ARKK vs CNDX overlap

22% by weight, as of September 25, 2026: light overlap. 13 companies appear in both funds; they make up 38% of ARKK and 34% of CNDX.

The largest shared positions are TSLA, AMD, SPCX, META and NVDA. Ranked by the smaller of the two weights, which is the part you would own twice.

Out of every $100 split evenly between them, about $22 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 32 names only in ARKK, 88 only in CNDX. Half in each behaves like 44 equally weighted stocks, against 27 for ARKK alone and 31 for CNDX alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

CNDX is iShares Nasdaq 100 UCITS ETF (ISIN IE00B53SZB19), an Irish-domiciled UCITS fund on the Nasdaq-100 index. Next to ARKK, 22% of the money is the same, spread over 13 companies both hold, as of September 25, 2026.

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 ARKK vs SXRV also overlaps 22%.

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 ARK Invest 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.