The company when requires fund sells the company share to public to raise finds through initial public offer this is also called primary market. The share holder cannot ask for refund once the ipo is allotted hence the shares could be sold in stock market which is called secondary market. in India there are two major stock exchanges NSE and BSE. The NSE utilises NIFTy and BSE uses SENSEX. The company has an option to share the profits to the share holders through dividends or Bonus which is solely company decision and the share holder has no rights to ask for it.