized | +2.5% | +8.8% | XRT | Total return as a yearly rate. |
| Price return | −9.6% | +303.9% | XRT | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 4.2% | 26.0% | MBB | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 2.9% | 17.6% | MBB | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −17.4% | −64.5% | MBB | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.24 | 0.39 | XRT | Return above Treasury bills per unit of volatility. |
| Sortino | 0.35 | 0.58 | XRT | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.15 | 0.14 | MBB (slight) | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,022 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, MBB and XRT 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
MBB and XRT on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MBB and XRT do different jobs. What does each one do in a portfolio?
- What each follows. MBB follows Bloomberg U.S. MBS Index and XRT follows S&P Retail Select Industry Index.
- Holdings in common. 0% of the weight is in the same securities (holdings dated Oct 27, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 MBB returned −0.8% and XRT +2.4% with distributions reinvested, a gap of 3.2 points.
Data as of Oct 28, 2026.
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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.
XRT
XRT tracks the S&P Retail. Over the year to Oct 28, 2026 it returned +2.4% with distributions reinvested. The prospectus expense ratio is 0.35% a year. By its holdings published by its issuer for Oct 27, 2026, 22% of the fund by weight is stocks the S&P 500 also holds, across 74 positions, with the top ten at 16.6%. It sat 9.9% below its high of Nov 16, 2021 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, MBB or XRT?
- In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and XRT +2.4%.
- Which is cheaper, MBB or XRT?
- MBB is cheaper, by 0.31 percentage points a year. That is about $31 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, MBB against XRT, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-xrt
ETFIQ. (Oct 28, 2026). MBB against XRT. Retrieved from https://etfiq.com/compare/any/mbb-vs-xrt
[MBB against XRT (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mbb-vs-xrt)
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