Twitter was just added to the S&P 500 this year. Facebook wasn't added until 2013. https://www.reuters.com/article/us-sp500-facebook/facebook-to-join-sp-500-id

Twitter was just added to the S&P 500 this year. Facebook wasn't added until 2013. https://www.reuters.com/article/us-sp500-facebook/facebook-to-join-sp-500-idUSBRE9BA1AQ20131211 https://www.reuters.com/article/us-sp500-facebook/facebook-t... The chances of Uber getting into a major index quickly is very remote. On the bright side, Uber has a CFO now :). I doubt many institutional investors will be forced to buy the stock. It will be interesting to see what percentage Uber tries to float though.