PortfolioAutopsy vs Portfolio Visualizer and testfolio
All three tools show how a portfolio behaved in the past. They answer different questions. Portfolio Visualizer and testfolio are backtesting workbenches. PortfolioAutopsy is a quick risk check for the mix you already own, built around the worst case.
| Feature | PortfolioAutopsy | Portfolio Visualizer | testfolio |
|---|---|---|---|
| Price | Free, no paid tier | Free tier, paid plans from $30 a month | Free |
| Account needed | No | For paid plans | See their site |
| Free history | Back to 1999 on 1,314 tickers | Users report free backtests capped at 10 years since 2024 | See their site |
| Upload a Schwab, Fidelity or Vanguard file | Yes | See their site | See their site |
| Crash replays using only data from before each crash | Yes, 4 cases | Not that we found | Not that we found |
| Pre-sale check with a 24-hour pause | Yes | Not that we found | Not that we found |
| Optimization, factor regressions, Monte Carlo | No | Yes | See their site |
| Rebalancing and cash-flow modeling | No | Yes | Yes |
Competitor details come from public sources listed below and can change. Check each site before you rely on them.
Pick Portfolio Visualizer when
You want optimization, factor regressions or Monte Carlo retirement projections, and you are happy to pay for longer history.
Pick testfolio when
You want to model rebalancing rules or cash flows and compare allocations side by side for free.
Pick PortfolioAutopsy when
You want to paste your broker export and see the worst 12 months hiding in your exact mix, your odds of losing money over one, three and five years, and how the same mix would have looked going into 2008, 2020 and 2022. It takes about a minute, there is no account, and your amounts stay on your device.
Run a free risk checkBrowse the drawdown table
Questions
Is there a free alternative to Portfolio Visualizer?
Yes. PortfolioAutopsy is free with no account and uses daily data back to 1999 for 1,314 stocks, ETFs and mutual funds. testfolio is another free backtesting site. Portfolio Visualizer still has a free tier, with paid plans from $30 a month.
Which tool should I use for backtesting rebalancing rules?
Portfolio Visualizer or testfolio. PortfolioAutopsy applies today’s weights to history and focuses on how far your mix can fall, so it does not model rebalancing schedules or cash flows.
Does PortfolioAutopsy see my holdings?
No. The math runs in your browser. The site sends public price files for the tickers you enter, and your dollar amounts never leave your device.
Sources
- Rob Berger, Portfolio Visualizer review (free tier and $30 or $55 monthly plans)
- Early-Retirement.org thread on Portfolio Visualizer’s free tier (10-year cap reported in 2024)
- Kiplinger, 5 Great Tools for DIY Stock Investors (Portfolio Visualizer’s optimization and Monte Carlo tools)
- testfolio (backtests, allocation comparisons, rebalancing and cash flows)