Random Walk Index (RWI) Indicator Explained

The Random Walk Index (RWI) asks the statistician's question: is this move bigger than a random walk would produce? It compares price displacement to the ATR-scaled range expected from randomness — RWI High above 1 means the upmove is statistically real.

How It Works

• RWI High = (high − low N bars ago) ÷ (ATR × √N); RWI Low mirrors for downmoves.
• √N is the random-walk scaling — displacement beyond it implies genuine trend.
• Readings above 1.0 reject the randomness hypothesis for that direction.

How to Trade It

Trade only when the relevant RWI exceeds 1 (the move is non-random), and prefer crossovers where RWI High overtakes RWI Low as trend-flip confirmation. It's a rigorous filter for markets where you suspect most 'signals' are noise.

Building It in Setup.Cash

Add Random Walk Index (RWI) in the strategy builder — the length input controls its sensitivity — and use its value in any entry, exit, or filter condition. You can also combine it with other tools in the Indicators Lab or via the AI indicator generator. See CTI for the correlation-based cousin. For the full category overview, see the volatility & statistics library guide.

Volatility indicators qualify trades rather than generate them — backtest your system with and without this filter and compare the drawdowns.