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

shoeshineboy

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

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

shoeshineboy

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

sujith

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

sujith

We do show expiry in the market depth.

ankur_maheshwari

AARTIIND21FEB1000CE stands for AARTIIND 2021 FEB 1000 CE

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

sujith

21 stands for the last two digits of the year.