# Call-heavy positioning — NSE scan

> Call open interest dwarfing puts — optimism crowded enough to be worth distrusting.

Canonical: https://patternsradar.com/screener/call-heavy

```sift
from fno where pcr_oi < 0.4
```

A put-call ratio this low means the option book is almost all calls: the upside is crowded, the downside unhedged. Sometimes that is early conviction in a genuine move; at least as often it is late enthusiasm — the fuel for a stall, since heavy call writing above the price gives sellers levels to defend from the other side. A positioning extreme is a condition to notice, not a direction to trade blindly.

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/call-heavy.