ETF Overlap Checker

ETF comparison tool

Compare ETFs Side by Side

Compare ETF fees, holdings, issuers, categories, and portfolio overlap in one simple tool.

vs

338 ETFs tracked Issuer holdings snapshots Free, no signup required

Popular ETF comparisons

Explore commonly searched ETF matchups

Start with high-intent comparison pages and review fees, issuers, categories, shared holdings, and tracked overlap.

Example ETF comparison

VOO vs VTI

A quick preview of the full comparison page for S&P 500 and total U.S. stock market exposure.

View full VOO vs VTI comparison
VOO categoryUS Large Blend

Vanguard S&P 500 ETF

VTI categoryUS Total Market

Vanguard Total Stock Market ETF

Expense ratios0.03% / 0.03%

Vanguard vs Vanguard

Tracked overlap26.00%

8 shared holdings

ETF overlap checker

Check your ETF portfolio

100.0%
ETFAllocation

Free, no signup required. Email is optional.

Launch universe

Example report

VOO + QQQ can share more holdings than the fund names suggest.

The overlap checker rolls ETF holdings up to portfolio weights, so duplicated stocks are visible as one combined exposure.

Shared holdings11

VOO / QQQ

Tracked overlap29.2%

Pair comparison

Top duplicateMSFT

Combined exposure

How it works

From ticker pair to holdings-level overlap

Use the two-fund comparison first, then analyze your actual allocation when you own more than one ETF.

1. Enter two ETF tickersStart with a pair such as VOO and VTI.
2. Compare fund basicsReview issuer, category, expense ratio, and holdings date.
3. Analyze overlapSee shared holdings and tracked portfolio overlap.
4. Check allocation impactUse the portfolio tool to see duplicated exposure by weight.

ETF pages

Supported launch universe

These crawlable pages are entry points for ETF overlap searches and portfolio audit use cases.

Why overlap matters

Two funds can look different and still own the same stocks.

Many broad-market, growth, dividend, and sector ETFs share the same large holdings. Comparing two ETFs shows the overlap; analyzing your allocation shows how much duplicated exposure you actually own.

This ETF overlap checker combines your ETF weights and shows true top exposures, duplicated holdings, pairwise overlap, and concentration using the latest available holdings snapshot.

FAQ

ETF comparison and overlap questions

What is ETF overlap?

ETF overlap is the shared underlying exposure between funds. If two ETFs both hold the same stock, owning both may increase concentration rather than add as much diversification as expected.

Why check a full ETF portfolio instead of two funds?

Pairwise overlap can miss the combined effect of allocations. Portfolio-level analysis shows how much each underlying holding contributes after all ETF weights are rolled together.

What data does the app use?

The app stores holdings in local SQLite. The daily job prefers configured issuer official holdings files, falls back to Alpha Vantage when needed, and keeps SEC N-PORT as a validation/backfill path.