 By JustMarkets Prospects for a Santa Claus rally are decreasing every day as investors fear that aggressive Federal Reserve policy tightening will hamper stock indices. At the close of the stock market on Friday, the Dow Jones Index US30 decreased by 0.85 -1.79 for the week, and the SP 500 Index US500 was down by 1.11 -2.21 for the week. The Technology ...... 