RIYADH: Saudi main index TASI opened lower as concerns linger about the ongoing tensions in Ukraine and erratic oil prices. As of Thursday 10:09 a.m. Saudi time, TASI was 0.15 lower at 13,019, while the parallel market, Nomu, started unchanged at 24,945. Energy prices fell as markets remained unsteady, with Brent crude down $4.01 to $109.44 a barrel, and US WTI crude lower by $4.81 to $103.01 a barrel as of 10:02 a.m. Saudi time. Almasane Alkobra Mining Co., known as Amak, gained 1.78 percent leading the gainers in opening trading for the second consecutive day, while Middle East Healthcare Co., which fell 4.52 percent, was leading the fallers. Among the banks, Alinma Bank edged down 0.39 percent, while the Kingdom’s largest valued bank Al Rajhi remained unchanged. Saudi Aramco, the largest player on the Saudi oil market, opened today"s trading session 0.12 percent lower. As both pharmaceutical giants reported declines in profit recently, Aldawaa Medical Services Co. rose 0.27 percent, while Nahdi Medical Co. edged down 0.51 percent.