The general index of the Qatar Stock Exchange ended trading lower today, losing 164.60 points, or 1.24 per cent, to reach 13,079.13 points. During today's session, 146,098,726 shares were traded, with a value of QAR 532,906,625, through 9,082 deals in all sectors. The shares of 8 companies rose, while the prices of 36 other companies declined. 2 companies maintained their previous closing price.