Facebook, which went public in May 2012, replaced electronics company Teradyne on the widely quoted index. Facebook's highly hyped share-trading debut was a disaster, however, and it took a year until the company's shares reached their original launch price.
Wednesday's news, which was released in an after-hours statement, sent Facebook's shares up 4 per cent, pricing the company at 121 billion dollars to rank as the 30th most valuable company on the S&P 500. The company posted a profit of 425 million dollars in the most recent quarter.//DPA