Why UCITS overlap matters
European investors often hold a "global" UCITS ETF (VWCE, IWDA, or VWRL) alongside a US or S&P 500 fund (VUAA, VUSA, or CSPX). On paper that is two or three funds. In practice, US mega-caps can appear in every sleeve, pushing true US technology exposure well above a simple allocation chart.
The main ETF overlap checker supports US-listed tickers today (VOO, QQQ, SCHD, and similar). This hub collects UCITS-specific guides and pair pages for investors on LSE, XETRA, Euronext and other European venues.
Dataset note: UCITS holdings are being added to Guardfolio's public overlap dataset. Pair pages below marked "coming soon" will go live as verified holdings ship. For connected accounts, Guardfolio already surfaces overlap from synced positions regardless of listing venue.
Popular UCITS overlap pairs
VWCE vs VUAA
Global all-cap vs US S&P 500 UCITS. High overlap in US mega-caps. Page coming soon.
IWDA vs EIMI
Developed world vs emerging markets. Lower overlap, but shared names at the margin. Page coming soon.
VWRL vs VUSA
UK-listed global vs US equity. Common ISA and SIPP combination. Page coming soon.
US tickers (QQQ vs VOO)
Reference example using US-listed ETFs while UCITS pair pages roll out.
Related tools
After overlap: monitor the full portfolio
Pairwise overlap is a starting point. Once accounts are connected, portfolio risk monitoring tracks overlap, concentration and drift continuously across every broker and wrapper. UK investors can start with the UK portfolio tracker guide.
For a broader international comparison of tools and regions, see best portfolio tracker for international investors.