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

In the year to Oct 28, 2026, with distributions reinvested, IJR returned +17.5% and MBB −0.8%.

Which is cheaper, IJR or MBB?

MBB is cheaper, by 0.02 percentage points a year. That is about $2 on $10,000 held for a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

IJR vs MBB: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IJR returned +17.5% to MBB's −0.8%; 0% of their weight is in the same names.

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Net assets: $104.6bn on Oct 27, 2026 for iShares Core S&P Small-Cap ETF, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.

IJR on its own →MBB on its own →

At a glance

+17.5%

IJR total return, 1 year

−0.8%

MBB total return, 1 year

0.06%

IJR expense ratio

0.04%

MBB expense ratio

Pair scorecard

MBB costs 0.02 points a year less; their one-year returns differ by 18.3 points; IJR is 2.9 times larger.

IJR vs MBB: Differences, Returns & Fees
Measure	IJR	MBB
Return
Measure	IJR	MBB
Total return, 1 year	+17.5%	−0.8%
Drawdown
Measure	IJR	MBB
Below its high	6.8%, high on Aug 14, 2026
Benchmark
Measure	IJR	MBB
What it tracks	S&P SmallCap 600	Bloomberg U.S. MBS Index
Cost and size
Measure	IJR	MBB
Expense ratio	0.06%	0.04%
Net assets, as of Oct 26, 2026	$104.0bn	$35.6bn
Holdings
Measure	IJR	MBB
Holdings in common	0%
In the S&P 500, by weight	0%
Top ten holdings, share of the fund	5.3%

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

What they share

By the books each fund has filed, IJR 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 IJR MBB

Only in one fund ↓

Only in IJR

GLAUKOS 0.61%

PAYCOM SOFTWARE 0.57%

MATCH GROUP INC 0.57%

VIASAT INC 0.55%

SM ENERGY 0.53%

PROTAGONIST THERAPEUTICS 0.52%

RYMAN HOSPITALITY PROPERTIES REIT 0.51%

JACKSON FINANCIAL CLASS A 0.48%

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

IJR iShares Core S&P Small-Cap ETF MBB iShares MBS ETF

Where it sits Stock ETF Bond ETF

Issuer iShares iShares

What it is Tracks the S&P SmallCap 600 Tracks an index of mortgage-backed securities

Total return, 1 year +17.5% −0.8%

Its benchmark over the same days +17.6% (SPSM) −1.1% (SPMB)

Gap to its benchmark −0.1 pts vs SPSM +0.3 pts vs SPMB

Expense ratio 0.06% 0.04%

Holdings 642 10813

Net assets, IJR as of Oct 27, 2026 and MBB as of Oct 28, 2026 $104.6bn $35.5bn

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

Alert

About each fund

IJR

IJR tracks the S&P SmallCap 600. Over the year to Oct 28, 2026 it returned +17.5% with distributions reinvested, against +17.6% for its benchmark, the S&P SmallCap 600. The prospectus expense ratio is 0.06% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 642 positions, with the top ten at 5.3%. It sat 6.8% below its high of Aug 14, 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, IJR or MBB?: In the year to Oct 28, 2026, with distributions reinvested, IJR returned +17.5% and MBB −0.8%.
Which is cheaper, IJR or MBB?: MBB is cheaper, by 0.02 percentage points a year. That is about $2 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

IJR vs TLT IJR vs IUSB IJR vs VTIP IJR vs PULS MBB vs VB IWM vs MBB MBB vs VTWO IJT vs MBB

Where to next

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

Sources and dates

IJR and MBB filings on SEC EDGAR ↗

IJR prospectus with the expense ratio (SEC) ↗

iShares page for IJR ↗

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

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