RIYADH: Saudi Arabia’s Tadawul All Share Index dropped by 0.02 percent, or 2.39 points, to settle at 11,739.35 points on Monday.    The total trading turnover of the benchmark index was SR5.4 billion ($1.4 billion), as 82 of the listed stocks advanced, while 143 retreated.       The MSCI Tadawul Index also decreased by 1.30 points, or 0.09 percent, to close at 1,470.29.