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

In the year to Oct 28, 2026, with distributions reinvested, IGM returned +21.7% and MBB −0.8%.

Which is cheaper, IGM 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

IGM vs MBB: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IGM returned +21.7% to MBB's −0.8%; 0% of their weight is in the same names.

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Net assets: $11.0bn on Oct 27, 2026 for iShares Expanded Tech Sector ETF, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.

IGM on its own →MBB on its own →

At a glance

+21.7%

IGM total return, 1 year

−0.8%

MBB total return, 1 year

0.37%

IGM expense ratio

0.04%

MBB expense ratio

Pair scorecard

MBB costs 0.33 points a year less; their one-year returns differ by 22.5 points; MBB is 3.3 times larger.

IGM vs MBB: Differences, Returns & Fees
Measure	IGM	MBB
Return
Measure	IGM	MBB
Total return, 1 year	+21.7%	−0.8%
Drawdown
Measure	IGM	MBB
Below its high	6.2%, high on Oct 6, 2026
Benchmark
Measure	IGM	MBB
What it tracks	S&P North American Expanded Technology Sector Index	Bloomberg U.S. MBS Index
Cost and size
Measure	IGM	MBB
Expense ratio	0.37%	0.04%
Net assets, as of Oct 26, 2026	$10.9bn	$35.6bn
Holdings
Measure	IGM	MBB
Holdings in common	0%
In the S&P 500, by weight	92%
Top ten holdings, share of the fund	56.8%

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

What they share

By the books each fund has filed, IGM 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 IGM MBB

Only in one fund ↓

Only in IGM

APPLE 9.36%

MICROSOFT 9.19%

NVIDIA 8.28%

BROADCOM INC 7.07%

ALPHABET CLASS A 4.57%

META PLATFORMS CLASS A 4.27%

ADVANCED MICRO DEVICES 4.16%

MICRON TECHNOLOGY 4.07%

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

IGM iShares Expanded Tech Sector ETF MBB iShares MBS ETF

Where it sits Stock ETF Bond ETF

Issuer iShares iShares

What it is Tracks an index of Expanded Tech Sector Tracks an index of mortgage-backed securities

Total return, 1 year +21.7% −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 295 10813

Net assets, IGM as of Oct 27, 2026 and MBB as of Oct 28, 2026 $11.0bn $35.5bn

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

Alert

About each fund

IGM

IGM tracks an index of Expanded Tech Sector. Over the year to Oct 28, 2026 it returned +21.7% with distributions reinvested. The prospectus expense ratio is 0.37% a year. By its holdings published by its issuer for Oct 27, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 295 positions, with the top ten at 56.8%. It sat 6.2% below its high of Oct 6, 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, IGM or MBB?: In the year to Oct 28, 2026, with distributions reinvested, IGM returned +21.7% and MBB −0.8%.
Which is cheaper, IGM 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

IGM vs TLT IGM vs IUSB IGM vs IGSB IGM vs SHV IYW vs MBB MBB vs XLK MBB vs VGT FTEC vs MBB

Where to next

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

Sources and dates

IGM and MBB filings on SEC EDGAR ↗

IGM prospectus with the expense ratio (SEC) ↗

iShares page for IGM ↗

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

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