How Stocks Work Full Size Verison Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Contents Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? How the Federal Reserve Works Each day, the Fed is behind the scenes supporting the economy and providing services to the U.S. financial system. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.