Saudi Stock Exchange's main index ended trading lower here today, losing 3.19 points to close at 12,179.32 points. The total value of the trading reported was SAR 6.5 billion, while the toll of shares traded was 162 million, divided into over 290 ,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day losing 28.01 points, to close at 25,659.54 points, with a valuation of SAR 59 million and an overall tally of more than 570,000 stocks traded and divided into as many as 2,590 deals.