Recipes
OI and Volume
Open interest is the number of open contracts at each strike and expiration. Volume is the number traded today. Side by side they show where positions are and where the trading is.
1. Open interest
In one pane, the joy app with oi:
2. Volume
Split the pane and open the same app with volm:
Each row is an expiration and each bar a strike; calls are yellow, puts are blue.
3. Any symbol
Replace the symbol with @ in both panes, and they follow the global symbol:
Variations
Only the five nearest expirations, within 10% of the spot price:
The same numbers added up by strike, as a table (stks):