Saudi Stock Exchange's main index ended trading lower today, losing 6.62 points to close, at 9,138.37 points. The total value of the trading reported was 13 billion, while the toll of shares traded was more than 495 million, divided into over 540,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day gaining 387.34 points, to close, at 25,824.70 points, with a valuation of more than SR46 million and an overall tally of more than 560,000 stocks traded and divided into as many as 1,211 deals.