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The Short Answer

How Did Facebook End Up in the S&P 500?

We dive into the process for adding companies and booting them from the iconic index.

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Question: I heard that  Facebook (FB) will soon be added to the S&P 500 even though the company went public just last year. What are the rules regarding when a company joins or leaves the index?

Answer: Given the S&P 500's role as one of the most widely used measures of U.S. stock market performance, one might assume that the index's composition doesn't change much from year to year, but that's not necessarily the case. In fact, this year alone the S&P 500, which tracks the stocks of many of the largest U.S. companies and weights them by market value, has already swapped out 15 constituent companies in exchange for others.

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Adam Zoll does not own shares in any of the securities mentioned above. Find out about Morningstar’s editorial policies.