Hi bank nifty index stocks weightage is being restructured i.e no single stock should have more than 20% weightage and top 3 stocks weightage should not be more than 45%.
I bought hdfc and ICICI Bank call options for Nov expiry hoping after results stocks may go up, but as usual SEBI rubbed me in the wrong way, should I wait or close calls?
Note:
Wherever I go why SEBI comes behind and spoils my party, while Jane Street like thieves are laughing all the way to their bank.
And at the end of the year SEBI will come and say 99% of traders lose, how much % of this is SEBI’S fault?
I understand that they are doing this to save small traders from losing their savings and hard earn money but they should discuss and make changes once in a year.
Without SEBI, it would be worse.
Stock Exchange 
i don’t understand , suppose previously they were buying hdfc icici and sbi for say 6000 crores ( as they had 60 % weightage ), now they buy hdfc , icici, sbi , axis and kotak in the same ratio say they buy of 9000 crore , those guys have unlimited capital . I don’t think this will be an issue for them .
What will be the probable new weightage of hdfc , icici, sbi, and axis bank in bank nifty index after SEBI changes in weightage limit?
My understanding is that Weightage of a stock in Index is calculated based on Free Float Market Cap. How do u control that?.
It is not just that.
There are additional rules that can limit a scrip from qualifying for an index,
or further limit the maximum weigtage of a scrip,
and other such additional limits
(justifiably?) to limit risk (eg. concentration risk).