U.S. stocks were Higher Thursday as the Dow Jones Industrial Average rose 86.5 points to 8703, the S&P 500 jumped 8 points to 941 and the Nasdaq Composite edged up 20.4 points to 1883.American International Group Inc. (NYSE:AIG, $12.92, -$1.30, -9.14%) said Wednesday it will speed up efforts to take its American Life Insurance Co. unit public and pursue a stock market listing in New York. This comes even as AIG has recently engaged in talks with at least one potential buyer for its flagship inte