The Qatar Stock Exchange (QSE) Index closed Tuesday's trading session down by 43.51 points, or 0.42 percent, to reach 10.405.45 points.During the session, 263,860,939 shares were traded, with a total value of QR 435,851,433.460, resulting from 14,917 transactions across all sectors.The session saw the shares of 21 companies rise, 25 other companies fall, while three companies maintained their previous closing prices.The market capitalization at the end of the trading session was QAR 604,295,463,770.370 compared to QR 604,514,239,435.430 in the previous session. (QNA)Source: Qatar News Agency