RIYADH: Saudi stocks ended slightly higher on Sunday amid strong oil prices that dipped a day later on the back of geopolitical worries. TASI, the main index, finished 0.4 percent higher at 12,999, even as the biggest player in the Saudi oil market, Aramco, was down 1.76 percent. The parallel market, Nomu, rose 0.62 percent to 24,215. In line with the Saudi bourse, most GCC