Which returned more over the last year, IWF or VBK?

In the year to Sep 12, 2026, with distributions reinvested, IWF returned +7.0% and VBK returned +13.8%, so VBK returned more. One year is one year; the longer windows are in the table.

Which is cheaper, IWF or VBK?

IWF charges 0.18% a year and VBK charges 0.05%, so VBK is cheaper. Fees come from each fund's prospectus.

How much do IWF and VBK overlap with the S&P 500?

By their latest filed holdings, 94% of IWF and 10% of VBK by weight is stocks the S&P 500 already holds. Between the two funds, 4% of their books are the same securities at the same weight.

Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

IWF vs VBK: how they differ

IWF and VBK hold 4% of their weight in the same names, and VBK returned more over the year.

iShares Russell 1000 Growth ETF and Vanguard Small-Cap Growth Index Fund.

What they hold in common

By the books each fund has filed, IWF and VBK hold 4% of their money in the same securities at the same weight.

Positions IWF and VBK both hold, largest shared weight first
Holding	IWF	VBK
Astera Labs, Inc	0.22%	1.05%
Credo Technology Group Holding Ltd	0.13%	1.27%
NATERA, INC.	0.11%	1.04%
EMCOR GROUP, INC.	0.11%	0.52%
REVOLUTION MEDICINES, INC.	0.11%	1.07%
CARPENTER TECHNOLOGY CORPORATION	0.09%	0.82%
FTAI Aviation Ltd.	0.08%	0.78%
ATI INC	0.08%	0.76%
CASEY'S GENERAL STORES, INC.	0.08%	0.83%
MASTEC, INC.	0.08%	0.74%
MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC	0.08%	0.74%
TEXAS PACIFIC LAND CORPORATION	0.08%	0.36%

Largest positions each one holds and the other does not
Only in IWF	Only in VBK
NVIDIA CORPORATION 13.85%	Okta Inc 0.65%
APPLE INC. 6.72%	RB Global Inc 0.61%
ALPHABET INC. 6.18%	Liberty Media Corp-Liberty Formula One 0.57%
BROADCOM INC. 5.21%	Incyte Corp 0.54%
ALPHABET INC. 4.98%	Roivant Sciences Ltd 0.50%
MICROSOFT CORPORATION 4.11%	Generac Holdings Inc 0.49%
MICRON TECHNOLOGY, INC. 3.86%	Nextpower Inc 0.48%
TESLA, INC. 3.65%	Royal Gold Inc 0.48%

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 Jun 30, 2026.

IWF and VBK on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	IWF iShares Russell 1000 Growth ETF	VBK Vanguard Small-Cap Growth Index Fund
Where it sits	Core index fund	Core index fund
Issuer	iShares	Vanguard
What it is	Russell 1000 growth	Small-Cap Growth
Total return, 1 year	+7.0%	+13.8%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−10.5 pts	−3.7 pts
Expense ratio	0.18%	0.05%
Already in the S&P 500	93.6%	10.2%
Holdings	368	545

IWF in plain words

IWF is an index equity fund tracking the Russell 1000 growth. Over the year to Sep 11, 2026 it returned +7.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.18% a year. By its holdings filed for Jun 30, 2026, 94% of the fund by weight is stocks the S&P 500 also holds, across 368 positions, with the top ten at 54.4%. It sat 5.0% below its high of Jun 1, 2026 on Sep 11, 2026.

VBK in plain words

VBK is an index equity fund tracking the Small-Cap Growth. Over the year to Sep 11, 2026 it returned +13.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.05% a year. By its holdings filed for Jun 30, 2026, 10% of the fund by weight is stocks the S&P 500 also holds, across 545 positions, with the top ten at 9.3%. It sat 7.0% below its high of Aug 17, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, IWF or VBK?: In the year to Sep 12, 2026, with distributions reinvested, IWF returned +7.0% and VBK returned +13.8%, so VBK returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IWF or VBK?: IWF charges 0.18% a year and VBK charges 0.05%, so VBK is cheaper. Fees come from each fund's prospectus.
How much do IWF and VBK overlap with the S&P 500?: By their latest filed holdings, 94% of IWF and 10% of VBK by weight is stocks the S&P 500 already holds. Between the two funds, 4% 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.

IWF against VBK, ETFIQ, data as of Sep 12, 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, IWF against VBK, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWF-VBK Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources