Just an index that you really really want to be in... It's the mother of all indexes. Facebook gained 4.3% when it was announced they were getting included in

Just an index that you really really want to be in... It's the mother of all indexes. Facebook gained 4.3% when it was announced they were getting included in the S&P 500 (a $5b market cap gain at the time): http://www.reuters.com/article/us-sp500-facebook-idUSBRE9BA1AQ20131211 http://www.reuters.com/article/us-sp500-facebook-idUSBRE9BA1...