IGV vs MGK Overlap

IGV is a technology-focused equity ETF from IShares, while MGK is a U.S. growth equity ETF from Vanguard. IGV and MGK show limited overlap, with an estimated weighted overlap of 17.91%. They share 16 holdings in the loaded dataset, led by MSFT, PLTR, and ORCL.

17.9% overlap
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16Shared Holdings
OK
Low Overlap

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Quick Answer

IGV is a technology-focused equity ETF from IShares, while MGK is a U.S. growth equity ETF from Vanguard. IGV and MGK show limited overlap, with an estimated weighted overlap of 17.91%. They share 16 holdings in the loaded dataset, led by MSFT, PLTR, and ORCL.

  • 17.91% weighted overlap across 16 shared holdings.
  • The top three shared holdings explain 64.73% of the measured overlap.
  • IGV and MGK are closer in breadth than a broad-vs-niche ETF pair.
  • The overlap is mostly explained by the top shared positions rather than sector labels alone.
  • Holding both can still add materially different exposure.

Data Freshness

IGV holdings
Mar 12, 2026
MGK holdings
Mar 12, 2026
Overlap computed
Mar 15, 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

IGV

iShares Expanded Tech-Software Sector ETF

Issuer
IShares
Asset class
Equity
Expense ratio
0.39%
AUM
$11B
Inception
Jul 10, 2001

ETF B

MGK

Vanguard Mega Cap Growth ETF

Issuer
Vanguard
Asset class
Large Cap Equity
Expense ratio
0.05%
AUM
$32B
Inception
Dec 17, 2007

What Stands Out In This Comparison

01

What This Means

IGV is a technology-focused equity ETF from IShares, while MGK is a U.S. growth equity ETF from Vanguard. IGV and MGK do not own much of the same portfolio weight. That usually means you are combining different parts of the market, with only a small amount of duplication through names like MSFT, PLTR, and ORCL.

02

How They Differ

IGV is a technology-focused equity ETF from IShares, while MGK is a U.S. growth equity ETF from Vanguard. Neither fund clearly dominates on breadth, so the practical difference is more about weighting, index construction, and cost. MGK has the lower expense ratio, while IGV 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 64.73% 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

Because IGV and MGK are closer in breadth, the better fit usually comes down to index methodology, issuer preference, and cost. MGK has the lower expense ratio, while IGV charges more for its exposure.

Overlap Driver Snapshot

Concentration

The top three shared holdings explain 64.73% 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 IGV and MGK.

HoldingIGV Wt.MGK Wt.Overlap
MSFT9.22%9.61%9.22%
PLTR8.75%1.25%1.25%
ORCL7.29%1.12%1.12%
CRM7.29%0.82%0.82%
INTU4.97%0.63%0.63%
PANW5.27%0.60%0.60%
ADBE4.61%0.59%0.59%
NOW3.93%0.56%0.56%
APP5.07%0.54%0.54%
CRWD4.38%0.54%0.54%

Why These ETFs Overlap

IGV is a technology-focused equity ETF from IShares, while MGK is a U.S. growth equity ETF from Vanguard. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are MSFT, PLTR, and ORCL, which appear in both portfolios and push the overlap score higher.

Holding both IGV and MGK can make sense if you want exposure to different sleeves of the market. The overlap is small enough that both funds may still improve diversification.

Related Comparisons

Frequently Asked Questions About IGV and MGK

What is the overlap between IGV and MGK?+
IGV and MGK currently show an estimated weighted overlap of 17.91% based on the loaded holdings data.
How many holdings do IGV and MGK share?+
They share 16 holdings in the current dataset.
Is the IGV and MGK overlap high?+
The current verdict is Low Overlap. That means the two ETFs have limited duplication in portfolio weight.
Why do IGV and MGK overlap?+
IGV and MGK overlap because the same large positions appear in both funds. In this comparison, the top three shared holdings explain 64.73% of the measured overlap score.
Which ETF is broader, IGV or MGK?+
IGV and MGK look closer in breadth than a broad-vs-niche pair, so the main difference is more about strategy and weighting than simple market coverage.

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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