Which returned more over the last year, DIA or IWC?

In the year to Sep 13, 2026, with distributions reinvested, DIA returned +15.6% and IWC returned +31.3%, so IWC returned more. One year is one year; the longer windows are in the table.

How much do DIA and IWC overlap with the S&P 500?

By their latest filed holdings, 97% of DIA and 92% of IWC by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.

Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

DIA vs IWC: how they differ

DIA and IWC hold 0% of their weight in the same names, and IWC returned more over the year.

SPDR Dow Jones Industrial Average ETF Trust and iShares Micro-Cap ETF.

What they hold in common

By the books each fund has filed, DIA and IWC hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in DIA	Only in IWC
GOLDMAN SACHS GROUP INC 11.61%	CAREDX 0.61%
CATERPILLAR INC 9.17%	SELLAS LIFE SCIENCES GROUP INC 0.60%
MICROSOFT CORP 5.61%	NURIX THERAPEUTICS 0.59%
UNITEDHEALTH GROUP INC 4.42%	PENGUIN SOLUTIONS INC 0.58%
AMGEN INC 4.36%	OUSTER 0.52%
TRAVELERS COS INC/THE 4.19%	VIRIDIAN THERAPEUTICS ORS 0.48%
VISA INC CLASS A SHARES 4.18%	INTERFACE 0.47%
JPMORGAN CHASE + CO 4.03%	MBX BIOSCIENCES 0.45%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Sep 10, 2026.

DIA and IWC on the fields both publish, as of Sep 13, 2026. Source: ETFIQ.
	DIA SPDR Dow Jones Industrial Average ETF Trust	IWC iShares Micro-Cap ETF
Where it sits	Core index fund	Core index fund
Issuer	State Street	iShares
What it is	Dow Jones Industrial Average	Russell Microcap
Total return, 1 year	+15.6%	+31.3%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−1.9 pts	+13.8 pts
Already in the S&P 500	97.1%	91.9%
Holdings	31	1252

DIA in plain words

DIA is an index equity fund tracking the Dow Jones Industrial Average. Over the year to Sep 11, 2026 it returned +15.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. By its holdings filed for Sep 10, 2026, 97% of the fund by weight is stocks the S&P 500 also holds, across 31 positions, with the top ten at 55.1%. It sat 3.1% below its high of Aug 5, 2026 on Sep 11, 2026.

IWC in plain words

IWC is an index equity fund tracking the Russell Microcap. Over the year to Sep 11, 2026 it returned +31.3% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. By its holdings filed for Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1252 positions, with the top ten at 5.1%. It sat 5.0% below its high of Aug 14, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, DIA or IWC?: In the year to Sep 13, 2026, with distributions reinvested, DIA returned +15.6% and IWC returned +31.3%, so IWC returned more. One year is one year; the longer windows are in the table.
How much do DIA and IWC overlap with the S&P 500?: By their latest filed holdings, 97% of DIA and 92% of IWC by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.

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Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

DIA against IWC, ETFIQ, data as of Sep 13, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, DIA against IWC, data as of Sep 13, 2026. https://etfiq.com/compare/any/dia-vs-iwc Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources