Rolling Median Indicator Explained

The Rolling Median takes the middle value of the window instead of the average. One flash-crash bar drags an SMA for its entire length; the median simply ignores it. It's the most robust 'where has price really been?' line available.

How It Works

• The middle value of the sorted last N closes, each bar.
• Outliers have zero pull until they become the majority.
• Steps rather than glides, like other order-statistic lines.

How to Trade It

Use median as the baseline on flash-crash-prone symbols (price vs median crosses stay honest through bad ticks), or watch the SMA-median gap: when the average pulls far from the median, recent movement is outlier-driven — treat signals with suspicion.

Building It in Setup.Cash

Add Rolling Median 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. The Rolling Quantile generalizes this to any percentile. 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.