What does Sensex, bse, nse and Nifty mean? Manish is an average investor in the stock exchange and loves to share some basic funds and as with this inquisitive friend in India there are two major stock exchanges. NSE as national stock exchanges and BSE As Bombay Stock Exchange .BSE is oldest stock exchange in Asia while NSE is the largest in the country. Sensex And nifty are indexes or indicators offered general idea about whether the most of stock gone up and down. SENSEX is like a pedometer off market sentiments of bse. So if a sensex goes up their is high probability stock prices of company listed on bse will largely go up similarly Nifty register market sentiments for nse so if the nifty go up there is high probability stock prices of company listed on NSE will largely go up.