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Data as of Nov 4, 2026.

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IMCB vs SMMD: Differences, Returns & Fees

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Over the year to Nov 4, 2026, IMCB returned +23.2% to SMMD's +22.4%; 5% of their weight is in the same names.

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Net assets: $1.8bn on Nov 4, 2026 for iShares Morningstar Mid-Cap ETF, and $4.2bn on Nov 3, 2026 for iShares Russell 2500 ETF.

IMCB on its own →SMMD on its own →
At a glance
+23.2%
IMCB total return, 1 year
+22.4%
SMMD total return, 1 year
0.04%
IMCB expense ratio
0.15%
SMMD expense ratio

Pair scorecard

IMCB costs 0.11 points a year less; their one-year returns differ by 0.8 points; SMMD is 2.3 times larger.

IMCB vs SMMD: Differences, Returns & Fees
MeasureIMCBSMMD
Return
Total return, 1 year+23.2%+22.4%
Drawdown
Below its high5.3%, high on Aug 14, 2026
Benchmark
What it tracksMorningstar US Mid Cap IndexRussell 2500 Index
Cost and size
Expense ratio0.04%0.15%
Net assets$1.8bn$4.2bn
Holdings
Holdings in common5%
Top ten holdings, share of the fund7.3%43.4%

Method

What they share

5%

By the books each fund has filed, IMCB and SMMD hold 5% of their money in the same securities at the same weight. Holdings dated Nov 3, 2026.

0 half 100%

half

5% in common

Positions both hold · largest shared weight first IMCB SMMD
ATI 0.17% 0.34%
PACKAGING CORP OF AMERICA 0.16% 0.31%
RELIANCE STEEL & ALUMINUM 0.16% 0.31%
NISOURCE 0.15% 0.30%
SOFI TECHNOLOGIES 0.15% 0.30%
TENET HEALTHCARE CORP 0.15% 0.30%
US FOODS HOLDING 0.15% 0.31%
VIATRIS 0.15% 0.31%
AFFIRM HOLDINGS CLASS A 0.14% 0.28%
NVENT ELECTRIC PLC 0.14% 0.29%
WOODWARD 0.14% 0.28%
ITT INC 0.13% 0.25%
Only in one fund ↓
Only in IMCB
MARATHON PETROLEUM 0.82%
AUTOMATIC DATA PROCESSING INC 0.81%
DELL TECHNOLOGIES INC CLASS C 0.80%
VALERO ENERGY CORP 0.77%
PHILLIPS 66 0.75%
BANK OF NEW YORK MELLON CORP 0.69%
SNOWFLAKE 0.69%
MARSH 0.67%
Only in SMMD
ISHARES RUSSELL 2000 ETF 40.62%
GUARDANT HEALTH 0.31%
ROKU CLASS A 0.29%
SKYWORKS SOLUTIONS 0.27%
EXELIXIS INC 0.25%
REVVITY 0.25%
RUBRIK CLASS A 0.25%
SHARKNINJA 0.25%
Check overlap with more funds →

Side by side

IMCB iShares Morningstar Mid-Cap ETF SMMD iShares Russell 2500 ETF
Where it sits Stock ETF Stock ETF
Issuer iShares iShares
What it is Tracks an index Tracks an index
Total return, 1 year +23.2% +22.4%
Its benchmark over the same days not measured +14.8% (IWV)
Gap to its benchmark not measured +7.6 pts vs IWV
Expense ratio 0.04% 0.15%
Already in the S&P 500 86.3% 10.3%
Holdings 393 516
Net assets, IMCB as of Nov 4, 2026 and SMMD as of Nov 3, 2026 $1.8bn $4.2bn

IMCB and SMMD on the fields both publish, as of Nov 4, 2026. Source: ETFIQ.

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About each fund
IMCB

IMCB tracks an index. Over the year to Nov 4, 2026 it returned +23.2% with distributions reinvested. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Nov 3, 2026, 86% of the fund by weight is stocks the S&P 500 also holds, across 393 positions, with the top ten at 7.3%.

SMMD

Over the year to Nov 4, 2026 it returned +22.4% with distributions reinvested, against +14.8% for its benchmark, the Russell 3000 Index.

SMMD tracks an index. The prospectus expense ratio is 0.15% a year. By its holdings published by its issuer for Nov 3, 2026, 10% of the fund by weight is stocks the S&P 500 also holds, across 516 positions, with the top ten at 43.4%. It sat 5.3% below its high of Aug 14, 2026 on Nov 4, 2026.

Questions people ask

Which returned more over the last year, IMCB or SMMD?
In the year to Nov 4, 2026, with distributions reinvested, IMCB returned +23.2% and SMMD +22.4%.
Which is cheaper, IMCB or SMMD?
IMCB is cheaper, by 0.11 percentage points a year. That is about $11 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IMCB and SMMD overlap with the S&P 500?
By their latest filed holdings, 86% of IMCB and 10% of SMMD by weight is stocks the S&P 500 already holds.
Other comparisons
IMCB vs IMCGIMCB vs IVOOCGMM vs IMCBIMCB vs TMSLSMMD vs SPGPKOMP vs SMMDPRFZ vs SMMDMDYG vs SMMD
Where to next
IMCB on its own →SMMD on its own →Hold both: look the portfolio through →Rankings →IMCB dividend history →IMCB holdings →SMMD dividend history →SMMD holdings →Standards and sources →
Sources and dates
IMCB and SMMD filings on SEC EDGAR ↗
IMCB prospectus with the expense ratio (SEC) ↗
iShares page for IMCB ↗
SMMD prospectus with the expense ratio (SEC) ↗
iShares page for SMMD ↗

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, IMCB against SMMD, data as of Nov 4, 2026. https://etfiq.com/compare/any/imcb-vs-smmd

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