ETF Copilot

CATH vs IYY: holdings overlap, shared companies and scores

As of October 9, 2026, CATH and IYY overlap 80.9% by weight. Global X S&P 500 Catholic Values ETF (CATH): S&P 500 with Catholic values. iShares Dow Jones U.S. ETF (IYY): U.S. large- and mid-cap stocks.

Updated October 9, 2026

Where CATH and IYY trade against their own history

CATH trades at 24.3 times earnings, against its own median of 22.3, and is more expensive than 60% of its own last 9 years.

IYY trades at 24.5 times earnings, against its own median of 22.4, and is more expensive than 63% of its own last 9 years.

What moved CATH and IYY this week

CATH rose 1.2% in the week to October 9, 2026. The holdings that moved it most were Microsoft (+3.4%), Amazon.com (+4.3%) and Palantir Technologies (+10.8%); Nvidia (−2.0%) pushed the other way.

IYY rose 1.1% in the week to October 9, 2026. The holdings that moved it most were Microsoft (+3.4%), Amazon.com (+4.3%) and Alphabet (+2.4%); Nvidia (−2.0%) pushed the other way.

What do CATH and IYY each hold?

What's inside CATH: Tech 45%, Magnificent 7 36%.

41% of CATH is its ten largest holdings.

What's inside IYY: Tech 45%, Magnificent 7 33%.

37% of IYY is its ten largest holdings.

How much do CATH and IYY overlap? 80.9% by weight

As of October 9, 2026, CATH and IYY overlap 80.9% by weight.

100% of CATH is already inside IYY.

81% of IYY is already inside CATH.

CATH holds 444 companies and IYY holds 941; 444 are in both.

Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.

How does ETF Copilot score CATH and IYY? 6.8 and 6.7 out of 10

As of October 9, 2026, ETF Copilot scores CATH 6.8 out of 10 and IYY 6.7 out of 10.

They differ most on Value: CATH 4.2 and IYY 2.9.

The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.

CATH vs IYY — ETF Copilot factor scores, 0–10
FactorCATHIYY
Growth7.77.5
Value4.22.9
Risk5.76.4
Quality8.68.1
Return7.47.8

IYY is the cheaper of the two at 0.20% a year

As of October 9, 2026, CATH charges 0.29% a year, yields 0.73% and holds $1.4B in assets across 444 positions.

As of October 9, 2026, IYY charges 0.20% a year, yields 0.85% and holds $3.1B in assets across 941 positions.

CATH vs IYY — cost, income and size
MeasureCATHIYY
Expense ratio0.29%0.20%
Dividend yield0.73%0.85%
Assets under management$1.4B$3.1B
Holdings444941

Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.

Cite this

ETF Copilot, “CATH vs IYY holdings overlap and scores”, as of October 9, 2026.
https://etf-copilot.com/compare/cath-vs-iyy

  1. Global X S&P 500 Catholic Values ETF (CATH)
  2. iShares Dow Jones U.S. ETF (IYY)

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