Saudi Stock Exchange's main index ended trading lower here today, losing 100.77 points to close at 12,192.61 points. The total value of the trading reported was SAR 6.1 billion, while the toll of shares traded was 166 million, divided into over 300,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 372.29 points, to close at 25,186.59 points, with a valuation of SAR 44 million and an overall tally of more than 610,000 stocks traded and divided into as many as 2,157 deals.