What does it mean for a stock to be replace on the S&P 500?

Question

What does it mean for a stock to be replace on the S&P 500?

Answer 1

that the stock no longer meets the requirements to be in the top 500 for S&P and is replaced by the next in line

Answer 2

It means that funds that own indexes such as the S&P500 will have to sell the stock that is being dumped, and buy the stock that is replacing it.

example:

http://www.reuters.com/article/hotStocks...