Analytics & Data
ETF Overlap Tool
Free ETF overlap calculator comparing actual holdings from SEC filings and issuer data
- 0community votes
- 1DR by Ahrefs no change since last check
Ahrefs Domain Rating listed 6 Nov 2026, relisted 27 Oct 2026.
ETF Overlap Tool compares the published holdings of exchange-traded funds to show investors how much their ETFs actually overlap in real holdings.
What it is
ETF Overlap Tool: the homepage
ETF Overlap Tool is an independent resource that helps investors understand how much their ETFs have in common by comparing actual holdings line by line. The tool analyzes 80 US-listed and UCITS ETFs using data from SEC EDGAR filings and direct issuer feeds, updated daily.
For any two ETFs, it calculates both weight overlap (the share of portfolio money in the same securities) and count overlap (the number of shared holdings). The tool shows which companies the funds share, their sector tilts, and concentration in top positions.
The service includes multiple tools: a pair overlap calculator, multi-ETF compare for up to five funds, an ETF directory with profiles and holdings tables, guides on how overlap is measured, a glossary of terms, and complete methodology documentation. All data sources and calculation methods are publicly documented.
Listed capabilities
- Compare two ETFs for weight and count overlap
- Multi-ETF compare tool for up to five ETFs
- 80 ETFs available including US-listed and UCITS
- Holdings data updated daily from SEC filings and issuer feeds
- Sector breakdown and concentration analysis
- ETF directory with profiles and holdings tables
- Educational guides and methodology documentation
Pricing
Pricing model: Free
Follow ETF Overlap Tool for an email about each milestone, update and new product they post, in a daily summary.
ETF Overlap Tool metrics
| Metric | Value |
|---|---|
| Domain Rating | 1 no change since last check |
| Trust Flow | 1 no change since last check |
| Citation Flow | 12 no change since last check |
| Referring domains | 6 no change since last check |
| External backlinks | 14 no change since last check |
Ahrefs Domain Rating listed 6 Nov 2026, relisted 27 Oct 2026. Listed under topic: Business/Financial Services (1). Majestic listed 27 Oct 2026, relisted 27 Oct 2026. Link data listed by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
ETF Overlap Tool domain listing data
Show the listing data
| Domain age | 5 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Hetzner Online GmbH |
| DNSSEC | Not signed |
ETF Overlap Tool launch receipt entry
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 1 to 1 no change since launch 27 Oct 2026, then 5 Nov 2026 |
| Trust Flow (Majestic) | 1 first measured 27 Oct 2026 |
| Referring domains (Majestic) | 6 first measured 27 Oct 2026 |
Day 10 since launch. Next receipt: day 30, 26 Nov 2026. We show what changed, not what caused it: many things affect these numbers. Nothing here is estimated.
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Quick answers
What does weight overlap mean?
Weight overlap is the share of a portfolio that would be invested identically in both funds. For each security held by both funds, the smaller of the two position weights is taken and added together.
What does count overlap mean?
Count overlap is the number of securities held by both funds divided by the total number of distinct securities held by either fund, expressed as a percentage. It ignores position size and answers how many of the same holdings two funds share.
How often is the holdings data updated?
Issuer files are checked every day. However, the holdings dates vary by fund and source, ranging from monthly for Vanguard UCITS funds to the latest files which are from October 26, 2026.
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ETF Overlap Tool has a free listing. The owner can unlock the full profile with a paid launch for $5:
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