RIYADH: Saudi Arabia’s main stock market extended gains on Sunday, tracking a rise in oil prices last week. TASI was up 0.5 percent to 13,682 at the closing bell, with Saudi Arabia’s largest valued bank Al Rajhi touching its highest level since its market debut of SR177.6 ($47.4). The parallel Nomu market closed 0.9 percent lower at 24,193. Elsewhere in the GCC, stock