The stock market lets institutional and individual investors trade shares of public companies. Learn how it works, why prices move, and how investors buy and sell shares.

The S&P 500 has averaged about 10% annually since 1928, but that figure varies widely by time period. What the long-run data actually shows.

If you're left Googling, "what is a stock split," Select is here to help.

Learn what a stock market index is and how to use it to your advantage when investing. Check out the live indexes listed here and become an expert at reading them.