FII/FPI meaning? FII/FPI DII trading activity?

FII/FPI and DII are  Foreign Institutional Investor/Foreign Portfolio Investors and Domestic Institutional Investor. FII/FPI are foreign investors registered under SEBI and eligible to invest in the Indian market or trade-in NSE, BSE exchange. FII/DII are large fund houses that invest in large quantities, influencing the market. This big player/smart player has large analyst team who understand market movement and investment. DII are domestic investors like mutual funds. FII DII buys good quality stock, mostly from the NIFTY 50 stock list

Why track FII/DII Trading Activity?

We often hear about new retail investors losing money in the stock market. It continues to happen until new retail investors do not get the edge of the stock market. We frequently hear about Foreign Institutional Investors (FIIs), Domestic Institutional Investors(DII) buy/sell activity impacts the stock market but exactly how is misty for the retail investor. FII, DII has big money and they can influence the market. To understand what stock FII, DII buying or selling a couple of fundamentals need to understand to track daily data. FII, DII is also referred to as smart money.

Whenever smart money takes a position in the market, It gets reflected into the number of trade, volume, open interest in a security for a day. 

Let's understand better with the below example below,