Stock market is a secondary market where shares are traded or exchanged. SEBI regulates stock markets within India. IPO (Initial Public Offer) issued when large funds are required for any company. People together invest in a company and share the capital / assets are called Shareholders. They are the owner of the company. Investors look for long term returns. Traders look for Short term returns. Face Value, Dividend, Bonus & Split are terms used. Average performance of Top 50 are measured through SENSEX & NIFTY.