Saudi Stock Exchange's main index ended trading lower here today, losing 53.91 points to close at 11,512.11 points. The total value of the trading reported was SAR 9.5 billion, while the toll of shares traded was 261 million, divided into over 450,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 32.39 points, to close at 22,978.52 points, with a valuation of more than SAR 46 million and an overall tally of more than 580,000 stocks traded and divided into as many as 1,801 deals.