RSP vs CNDX overlap

17% by weight, as of October 14, 2026: light overlap. 86 companies appear in both funds; they make up 17% of RSP and 93% of CNDX.

The largest shared positions are MRNA, SNPS, CRWD, DDOG and ISRG. 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 $17 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 419 names only in RSP, 15 only in CNDX. Half in each behaves like 107 equally weighted stocks, against 498 for RSP 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 RSP, 17% of the money is the same, spread over 86 companies both hold, as of October 14, 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 RSP vs SXRV also overlaps 17%.

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 Invesco 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.