VB vs VUAA overlap

3.1% by weight, as of September 30, 2026: little overlap. 131 companies appear in both funds; they make up 23% of VB and 3.1% of VUAA.

The largest shared positions are MRNA, P, ILMN, FLEX and EME. 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 $3 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 1,170 names only in VB, 372 only in VUAA. Half in each behaves like 162 equally weighted stocks, against 674 for VB alone and 43 for VUAA alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

VUAA is Vanguard S&P 500 UCITS ETF (USD) Accumulating (ISIN IE00BFMXXD54), an Irish-domiciled UCITS fund on the S&P 500 index. Next to VB, 3.1% of the money is the same, spread over 131 companies both hold, as of September 30, 2026.

Yes. VUAA also trades as VUAG (London, GBP), and VUSA (ISIN IE00B3XXRP09) is its distributing share class. Each is the same portfolio in another currency, on another exchange or paying its dividends out, so VB vs VUAG also overlaps 3.1%.

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 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.