# Short buildup — NSE scan

> Open interest rising into a falling price — fresh shorts being written with conviction.

Canonical: https://patternsradar.com/screener/short-buildup

```sift
from fno where fut_oi_change_pct > 3 and change < -1
```

A falling price with growing futures open interest means the decline is being sold into, not just abandoned: someone is opening new short positions at each lower level and paying margin to hold them. It is the bearish mirror of the long buildup, and it reads as a warning on longs you hold as much as a candidate list for shorts.

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

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/short-buildup.