Confused about open interest

Course Name: Systematic Options Trading, Section No: 5, Unit No: 10, Unit type: Notebook

Hi Team,

I find the codes showing the source data with 'Open interest' and 'Open interest I', what does the latter one mean? 

Hello Iris,



The option chain data consists of both call and put options data. "Open Interest" corresponds to the call options open interest data, and "Open Interest.1" correspond to the put options open interest data.



Hope this helps.