The S&P 500 is ubiquitous. For an index that represents approximately 80% of the value of the US equity market, it may be worthwhile to gain a better understanding of how it works. In this episode, we review the S&P 500 index, the most important stock market index in the world. We’ll cover the main components of the S&P 500 and discuss what it takes for a company to be included in the index.