A certified stock broker can work with a brokerage firm such as Share khan or India bulls as their agent. The work involves contacting clients and managing their investments in stock market products. The benefit of working in a brokerage firm is that it provides more security and stableness than working individually.

A certified stock broker can also work as an independent agent. He/she has to find new clients herself/himself and thus needs more interpersonal as well domain knowledge than what would typically be required of an agent working with a firm. The positive and the negative side is that an independent agent can determine his/her own commission and thus lose or win big if he manages to invest in a profitable stock.

An Equity analyst is one who studies organizations' metrics to determine risk and profitability of its stocks and other financial products. He/she can work independently, but most often are employed by large brokerage firms or even by business organizations.

A Bank broker does the same work as other brokers do that is to sell and buy shares and other financial products for clients albeit in a bank. The major difference though is that the agent doesn't have to run around prospective customers rather bank provides a steady stream of customers who would themselves contact you.