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

In the year to Oct 28, 2026, with distributions reinvested, IWF returned +0.9% and MDY +12.8%.

Which is cheaper, IWF or MDY?

IWF is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.

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

By their latest filed holdings, 94% of IWF and 0% of MDY by weight is stocks the S&P 500 already holds.

Data as of Oct 28, 2026.

Across categories

IWF vs MDY: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IWF returned +0.9% to MDY's +12.8%; 2% of their weight is in the same names.

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Net assets on Oct 27, 2026: $124.7bn for iShares Russell 1000 Growth ETF and $25.9bn for SPDR S&P MidCap 400 ETF Trust.

IWF on its own →MDY on its own →

At a glance

+0.9%

IWF total return, 1 year

+12.8%

MDY total return, 1 year

0.18%

IWF expense ratio

0.23%

MDY expense ratio

Pair scorecard

IWF costs 0.05 points a year less; their one-year returns differ by 11.9 points; IWF is 4.8 times larger.

IWF vs MDY: Differences, Returns & Fees
Measure	IWF	MDY
Return
Measure	IWF	MDY
Total return, 1 year	+0.9%	+12.8%
Drawdown
Measure	IWF	MDY
Below its high	4.8%, high on Oct 6, 2026	6.5%, high on Aug 14, 2026
Benchmark
Measure	IWF	MDY
What it tracks	Russell 1000 Growth Index	S&P MidCap 400 Index
Cost and size
Measure	IWF	MDY
Expense ratio	0.18%	0.23%
Net assets, as of Oct 27, 2026	$124.7bn	$25.9bn
Holdings
Measure	IWF	MDY
Holdings in common	2%
Top ten holdings, share of the fund	57.5%	7.5%

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

What they share

By the books each fund has filed, IWF and MDY hold 2% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

2% in common

Positions both hold · largest shared weight first IWF MDY

ATI 0.07% 0.66%

XPO 0.07% 0.64%

ROKU CLASS A 0.06% 0.60%

WOODWARD 0.05% 0.52%

MACOM TECHNOLOGY SOLUTIONS 0.05% 0.52%

MEDPACE HOLDINGS 0.05% 0.44%

TOAST CLASS A 0.05% 0.47%

HALOZYME THERAPEUTICS 0.04% 0.42%

BURLINGTON STORES 0.04% 0.43%

LATTICE SEMICONDUCTOR 0.04% 0.43%

CARPENTER TECHNOLOGY 0.04% 0.41%

MANHATTAN ASSOCIATES 0.04% 0.40%

Only in one fund ↓

Only in IWF

NVIDIA 15.30%

APPLE 8.18%

MICROSOFT 5.94%

ALPHABET CLASS A 5.62%

BROADCOM INC 4.79%

ALPHABET CLASS C 4.53%

TESLA INC 3.58%

META PLATFORMS CLASS A 3.36%

Only in MDY

Okta Inc. Class A 1.09%

U.S. Dollar 0.96%

United Therapeutics Corporation 0.73%

US Foods Holding Corp. 0.64%

Reliance Inc. 0.64%

Tenet Healthcare Corporation 0.61%

TD SYNNEX Corporation 0.59%

Royal Gold Inc. 0.59%

Check overlap with more funds →

Side by side

IWF iShares Russell 1000 Growth ETF MDY SPDR S&P MidCap 400 ETF Trust

Where it sits Stock ETF Stock ETF

Issuer iShares State Street

What it is Tracks the Russell 1000 growth Tracks the S&P MidCap 400

Total return, 1 year +0.9% +12.8%

Its benchmark over the same days +1.1% (VONG) +13.2% (IJH)

Gap to its benchmark −0.2 pts vs VONG −0.4 pts vs IJH

Expense ratio 0.18% 0.23%

Already in the S&P 500 93.5% 0.0%

Holdings 374 401

Net assets, as of Oct 27, 2026 $124.7bn $25.9bn

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

Alert

About each fund

IWF

IWF tracks the Russell 1000 growth. Over the year to Oct 28, 2026 it returned +0.9% with distributions reinvested, against +1.1% for its benchmark, the Russell 1000 Growth Index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 27, 2026, 94% of the fund by weight is stocks the S&P 500 also holds, across 374 positions, with the top ten at 57.5%. It sat 4.8% below its high of Oct 6, 2026 on Oct 28, 2026.

MDY

MDY tracks the S&P MidCap 400. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested, against +13.2% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.23% 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 401 positions, with the top ten at 7.5%. It sat 6.5% below its high of Aug 14, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, IWF or MDY?: In the year to Oct 28, 2026, with distributions reinvested, IWF returned +0.9% and MDY +12.8%.
Which is cheaper, IWF or MDY?: IWF is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IWF and MDY overlap with the S&P 500?: By their latest filed holdings, 94% of IWF and 0% of MDY by weight is stocks the S&P 500 already holds.

Other comparisons

IWF vs VO IWF vs VXF IWF vs MOAT IJH vs IWF MDY vs QQQM MDY vs VUG MDY vs QQQ MDY vs SCHG

Where to next

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

Sources and dates

IWF filings on SEC EDGAR ↗

IWF prospectus with the expense ratio (SEC) ↗

iShares page for IWF ↗

MDY filings on SEC EDGAR ↗

State Street website ↗

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, IWF against MDY, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwf-vs-mdy

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