Facebook to Replace Teradyne in S&P 500 Facebook Inc. will join the benchmark Standard & Poor’s 500 Index next week, cementing the social-networking company’s recovery from the turbulence that followed last year’s initial public offering. Facebook will replace Teradyne Inc. in the S&P 500 at the close of trading on Dec. 20, S&P Dow Jones Indices said today in a statement. The Menlo Park, California-based company will also join the S&P 100 Index in place of Williams Cos. Facebook’s market value has more than doubled this year to $123 billion. The market capitalization of Teradyne, a manufacturer of products to test computer chips, is little changed this year at $3.2 billion. http://www.bloomberg.com/news/2013-12-11/facebook-to-replace-teradyne-in-s-p-500-index-next-week.htmlI think that shares will rise today.