I wanted to know why Every Last Thrusday of the Month markets are down and the News for Example : in the everycorner is due to the expiry of September derivatives contracts on Thursday.
Iam not able to understand the reason for this I know that a large part of the trade takes place in F & O but what it has to do with the falling in Nifty & Sensex Indices before a DAY i.e Expiry on Thrusday.
Kindly someone Enlighten me.