RIYADH: The Saudi main index rose on Tuesday with oil prices back on the rise while investors awaited more earnings results. TASI, opened 0.43 percent higher to 11,924, while the parallel market, Nomu, opened flat at 21,038 as of 10:07 a.m. Saudi time. Saudi oil giant Aramco increased 0.39 percent, while Saudi National Bank, one of the Kingdom’s biggest lenders, added 0.73