Ethic is concerned with the appropriateness of human conduct. Ethic as apply here is concerned with the truth in advertising and marketing as well as reliability of moral conduct.
Investment bank is part of general business and as such it needs ethical function to perform. It is crucial for the economy because if investment banking is not conducted ethically,it will result to investment decision that will lead to waste or gross loss in the economy. It is very important because it reinforce trust and confident in customer.
Feel free to add to it..........