IJR vs VXF Overlap

IJR is a small-cap U.S. equity ETF from IShares, while VXF is an equity ETF from Vanguard. IJR and VXF show limited overlap, with an estimated weighted overlap of 18.96%. They share 582 holdings in the loaded dataset, led by SOLS, MOG-A, and IDCC.

19.0% overlap
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582Shared Holdings
OK
Low Overlap

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Quick Answer

IJR is a small-cap U.S. equity ETF from IShares, while VXF is an equity ETF from Vanguard. IJR and VXF show limited overlap, with an estimated weighted overlap of 18.96%. They share 582 holdings in the loaded dataset, led by SOLS, MOG-A, and IDCC.

  • 18.96% weighted overlap across 582 shared holdings.
  • The top three shared holdings explain 1.79% of the measured overlap.
  • IJR and VXF 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

IJR holdings
Mar 12, 2026
VXF 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

IJR

iShares Core S&P Small-Cap ETF

Issuer
IShares
Asset class
Equity
Expense ratio
0.06%
AUM
$92B
Inception
May 22, 2000

ETF B

VXF

Vanguard Extended Market ETF

Issuer
Vanguard
Asset class
Mid Cap Equity
Expense ratio
0.05%
AUM
$84B
Inception
Dec 27, 2001

What Stands Out In This Comparison

01

What This Means

IJR is a small-cap U.S. equity ETF from IShares, while VXF is an equity ETF from Vanguard. IJR and VXF 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 SOLS, MOG-A, and IDCC.

02

How They Differ

IJR is a small-cap U.S. equity ETF from IShares, while VXF is an equity ETF from Vanguard. Neither fund clearly dominates on breadth, so the practical difference is more about weighting, index construction, and cost. IJR and VXF are priced very similarly on expense ratio.

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 1.79% 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 IJR and VXF are closer in breadth, the better fit usually comes down to index methodology, issuer preference, and cost. IJR and VXF are priced very similarly on expense ratio.

Overlap Driver Snapshot

Concentration

The top three shared holdings explain 1.79% 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 IJR and VXF.

HoldingIJR Wt.VXF Wt.Overlap
SOLS0.78%0.12%0.12%
MOG-A0.59%0.11%0.11%
IDCC0.62%0.11%0.11%
LKQ0.52%0.11%0.11%
CTRE0.59%0.10%0.10%
LUMN0.34%0.10%0.10%
JBTM0.48%0.10%0.10%
JXN0.18%0.10%0.10%
PRIM0.48%0.10%0.10%
AWI0.47%0.10%0.10%

Why These ETFs Overlap

IJR is a small-cap U.S. equity ETF from IShares, while VXF is an 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 SOLS, MOG-A, and IDCC, which appear in both portfolios and push the overlap score higher.

Holding both IJR and VXF 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 IJR and VXF

What is the overlap between IJR and VXF?+
IJR and VXF currently show an estimated weighted overlap of 18.96% based on the loaded holdings data.
How many holdings do IJR and VXF share?+
They share 582 holdings in the current dataset.
Is the IJR and VXF overlap high?+
The current verdict is Low Overlap. That means the two ETFs have limited duplication in portfolio weight.
Why do IJR and VXF overlap?+
IJR and VXF overlap because the same large positions appear in both funds. In this comparison, the top three shared holdings explain 1.79% of the measured overlap score.
Which ETF is broader, IJR or VXF?+
IJR and VXF 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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