PT Bhai this FII activity is very deceptive. You should also check the FII activity on Derivatives section. They start buying there first before they do in cash and start selling there first before they sell in cash. Most often than not you will see when the markets tank they wont sell in cash until maybe carnage has already happened like you saw from 5400 the first sell came when nifty breached 5200. But before that they were selling derivatives. There is an excel sheet on nse website which gets updated everyday. Last 3 days the average net position in derivatives stock futures(buy) index futures(buy) stock options (buy) has been massive. above 5000 crores net As far as I remember.