How Stocks Work Full Size Verison Share | Have A Question About This Topic? Address Thank you! Oops! Related Contents The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.