RIYADH: Saudi stocks opened higher in early morning trading as investors grew optimistic as first-quarter profit for numerous companies surpassed expectations. The main index, TASI, began Tuesday 0.21 percent higher to 13,761, while the parallel market, Nomu, opened 0.09 percent higher at 24,200, as of 10:09 a.m. Saudi time. In energy trading, Brent crude oil reached 112.67