Saudi Stock Exchange's main index ended trading lower here today, losing 23.57 points to close, at 8,878.30 points. The total value of the trading reported was 6 billion, while the toll of shares traded was more than 200 million, divided into over 270,000 deals. The Saudi Parallel Equity Market Index (NOMU) ended the day gaining 329.52 points, to close, at 26,279.48 points, with a valuation of more than SR18 million and an overall tally of more than 110,000 stocks traded and divided into as many as 673 deals.