How to catch the market movement from FII DII Data? Know how to take smart trading decisions from the daily buying and selling of FII and DII. Know the real direction of the market from NSE FII DII Data. FII DII Data: Why is this data, which shakes the market every day, so important? Do you know that the game of FII and DII in the stock market influences decisions worth crores every day? If not, then read this article till the end, because we are going to tell you how FII DII Data can completely change your trading or investment strategy!