Stock Option trading symbols (21Feb instead of 25Feb)

shoeshineboy · February 2021

Why do all the stock options show an expiry of 21-Feb while on the NSE website its 25-Feb

Sample 5 instruments from the market data
12630274 49337 AARTIIND21FEB1000CE AARTIIND
12630530 49338 AARTIIND21FEB1000PE AARTIIND
12630786 49339 AARTIIND21FEB1020CE AARTIIND
12631042 49340 AARTIIND21FEB1020PE AARTIIND

Also how do I get the instrument_token for the weekly expiry. The data pulled from the instrument API, seems to have only monthly expiry

sujith · February 2021

@shoeshineboy,
These are monthly options instruments that will expire on the last thursday of the month that is 25th Feb 2021.

shoeshineboy · February 2021

Thanks for the update @sujith, but why does the instrument list show it as 21Feb? Its also the same on the Web App.

sujith · February 2021

No, where does it say 21st is the expiry?
On Kite web also it doesn't say expiry is on 21st.

sujith · February 2021

We do show expiry in the market depth.

ankur_maheshwari · April 2021

AARTIIND21FEB1000CE stands for AARTIIND 2021 FEB 1000 CE

21FEB stands for 2021 FEB, likewise for MARCH, it would be AARTIIND21MAR1000CE

sujith · April 2021

21 stands for the last two digits of the year.

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Stock Option trading symbols (21Feb instead of 25Feb)