ETF Overlap Checker
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ETF Overlap Checker

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DIA vs IWF Overlap

DIA is an industrials ETF from SPDR, while IWF is a U.S. growth equity ETF from IShares. DIA and IWF show meaningful overlap, with an estimated weighted overlap of 22.69%. They share 18 holdings in the loaded dataset, led by MSFT, GOOGL, and AAPL.

22.7% overlap
#
18Shared Holdings
OK
Moderate Overlap

Freshly computed.

Quick Answer

DIA is an industrials ETF from SPDR, while IWF is a U.S. growth equity ETF from IShares. DIA and IWF show meaningful overlap, with an estimated weighted overlap of 22.69%. They share 18 holdings in the loaded dataset, led by MSFT, GOOGL, and AAPL.

  • 22.69% weighted overlap across 18 shared holdings.
  • The top three shared holdings explain 54.93% of the measured overlap.
  • IWF is the broader fund, while DIA is more targeted.
  • The overlap is mostly explained by the top shared positions rather than sector labels alone.
  • Holding both may add less diversification than the fund names imply.

Data Freshness

DIA holdings
Aug 12, 2026
IWF holdings
Aug 12, 2026
Overlap computed
Aug 13, 2026
Data source
Financial Modeling Prep

Review the methodology for the overlap formula and refresh policy.

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About These ETFs

ETF A

DIA

State Street SPDR Dow Jones Industrial Average ETF Trust

Issuer
SPDR
Asset class
Equity
Expense ratio
0.16%
AUM
$47B
Inception
Jan 14, 1998

ETF B

IWF

iShares Russell 1000 Growth ETF

Issuer
IShares
Asset class
Equity
Expense ratio
0.18%
AUM
$128B
Inception
May 21, 2000

What Stands Out In This Comparison

01

What This Means

DIA is an industrials ETF from SPDR, while IWF is a U.S. growth equity ETF from IShares. DIA and IWF overlap enough to matter, but they still bring different exposures to a portfolio. The overlap is concentrated in holdings such as MSFT, GOOGL, and AAPL, which explains why the score lands at 22.69%.

02

How They Differ

DIA is an industrials ETF from SPDR, while IWF is a U.S. growth equity ETF from IShares. IWF is the broader fund, while DIA is the more targeted sleeve. DIA has the lower expense ratio, while IWF charges more for its exposure.

03

What Drives The Overlap

The overlap is driven by a relatively small set of large shared positions. The top three shared holdings account for 54.93% of the score, which means the result is heavily influenced by the biggest common weights rather than a long tail of tiny positions.

04

When One May Fit Better

If you want the broader portfolio building block, IWF is usually the wider choice. If you want the more focused tilt, DIA is the narrower expression. DIA has the lower expense ratio, while IWF charges more for its exposure.

Overlap Driver Snapshot

Concentration

The top three shared holdings explain 54.93% of the full overlap score.

That helps show whether the score comes from a handful of giant shared positions or from a broader mix of common holdings.

Shared Sector Tilt

Sector tags are not consistently available for the biggest shared positions in this dataset, so this comparison leans more on the specific holdings than on sector labels.

Top Shared Holdings

These are the holdings contributing the most to the overlap score between DIA and IWF.

HoldingNameDIA Wt.IWF Wt.Overlap
MSFTMICROSOFT CORP5.56%8.82%5.56%
GOOGLALPHABET INC CL A3.80%3.54%3.54%
AAPLAPPLE INC3.37%11.64%3.37%
AMZNAMAZON.COM INC3.01%4.66%3.01%
NVDANVIDIA CORP2.40%12.92%2.40%
VVISA INC CLASS A SHARES4.01%1.84%1.84%
HDHOME DEPOT INC3.91%0.90%0.90%
KOCOCA COLA CO/THE0.95%0.52%0.52%
AMGNAMGEN INC4.57%0.50%0.50%
SHWSHERWIN WILLIAMS CO/THE4.02%0.24%0.24%

Why These ETFs Overlap

DIA is an industrials ETF from SPDR, while IWF is a U.S. growth equity ETF from IShares. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are MSFT, GOOGL, and AAPL, which appear in both portfolios and push the overlap score higher.

Holding both DIA and IWF can still be reasonable, but you should expect some duplication. The decision comes down to whether the non-overlapping parts of each ETF are important enough for your strategy.

Related Comparisons

AGG vs DIA->AGG vs IWF->BND vs DIA->BND vs IWF->

Frequently Asked Questions About DIA and IWF

What is the overlap between DIA and IWF?+
DIA and IWF currently show an estimated weighted overlap of 22.69% based on the loaded holdings data.
How many holdings do DIA and IWF share?+
They share 18 holdings in the current dataset.
Is the DIA and IWF overlap high?+
The current verdict is Moderate Overlap. That means the two ETFs have noticeable duplication in portfolio weight.
Why do DIA and IWF overlap?+
DIA and IWF overlap because the same large positions appear in both funds. In this comparison, the top three shared holdings explain 54.93% of the measured overlap score.
Which ETF is broader, DIA or IWF?+
IWF is the broader fund, while DIA is the more targeted sleeve. That does not automatically make one better, but it helps explain why the pair can overlap while still serving different roles.

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How Overlap Is Calculated

A straightforward approach used by portfolio analysts.

Overlap = sum(min(Weight_A, Weight_B)) for each shared holding

For every stock that appears in both ETFs, we take the smaller of the two weights. Adding up all those minimums gives the total overlap percentage. A score of 100% means the two ETFs hold the exact same stocks in the same proportions.

Want the full explanation? Read the methodology page.

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