Most investors do not get involved in speculation or commodities, but speculators play a vital function in financial markets by absorbing and managing risk. Technical traders practically ignore business results within specific companies, instead focusing on broad market indicators such as price trends, trading volume, and rate of change in major stock market averages. 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 your financial future. History's greatest investors used powerful investing philosophies to produce superior results, and you can learn from their successes and mistakes.