Saudi Stock Exchange's main index ended trading lower here today, losing 1.81 points to close, at 8,876.49 points. The total value of the trading reported was 5.7 billion, while the toll of shares traded was more than 180 million, divided into over 255,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 233.86 points, to close, at 26,045.62 points, with a valuation of more than SR19 million and an overall tally of more than 160,000 stocks traded and divided into as many as 693 deals.