RIYADH: Saudi Arabia’s Tadawul All Share Index slipped on Tuesday, with the index shedding 51.65 points to close at 11,736.07.  The total trading turnover of the benchmark index was SR5.15 billion ($1.37 billion) with 54 of the listed stocks advancing, while 179 declined. The Kingdom’s parallel market Nomu also slipped by 0.85 percent to 30,602.83, while the MSCI Tadawul Index inched down by 0.22 percent to 1,474.39.   The best-performing stock on the main market was Riyadh Cables Group Co., with its share price surging by 7.56 percent to SR128.