# NR7 — narrowest range in seven — NSE scan

> Today's high-low span is the tightest of the last seven sessions.

Canonical: https://patternsradar.com/screener/nr7

```sift
where high - low is lowest in 7 bars and close > sma(50)
```

Toby Crabel's NR7 is the oldest volatility-contraction setup in print: the narrowest range of the week, taken as the marker that a directional day is near. It says nothing about which direction — NR7 traders bracket the little bar and take whichever side breaks. The 50-day filter here leans the odds toward breaks that go up.

Category: [Volatility](https://patternsradar.com/scans/volatility.md). Default universe: top 500 NSE stocks by 20-day turnover.

Guides: [Bollinger band squeeze screener for NSE](https://patternsradar.com/blog/bollinger-band-squeeze-screener.md).

The rendered page runs this scan against the latest session and can replay it across the last 250 sessions to measure its hit rate: https://patternsradar.com/screener/nr7.