What is S & P 500?
What is S & P 500?
user
S & P 500 is a company that performs investment analysis for the U.S. stock market. It tracks and analyzes 500 of the biggest companies on the U.S. stock market.
assistant
Who invented it?
user
S & P 500 was created in 1974 by Donaldson, Lufkin & Jenrette.  That is a financial services company, which also runs a fund called the “Dow Jones Industrial Average” which is a famous U.S. stock market index.  The “Dow Jones Industrial Average” tracks the stock prices of the 30 largest U.S. companies by market value.
assistant
Did you say that S & P 500 is an index?
user
Yes, it tracks the stock prices of a subset of the 500 largest companies on the U.S. stock market.
assistant
Are the companies added and deleted from the list from time to time due to market valuation of those companies?
user