FundBlender lets you x-ray your ETF and stock portfolios to see what you truly own underneath. It aggregates every underlying holding across all your funds, reveals hidden overlap, highlights concentration risk, and shows your real sector and country exposure. All in one view.

Any self-directed investor who holds ETFs, whether in a brokerage account, 401(k), IRA, or a combination. If you own more than one fund, FundBlender helps you understand how they fit together.

Your broker shows you which ETFs you hold. FundBlender shows you the thousands of individual stocks inside those ETFs, de-duplicated and weighted across your entire portfolio. For example, you might discover you hold NVDA through four different funds at a combined 19% weight. No brokerage dashboard will tell you that.

No. FundBlender never asks for brokerage logins, bank credentials, or account numbers. You simply enter the ETFs and stock tickers you hold and their approximate weights. Your data stays under your control.

The X-ray takes every ETF in your portfolio, looks up its underlying holdings, and aggregates them into a single view. You can see your true exposure by stock, by sector, or as a visual treemap, so you can instantly spot where concentration risk is hiding.

The Strategy Lab lets you backtest investment strategies using real historical data. Compare lump-sum vs. dollar-cost averaging, try different contribution amounts and frequencies, and see exactly how each approach would have played out over time.

Search any ETF to see its full holdings, sector breakdown, risk profile, and compare two ETFs head-to-head. It shows shared holdings, overlap percentage, and sector differences at a glance.

Market data (quotes, historical prices, and ETF holdings) is refreshed throughout the trading day. Holdings composition data is updated as fund providers publish changes, typically daily or weekly depending on the ETF.

For major ETFs like VTI, VOO, and QQQ, historical price data goes back 20+ years. The exact range depends on when the ETF was launched and when data coverage began.

Yes. The free plan includes one portfolio with up to three positions, full X-ray and risk analysis, a holding returns heatmap, and up to three years of strategy backtesting. No credit card required.

Pro ($8/month) adds more portfolios, unlimited positions, 10-year scenario backtesting, dividend income tracking, portfolio comparison, shareable links, and full ETF explorer history. Premium ($16/month) unlocks 20+ year backtesting, up to 15 portfolios, unlimited sharing, and priority support. See full plan details.

Yes. You can cancel or downgrade at any time with no notice period. Your paid features remain active until the end of your current billing cycle, after which your account moves to the free plan. We do not offer partial refunds for unused time.

All traffic uses TLS 1.3 encryption. Our servers are hosted in Europe under GDPR protections, with data encrypted at rest. We support sign-in via Google OAuth, so no passwords are stored on our servers. Read more on our security page.

No. We do not sell, share, or monetise your data in any way. See our privacy policy for details.

Your email address (for authentication), the portfolio definitions you create (tickers and weights), and your preferences. We do not store brokerage credentials, bank details, or account balances.