Data as of Oct 28, 2026.

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MBB vs XLRE: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MBB returned −0.8% to XLRE's +4.3%; 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 $8.0bn on Oct 27, 2026 for State Street Real Estate Select Sector SPDR ETF.

At a glance
−0.8%
MBB total return, 1 year
+4.3%
XLRE total return, 1 year
0.04%
MBB expense ratio
0.08%
XLRE expense ratio

Pair scorecard

MBB costs 0.04 points a year less; their one-year returns differ by 5.1 points; MBB is 4.5 times larger.

MBB vs XLRE: Differences, Returns & Fees
MeasureMBBXLRE
Return
Total return, 1 year−0.8%+4.3%
Drawdown
Below its high7.7%, high on Jul 28, 2026
Benchmark
What it tracksBloomberg U.S. MBS IndexReal Estate Select Sector Index
Cost and size
Expense ratio0.04%0.08%
Net assets, as of Oct 26, 2026$35.6bn$8.0bn
Holdings
Holdings in common0%
In the S&P 500, by weight100%
Top ten holdings, share of the fund58.9%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

0%

By the books each fund has filed, MBB and XLRE hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB XLRE
Only in one fund ↓
Only in MBB
BLACKROCK CASH CL INST SL AGENCY 5.45%
FHLMC 30YR UMBS SUPER 1.05%
UMBS 30YR TBA(REG A) 0.60%
GNMA2 30YR 0.59%
GNMA2 30YR 0.54%
FNMA 30YR UMBS 0.53%
GNMA2 30YR 0.53%
GNMA2 30YR 0.52%
Only in XLRE
WELLTOWER INC 11.14%
PROLOGIS INC 8.19%
EQUINIX INC 6.72%
AMERICAN TOWER CORP 5.84%
PUBLIC STORAGE 4.87%
SIMON PROPERTY GROUP INC 4.76%
VIVMARK RESIDENTIAL 4.42%
DIGITAL REALTY TRUST INC 4.34%
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Side by side

MBB iShares MBS ETF XLRE State Street Real Estate Select Sector SPDR ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of mortgage-backed securities Tracks an index of Real estate
Total return, 1 year −0.8% +4.3%
Its benchmark over the same days −1.1% (SPMB) not measured
Gap to its benchmark +0.3 pts vs SPMB not measured
Expense ratio 0.04% 0.08%
Holdings 10813 31
Net assets, MBB as of Oct 28, 2026 and XLRE as of Oct 27, 2026 $35.5bn $8.0bn

MBB and XLRE on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
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.

XLRE

XLRE tracks an index of Real estate. Over the year to Oct 28, 2026 it returned +4.3% with distributions reinvested. The prospectus expense ratio is 0.08% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 31 positions, with the top ten at 58.9%. It sat 7.7% below its high of Jul 28, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, MBB or XLRE?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and XLRE +4.3%.
Which is cheaper, MBB or XLRE?
MBB is cheaper, by 0.04 percentage points a year. That is about $4 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MBB against XLRE, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-xlre

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