DIA vs IWDA overlap

24% by weight, as of September 24, 2026: light overlap. 30 companies appear in both funds; they make up 100% of DIA and 28% of IWDA.

The largest shared positions are MSFT, AAPL, AMZN, NVDA and GOOGL. 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 $24 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 0 names only in DIA, 1,218 only in IWDA. Half in each behaves like 50 equally weighted stocks, against 21 for DIA alone and 83 for IWDA alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

IWDA is iShares Core MSCI World UCITS ETF (ISIN IE00B4L5Y983), an Irish-domiciled UCITS fund on the MSCI World index. Next to DIA, 24% of the money is the same, spread over 30 companies both hold, as of September 24, 2026.

Yes. IWDA also trades as SWDA (London, GBP; Borsa Italiana, EUR) and EUNL (Xetra, EUR). Each is the same portfolio in another currency, on another exchange or paying its dividends out, so DIA vs EUNL also overlaps 24%.

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.