Bloom Energy Surges 8% as S&P 500 Swaps It In for Trade Desk; TTD Stock Slips 2%

S&P Dow Jones Indices will add Bloom Energy (NYSE: BE) to the S&P 500 before the market opens on September 21. The index-inclusion announcement drove a sharp move higher in the fuel-cell maker's shares, reflecting anticipated demand from S&P 500-tracking funds.