Tesla stock price soars 13% on addition to S&P 500 index

Shares of the electric carmaker Tesla (NASDAQ: TSLA) soared over 13% in pre-open Tuesday on the announcement that the company is expected to join the S&P 500 next month.  Fundamental analysis: Tesla finally added to S&P 500 The news was announced by the S&P Dow Jones Indices which said that Tesla would join the S&P 500 index before the trading begins on December 21, likely in two tranches to make it easier for investment funds.  “(Tesla) will be one of the largest weight additions to the S&P 500 in the last decade, and consequently will generate one of the largest