The institutions and big players of Wall Street shape your financial world in a profound way; many act on behalf of millions of people as they invest pension funds, retirement plans, or other group assets. Investment bankers play a key role for companies that sell stock; stock brokers offer an array of services to fit a number of investor needs. Learn how deal makers, brokers, and bankers shape your financial opportunities.The Secrets of the Great Investors series is a collection of presentations that explain, in understandable language, the strategies, tactics, and principles that have produced great wealth, and how you can improve you financial future. History's greatest investors used powerful investing philosophies to produce superior results, and you can learn from their successes and mistakes.