Nifty, Sensex, NASDAQ, Dow Jones, CAC, etc. are all indices of different countries. While NIFTY belongs to the National Stock Exchange of India (NSE), Sensex belongs to the Bombay Stock Exchange (BSE). NASDAQ and Dow Jones are of American origin and CAC, French. Similarly, each country of the world has its own indices. However, the aforesaid are the front runners of the market.