VO vs IWDA overlap

12% by weight, as of September 30, 2026: light overlap. 263 companies appear in both funds; they make up 98% of VO and 12% of IWDA.

The largest shared positions are MPC, VLO, NEM, PSX and FTNT. 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 $12 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 8 names only in VO, 985 only in IWDA. Half in each behaves like 222 equally weighted stocks, against 206 for VO 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 VO, 12% of the money is the same, spread over 263 companies both hold, as of September 30, 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 VO vs EUNL also overlaps 12%.

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 Vanguard 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.