When a company needs capital for their business and they have a great idea they go to the SEBI for approval. After it is approved they go to the general public to sell shares of their company. This is called the IPO(Initial Public Offerings.). After that the public may want to trade their shares for gains or losses in the secondary market. The markets exists to bring the buyers and sellers together. This facilitation makes the stock market very Influential. The stock markets are a kind of market where securities are traded.