Which returned more over the last year, IYR or MBB?

In the year to Oct 28, 2026, with distributions reinvested, IYR returned +3.4% and MBB −0.8%.

Which is cheaper, IYR or MBB?

MBB is cheaper, by 0.33 percentage points a year. That is about $33 on $10,000 held for a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

IYR vs MBB: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IYR returned +3.4% to MBB's −0.8%; 0% of their weight is in the same names.

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Net assets on Oct 28, 2026: $3.9bn for iShares U.S. Real Estate ETF and $35.5bn for iShares MBS ETF.

IYR on its own →MBB on its own →

At a glance

+3.4%

IYR total return, 1 year

−0.8%

MBB total return, 1 year

0.37%

IYR expense ratio

0.04%

MBB expense ratio

Pair scorecard

MBB costs 0.33 points a year less; their one-year returns differ by 4.2 points; MBB is 9.1 times larger.

IYR vs MBB: Differences, Returns & Fees
Measure	IYR	MBB
Return
Measure	IYR	MBB
Total return, 1 year	+3.4%	−0.8%
Drawdown
Measure	IYR	MBB
Below its high	8.6%, high on Jul 28, 2026
Benchmark
Measure	IYR	MBB
What it tracks	Dow Jones U.S. Real Estate Capped Index	Bloomberg U.S. MBS Index
Cost and size
Measure	IYR	MBB
Expense ratio	0.37%	0.04%
Net assets	$3.9bn	$35.5bn
Holdings
Measure	IYR	MBB
Holdings in common	0%
In the S&P 500, by weight	80%
Top ten holdings, share of the fund	52.5%

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

What they share

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

50%

0 half 100%

half

0% in common

Positions both hold · largest shared weight first IYR MBB

Only in one fund ↓

Only in IYR

WELLTOWER 9.85%

PROLOGIS REIT 8.77%

AMERICAN TOWER REIT 4.96%

SIMON PROPERTY GROUP REIT INC 4.71%

EQUINIX REIT 4.57%

DIGITAL REALTY TRUST REIT 4.54%

REALTY INCOME REIT 4.19%

PUBLIC STORAGE REIT 4.10%

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%

Check overlap with more funds →

Side by side

IYR iShares U.S. Real Estate ETF MBB iShares MBS ETF

Where it sits Stock ETF Bond ETF

Issuer iShares iShares

What it is Tracks an index of U.S. Real Estate Tracks an index of mortgage-backed securities

Total return, 1 year +3.4% −0.8%

Its benchmark over the same days not measured −1.1% (SPMB)

Gap to its benchmark not measured +0.3 pts vs SPMB

Expense ratio 0.37% 0.04%

Holdings 59 10813

Net assets $3.9bn $35.5bn

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

Alert

About each fund

IYR

IYR tracks an index of U.S. Real Estate. Over the year to Oct 28, 2026 it returned +3.4% with distributions reinvested. The prospectus expense ratio is 0.37% a year. By its holdings published by its issuer for Oct 27, 2026, 80% of the fund by weight is stocks the S&P 500 also holds, across 59 positions, with the top ten at 52.5%. It sat 8.6% below its high of Jul 28, 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, IYR or MBB?: In the year to Oct 28, 2026, with distributions reinvested, IYR returned +3.4% and MBB −0.8%.
Which is cheaper, IYR or MBB?: MBB is cheaper, by 0.33 percentage points a year. That is about $33 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

IYR vs VGIT IYR vs TLT IYR vs SHV IYR vs VTIP MBB vs SCHH MBB vs VNQ MBB vs XLRE KRE vs MBB

Where to next

IYR on its own →MBB on its own →Hold both: look the portfolio through →Rankings →IYR dividend history →IYR holdings →MBB dividend history →MBB holdings →Standards and sources →

Sources and dates

IYR and MBB filings on SEC EDGAR ↗

IYR prospectus with the expense ratio (SEC) ↗

iShares page for IYR ↗

MBB prospectus with the expense ratio (SEC) ↗

iShares page for MBB ↗

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, IYR against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/iyr-vs-mbb

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.