efficient markets hypothesis

What is the S&P 500?

The S&P 500 index is a system for quantifying and picking approximately 500 stocks that are updated regularly. The S&P 500 is weighted by market cap and stocks enter and leave their index based primarily on their size. Companies that do well and grow in market capitalization enter the S&P 500 and the companies that …

What is the S&P 500? Read More »