# 20-day channel breakout — NSE scan

> Pushing through the top of the 20-day range with volume behind it.

Canonical: https://patternsradar.com/screener/donchian-breakout

```sift
where close > donchian_upper[-1]
  and volume > 1.5x avg(volume, 20)
```

The Turtle traders' entry, more or less: buy when price clears the highest high of the last twenty sessions. Comparing against the previous bar's channel rather than today's is what keeps it honest — today's high is part of today's channel, so the naive version triggers on itself.

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

Guides: [Volume breakout screener for Indian stocks](https://patternsradar.com/blog/volume-breakout-screener-india.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/donchian-breakout.