Stax Labs
Stock Backtesting Tool for Rule-Based Investors
Backtesting turns a market opinion into evidence. Stax helps you define the rules, run the historical simulation, and inspect the trade-by-trade behavior so you can improve the strategy before it becomes a real decision.
What users get
- Historical lens
- 5 years
- Universe
- 5,000+ stocks
- Output
- Trades, equity, risk
The job it solves
Build investing rules, test them against historical market data, and understand return, drawdown, Sharpe ratio, trades, and risk before you act.
Built for the actual investing workflow
Stax is strongest when a visitor can move from learning to building to testing without switching tools or losing the original idea.
Test whether a stock strategy would have survived different market regimes.
Compare return against drawdown so a high return does not hide fragile risk.
See the actual buy and sell history instead of trusting a single headline number.
Move from spreadsheet guessing to a repeatable investing process.
How it works
A practical path from an idea to evidence, then from evidence to practice.
- 1
Choose the universe, filters, ranking rules, position sizing, and risk settings.
- 2
Run the strategy across historical daily market data with next-day execution assumptions.
- 3
Review total return, Sharpe ratio, max drawdown, win rate, trades, and equity curve.
- 4
Adjust the rules, save the strategy, then paper trade before risking real money.
Designed for non-coders who still want transparent, rule-based investing logic.
Explains the strategy behavior in plain language, not only charts and ratios.
Connects backtesting directly to paper trading and live signal monitoring.
Learn the concepts behind the tool
Start with a template
Questions people ask
What is stock backtesting?
Stock backtesting is the process of running a set of investing rules against historical market data to see how the strategy would have behaved in the past.
Does a good backtest guarantee future returns?
No. A backtest is evidence, not a promise. It helps reveal risk, fragility, and historical behavior, but future markets can behave differently.
Who should use a backtesting tool?
Anyone who has an investing idea and wants to test the rules before making live decisions. It is especially useful for beginners who need structure and experienced investors who want repeatability.
Ready to use stock backtesting tool for rule-based investors?
Start with a clear idea, test the rules, and keep the risk visible before the decision gets emotional.