Entities involved in the Share Market and their roles

Entity	Example of companies	What do they do?	In simpler words
Credit Rating Agency (CRA)	CRISIL, ICRA, CARE	They rate the credit worthiness of corporate and governments	If a corporate or Govt entity wants to avail loan, CRA checks if the entity is worthy of giving a loan
Debenture Trustees	Almost all banks in India	Act as a trustee to corporate debenture	When companies want to raise a loan they can issue debenture against which they promise to pay an interest. These debentures can be subscribed by public. A Debenture Trustee ensures that the debenture obligation is honored
Depositories	NSDL and CDSL	Safekeeping, reporting and settlement of clients securities	Acts like a vault for the shares that you buy. The depositories hold your shares and facilitate exchange of your securities. When you buy shares these shares sit in your Depositary account usually referred to as the DEMAT account. This is maintained electronically by only two companies in India
Depositary Participant (DP)	Most of the banks and few stock brokers	Act as an agent to the two depositories	You cannot directly interact with NSDL or CDSL. You need to liaison with a DP to open and maintain you DEMAT account
Foreign Institutional Investors	Foreign corporate, funds and individuals	Make investments in India	These are foreign entities with an interest to invest in India. They usually transact in large amounts of money, and hence their activity in the markets have an impact in terms of market sentiment
Merchant Bankers	Karvy, Axis Bank, Edelweiss Capital	Help companies raise money in the primary markets	If a company plans to raise money by floating an IPO, then merchant bankers are the ones who help companies with the IPO process
Asset Management Companies (AMC)	HDFC AMC, Reliance Capital, SBI Capital	Offer Mutual Fund Schemes	An AMC collects money from the public, puts that money in a single account and then invest that money in markets with an objective of making the investments grow and thereby generate wealth to its investors.
Portfolio Managers/ Portfolio Management System (PMS)	Religare Wealth Management, Parag Parikh PMS	Offer PMS schemes	They work similar to a mutual fund except in a PMS you have to invest a minimum of Rs.25,00,000 however there is no such cap in a mutual fund
Stock Brokers and Sub Brokers	Zerodha, Sharekhan, ICICI Direct	Act as a intermediary between an investor and the stock exchange	Whenever you want to buy or sell shares from the stock exchange you have to do so through registered stock brokers. A sub broker is like an agent to a stock broker