Most ETF portfolios are 60–80% duplicated without investors realising it. Check your actual overlap in 30 seconds — free, no signup, works for UCITS & US ETFs.
Select 2–5 ETFs from your portfolio. We'll show you the exact overlap and what a simplified equivalent looks like.
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Overlap calculated using weight-adjusted methodology: Σ min(weightA, weightB) for all shared holdings. Holdings data sourced from Vanguard, iShares, Amundi, Schwab, Invesco, and BetaShares (Q1 2026). Data is approximate and may not reflect the most current holdings or weights. Fund-of-funds (e.g. DHHF) are expanded using proxy data which may introduce minor inaccuracies. The simplified portfolio suggestions are for educational purposes only and do not constitute financial advice. Always consult a qualified financial adviser before making investment decisions. airiya.org accepts no liability for any loss arising from the use of this tool.
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This tool was created after analysing 40+ investor community threads. Portfolio overlap was the #4 most common pain point — and the most fixable.
Pick 2–5 ETFs from your current portfolio. Supports all major US ETFs, UCITS products for EU investors, and ASX-listed funds.
We calculate weight-adjusted overlap: for each shared stock, we take the smaller weight between the two ETFs and sum them up. This shows how much of your money is truly duplicated.
We show you a 1–2 ETF equivalent that captures 95%+ of your current exposure — with lower fees and zero redundancy.
The ETF Overlap Checker was built from a full market research project. We do the same — start to finish — for any product, market, or industry you're targeting.