Backtester

How it works

Pick or build a strategy

Start from one of 10 prebuilt samples or define your own entry and exit conditions from 124+ indicators.

Choose universe & rules

S&P 500, Russell 2000, NASDAQ, or your own custom ticker list. Set stop loss, take profit, position sizing.

Get full results

Returns, Sharpe, drawdown, win rate, trade-by-trade analysis, benchmark comparison. Export to Excel.

How conditions work

Entry conditions are joined by AND — every condition listed must be true on the same day for a buy signal to fire. If you require "RSI below 30" plus "P/E below 15", a stock needs both at today's close to be entered tomorrow morning.

Exit conditions default to OR — any single condition triggers an exit — but you can switch to AND in the exit-logic toggle. Common exits are indicator-based ("RSI above 70"), time-based ("held for 20 days"), or fundamental shifts ("EPS growth below 5%").

Order execution timing

Signals fire at end of day when the engine scans every stock in your universe against today's full daily bar. Buy and sell orders execute at next day's open, modeling the fact that you can't act on today's close until tomorrow.

Stop loss and take profit are the exception — they trigger intraday at the exact price level, not at next morning's open. A 5% stop loss on a $100 entry exits the moment price touches $95, regardless of when in the session that happens.

Position sizing & cash

Each trade uses up to your Position Size in dollars. A new position only opens when available cash covers the full position size — no fractional positions filling slots with leftover cents.

As a strategy closes profitable trades, cash grows and can fund additional concurrent positions. This is how a profitable strategy compounds — the max number of concurrent positions isn't capped, just gated by cash.

Indicators & custom conditions

Over 124 built-in indicators cover price action (SMA, EMA, RSI, MACD, Bollinger), volume, volatility, valuation (P/E, PEG, EV/EBITDA), income statement, balance sheet, cash flow, profitability, and analyst sentiment.

You can also describe a condition in plain English and the engine will interpret it via AI into a sandboxed Python function — useful for ideas that don't fit a single off-the-shelf indicator.

Universe

Select which stocks to backtest against

Universe

Sector

Date Range

Entry Conditions

Define when to open a position. All conditions must be met.

Exit Conditions

Define when to close a position. Any condition triggers an exit.

Risk Management

Optional stop loss and take profit levels

Stop Loss

Trailing stop loss

Take Profit

Portfolio

Configure portfolio sizing and position limits

Position Size

Dollar amount per trade (whole shares)

Starting Capital

Total cash available for the backtest

Benchmark

Allow accumulation (add to existing positions when entry conditions fire again)

How it works

Pick or build a strategy

Choose universe & rules

Get full results

How conditions work

Order execution timing

Position sizing & cash

Indicators & custom conditions

Universe

Entry Conditions

Exit Conditions

Risk Management

Portfolio

Backtest Results

Performance by Sector & Industry

How it works

Pick or build a strategy

Choose universe & rules

Get full results

How conditions work

Order execution timing

Position sizing & cash

Indicators & custom conditions

Universe

Entry Conditions

Exit Conditions

Risk Management

Portfolio

Running Backtest…

Backtest Results

Performance by Sector & Industry