Which returned more over the last year, ACWI or IWM?

In the year to Oct 28, 2026, with distributions reinvested, ACWI returned +13.4% and IWM +14.1%.

Which is cheaper, ACWI or IWM?

IWM is cheaper, by 0.13 percentage points a year. That is about $13 on $10,000 held for a year. Fees come from each fund's prospectus.

How much do ACWI and IWM overlap with the S&P 500?

By their latest filed holdings, 61% of ACWI and 0% of IWM by weight is stocks the S&P 500 already holds.

Data as of Oct 28, 2026.

Across categories

ACWI vs IWM: Differences, Returns & Fees

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Over the year to Oct 28, 2026, ACWI returned +13.4% to IWM's +14.1%; 1% of their weight is in the same names.

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Net assets: $33.0bn on Oct 28, 2026 for iShares MSCI ACWI ETF, and $75.5bn on Oct 27, 2026 for iShares Russell 2000 ETF.

ACWI on its own →IWM on its own →

At a glance

+13.4%

ACWI total return, 1 year

+14.1%

IWM total return, 1 year

0.32%

ACWI expense ratio

0.19%

IWM expense ratio

Pair scorecard

IWM costs 0.13 points a year less; their one-year returns differ by 0.7 points; IWM is 2.3 times larger.

ACWI vs IWM: Differences, Returns & Fees
Measure	ACWI	IWM
Return
Measure	ACWI	IWM
Total return, 1 year	+13.4%	+14.1%
Drawdown
Measure	ACWI	IWM
Below its high		7.6%, high on Aug 14, 2026
Benchmark
Measure	ACWI	IWM
What it tracks	MSCI ACWI	Russell 2000 Index
Cost and size
Measure	ACWI	IWM
Expense ratio	0.32%	0.19%
Net assets, as of Oct 26, 2026	$32.6bn	$74.6bn
Holdings
Measure	ACWI	IWM
Holdings in common	1%
Top ten holdings, share of the fund	24.9%	3.3%

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

What they share

By the books each fund has filed, ACWI and IWM hold 1% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

1% in common

Positions both hold · largest shared weight first ACWI IWM

AIRBUS GROUP 0.12% 0.13%

LVMH 0.10% 0.14%

CANADIAN NATIONAL RAILWAY 0.06% 0.16%

LAIR LIQUIDE SOCIETE ANONYME POUR 0.12% 0.06%

COMPASS GROUP PLC 0.05% 0.24%

SIEMENS ENERGY N AG 0.11% 0.05%

UCB SA 0.04% 0.15%

ORANGE SA 0.03% 0.19%

FIRST FINANCIAL HOLDING LTD 0.02% 0.03%

MTU AERO ENGINES HOLDING AG 0.02% 0.06%

NN GROUP 0.02% 0.04%

TERNA RETE ELETTRICA NAZIONALE 0.02% 0.07%

Only in one fund ↓

Only in ACWI

APPLE 4.97%

NVIDIA 4.89%

MICROSOFT 3.66%

AMAZON.COM INC 2.39%

ALPHABET CLASS A 1.83%

TAIWAN SEMICONDUCTOR MANUFACTURING 1.77%

BROADCOM INC 1.51%

ALPHABET CLASS C 1.44%

Only in IWM

JFROG 0.37%

GLAUKOS 0.35%

TWIST BIOSCIENCE 0.35%

MOOG INC CLASS A 0.34%

BRIGHTSPRING HEALTH SERVICES INC 0.33%

UMB FINANCIAL 0.33%

10X GENOMICS CLASS A 0.31%

RYMAN HOSPITALITY PROPERTIES REIT 0.30%

Check overlap with more funds →

Side by side

ACWI iShares MSCI ACWI ETF IWM iShares Russell 2000 ETF

Where it sits Stock ETF Stock ETF

Issuer iShares iShares

What it is Tracks the MSCI ACWI Tracks the Russell 2000

Total return, 1 year +13.4% +14.1%

Its benchmark over the same days not measured +14.3% (VTWO)

Gap to its benchmark not measured −0.2 pts vs VTWO

Expense ratio 0.32% 0.19%

Already in the S&P 500 60.9% 0.0%

Holdings 2197 1977

Net assets, ACWI as of Oct 28, 2026 and IWM as of Oct 27, 2026 $33.0bn $75.5bn

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

Alert

About each fund

ACWI

ACWI tracks the MSCI ACWI. Over the year to Oct 28, 2026 it returned +13.4% with distributions reinvested. The prospectus expense ratio is 0.32% a year. By its holdings published by its issuer for Oct 27, 2026, 61% of the fund by weight is stocks the S&P 500 also holds, across 2,197 positions, with the top ten at 24.9%.

IWM

IWM tracks the Russell 2000. Over the year to Oct 28, 2026 it returned +14.1% with distributions reinvested, against +14.3% for its benchmark, the Russell 2000 Index. The prospectus expense ratio is 0.19% 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 1,977 positions, with the top ten at 3.3%. It sat 7.6% below its high of Aug 14, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, ACWI or IWM?: In the year to Oct 28, 2026, with distributions reinvested, ACWI returned +13.4% and IWM +14.1%.
Which is cheaper, ACWI or IWM?: IWM is cheaper, by 0.13 percentage points a year. That is about $13 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do ACWI and IWM overlap with the S&P 500?: By their latest filed holdings, 61% of ACWI and 0% of IWM by weight is stocks the S&P 500 already holds.

Other comparisons

ACWI vs IWC ACWI vs VB ACWI vs IJR ACWI vs IJT IWM vs VT IWM vs URTH IDEV vs IWM IWM vs VGK

Where to next

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

Sources and dates

ACWI and IWM filings on SEC EDGAR ↗

ACWI prospectus with the expense ratio (SEC) ↗

iShares page for ACWI ↗

IWM prospectus with the expense ratio (SEC) ↗

iShares page for IWM ↗

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, ACWI against IWM, data as of Oct 28, 2026. https://etfiq.com/compare/any/acwi-vs-iwm

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