Make Smarter ETF DecisionsWith Data, Not Guesswork

Compare holdings overlap, analyze correlations, and find hidden risks in your portfolio. 248+ ETFs analyzed with daily-updated data. No sign-up required.

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248+
ETFs Analyzed
6,993
Comparison Pages
5yr
Historical Data
Daily
Price Updates

Popular Comparisons

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SPYvsVOO99.8%
S&P 500: SPDR vs Vanguard
SPYvsQQQ56%
S&P 500 vs Nasdaq-100
VTIvsVOO82%
Total Market vs S&P 500
QQQvsVGT48%
Nasdaq-100 vs Tech Sector
SCHDvsVYM38%
High Dividend Champions
AGGvsBND72%
Bond Market: iShares vs Vanguard
EFAvsVEA89%
International Developed Markets
VOOvsIVV99.9%
S&P 500: Vanguard vs iShares

Complete ETF Analysis Toolkit

Six powerful tools to help you understand what you own, reduce overlap, and build a better portfolio.

ETF Overlap Analyzer

248+ ETFs

See exactly how much two ETFs share in common. Discover hidden redundancy in your portfolio.

Correlation Finder

5yr data

Build a truly diversified portfolio by discovering which ETFs move together — and which don't.

Expense Calculator

30yr projection

That tiny fee could cost you $45,000+. See the real impact of expense ratios over time.

Sector X-Ray

11 sectors

Think you're diversified? See your true sector concentration across all your ETF holdings.

Dividend Optimizer

Yield analysis

Holding multiple dividend ETFs? Find overlapping holdings and optimize your yield.

ETF Rankings

Data-driven

Side-by-side rankings by performance, risk, cost, and overall score across all categories.

How It Works

1

Choose Your ETFs

Select any two ETFs from our database of 248+ funds covering all major categories.

2

Get Instant Analysis

See overlap percentage, shared holdings, correlation, risk metrics, and performance comparison.

3

Make Better Decisions

Reduce portfolio redundancy, lower costs, and build truly diversified investments.

Browse by Category

Large Cap50+ ETFs
SPYVOOQQQDIA
Total Market15+ ETFs
VTIIWMITOT
Sectors40+ ETFs
XLKXLFXLVXLE
International30+ ETFs
EFAVEAEEMVWO
Bonds25+ ETFs
AGGBNDTLTSCHZ
Growth20+ ETFs
VUGARKKQQQM
Value15+ ETFs
VTVSCHDDVY
Dividend20+ ETFs
SCHDVYMJEPI

Latest Research

All articles →
research8 min read

S&P 500 Sector Weights 2026: What Every ETF Investor Needs to Know

The S&P 500 sector breakdown has shifted dramatically. Technology now exceeds 32% — creating hidden concentration risk for SPY, VOO, and QQQ investors. Here's how to analyze and manage it.

strategy6 min read

How to Reduce ETF Overlap in Your Portfolio (2026 Guide)

ETF overlap is silently concentrating your portfolio. Learn how to identify dangerous overlap, which ETF pairs to avoid, and how to build a genuinely diversified portfolio.

strategy8 min read

ETF Correlation Explained: Build a Portfolio That Actually Diversifies

Learn how ETF correlation works, why it matters more than overlap, which ETF combinations truly diversify your portfolio, and how to measure correlation across your holdings.

Weekly ETF Insights

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Methodology

Overlap Calculation

Weighted intersection using the minimum weight method:

overlap% = Σ min(weight_A, weight_B)

Correlation Analysis

Pearson correlation coefficient on adjusted daily close prices. 5 years of historical data from Yahoo Finance.

Data Sources

Holdings from public issuer files (iShares, Vanguard, SPDR). Prices from Yahoo Finance, updated daily.

Disclaimer: Educational tool only. Holdings data may not be current. Not financial or investment advice.