etf overlap · little overlap

XLU vs CNDX overlap

1.1% of XLU and CNDX is the same money, spread over 4 companies both funds hold.

Holdings as of October 14, 2026 · source: SPDR (XLU), iShares (CNDX) · How we measured all 1,431 pairs

overlapfull holdings, by weight
1.1%of each fund is money the other holds at the same weight, across 4 shared companies.
XLU
18%81%
CNDX
99%
  • same money
  • same companies, extra weight
  • only in this fund
Overlap = the sum, over companies both funds hold, of the smaller of the two weights. Cash and derivatives excluded.
01Shared

The companies you would own twice

held by bothtop 4 of 4
companyXLUCNDX
CECEGCONSTELLATION ENERGY7.02%0.42%
EXELON CORP logoEXCEXELON CORP3.35%0.19%
02Different

What only one of them gives you

03Sectors

Where each fund puts its money

sectorsXLU vs CNDX, share of each fund
Utilities99.84%1.10%
Information Technology0.00%58.16%
Communication Services0.00%15.02%
Consumer Discretionary0.00%10.44%
Consumer Staples0.00%6.11%
Health Care0.00%4.25%
Industrials0.00%3.24%
Materials0.00%0.97%
Energy0.00%0.47%
Financials0.00%0.20%
04Questions

XLU and CNDX: what people ask

questions6 answered

How much do XLU and CNDX overlap?

1.1% by weight, as of October 14, 2026: little overlap. 4 companies appear in both funds; they make up 19% of XLU and 1.1% of CNDX.

Which stocks do XLU and CNDX both hold?

The largest shared positions are CEG, AEP, XEL and EXC. Ranked by the smaller of the two weights, which is the part you would own twice.

Is it redundant to hold both XLU and CNDX?

Out of every $100 split evenly between them, about $1 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 27 names only in XLU, 97 only in CNDX. Half in each behaves like 48 equally weighted stocks, against 20 for XLU alone and 31 for CNDX alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

What is CNDX, next to XLU?

CNDX is iShares Nasdaq 100 UCITS ETF (ISIN IE00B53SZB19), an Irish-domiciled UCITS fund on the Nasdaq-100 index. Next to XLU, 1.1% of the money is the same, spread over 4 companies both hold, as of October 14, 2026.

Does the XLU vs CNDX overlap apply to other tickers?

Yes. CNDX also trades as CNX1 (London, GBP), SXRV (Xetra, EUR) and CSNDX (Borsa Italiana, EUR). Each is the same portfolio in another currency, on another exchange or paying its dividends out, so XLU vs SXRV also overlaps 1.1%.

How is ETF overlap calculated here?

For every company held by both funds we take the smaller of its two weights and add them up. The weights come from the full holdings files SPDR and iShares publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart. Sector overlap applies the same rule to the issuers' sector labels; "behaves like N equally weighted stocks" is one over the sum of the squared weights.

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Weights come from each issuer's published holdings file and are matched company by company on their ISIN. Cash, futures and currency positions are left out. This page describes what the funds hold; it is not investment advice.