Saudi Stock Exchange's main index ended trading lower here today, losing 234.40 points to close at 12,914.89 points. The total value of the trading reported was SAR 9 billion, while the toll of shares traded was over 174 million, divided into over 405,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 304.60 points, to close at 22,540.87 points, with a valuation of SAR 38 million and an overall tally of more than 717,000 stocks traded and divided into as many as 2,302 deals.