Saudi Stock Exchange's main index ended trading lower here today, losing 511.66 points to close, at 10,787.79 points. The total value of the trading reported was SAR 7 billion, while the toll of shares traded was more than 223 million, divided into over 407,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 790.00 points, to close at 22,374.24 points, with a valuation of SAR 18 million and an overall tally of 313,000 stocks traded and divided into as many as 1,646 deals.