You Would Rather Be... Full Size Version Share | Have A Question About This Topic? Address Thank you! Oops! Related Contents Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? 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 Principles Principles that can help create a portfolio designed to pursue investment goals.