NR7 narrow range
A bar with the smallest high-to-low range of the last seven bars.
What it shows
Toby Crabel described the NR7: a bar whose range, high minus low, is the smallest of the last seven bars. It marks a day of unusually small movement.
It is a measure of calm in a single bar. It does not say what the next bar will do.
How we find it
The same code that draws it on your chart follows these steps, with the same result every time.
- For each bar, compute the range = high − low.
- Compare with the ranges of the previous 6 bars.
- Mark the bar if its range is the smallest of the 7.
- Show the date.
Starting values: Window 7 bars; Range high − low. These are proposed and will be tuned on real price data before launch.
How to read it
- The gold zone marks the narrowest bar.
- Its range is smaller than the six bars before it.
- Bars after it are not part of the rule.
Status labels you may see
| Label | What it means |
|---|---|
| NR7 today | The last bar is the narrowest of 7. |
| NR7 recently | An NR7 happened in the last 5 bars. |
| None | No NR7 in the last 5 bars. |
What cancels it
Nothing cancels it. It is a fact about one bar.
What traders check next
- What the next bar did.
- Whether volume was low.
- Whether it sits inside a larger pattern.
Limits
- Narrow bars are common.
- Says nothing about direction.
- Short window.
Try it in forecastviz
- Open any ticker and choose Volatility and bands → NR7 narrow range in the left menu.
- Switch between 3M, 6M to see how the picture changes.
- Compare with Bollinger squeeze and Inside bar on the same chart.
Questions
What about NR4?
The same idea with four bars. We use seven.
Does it predict a big move?
We make no such claim.
Related trends
Further reading
- Bollinger, Bollinger on Bollinger Bands
- Wilder, New Concepts in Technical Trading Systems
- Murphy, Technical Analysis of the Financial Markets
Educational only. Not financial advice, and not a price forecast. Charts are drawn by code from past price data, which may be delayed.