The secondary market is the market for the sale and purchase of previously issued or second hand securities.
In secondary market securities are not directly issued by the company to investors. The securities are sold by existing investors to other investors. Sometimes the investor is in need of cash and another investor wants to buy the shares of the company as he could not get directly from company. Then both the investors can meet in secondary market and exchange securities for cash through intermediary called broker.
In secondary market companies get no additional capital as securities are bought and sold between investors only so directly there is no capital formation but secondary market indirectly contributes in capital formation by providing liquidity to securities of the company.
If there is no secondary market then investors could get back their investment only after redemption period is over or when company gets dissolved which means investment will be blocked for a long period of time but with the presence of secondary market, the investors can convert their securities into cash whenever they want and it also gives chance to investors to make profit as securities are bought and sold at market price which is generally more than the original price of the securities.
This liquidity offered by secondary market encourages even those investors to invest in securities who want to invest for small period of time as there is option of selling securities at their convenience.