etf overlap tool · moderate overlap
ITOT vs CNDX overlap
97% of CNDX's money sits in companies ITOT also holds; 49% of the two funds is the same money, spread over 92 companies both hold.
Holdings as of October 16, 2026 · source: iShares (ITOT), iShares (CNDX) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Hold ITOT and CNDX with other funds or stocks? The free portfolio optimizer opens ITOT and CNDX beside the rest of what you own: the companies you hold twice, what the funds cost a year, and where the next deposit should go. No account.
The companies you would own twice
What only one of them gives you
SHOPSHOPIFY SUBORDINATE VOTING CLASS A0.90%Where each fund puts its money
ITOT and CNDX: what people ask
How much do ITOT and CNDX overlap?
49% by weight, as of October 16, 2026: moderate overlap. 92 companies appear in both funds; they make up 49% of ITOT and 97% of CNDX.
Which stocks do ITOT and CNDX both hold?
The largest shared positions are NVDA, AAPL, MSFT, AMZN and GOOGL. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both ITOT and CNDX?
Out of every $100 split evenly between them, about $49 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 2,331 names only in ITOT, 9 only in CNDX. Half in each behaves like 43 equally weighted stocks, against 56 for ITOT 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 ITOT?
CNDX is iShares Nasdaq 100 UCITS ETF (ISIN IE00B53SZB19), an Irish-domiciled UCITS fund on the Nasdaq-100 index. Next to ITOT, 49% of the money is the same, spread over 92 companies both hold, as of October 16, 2026.
Does the ITOT 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 ITOT vs SXRV also overlaps 49%.
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 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.
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.