RIYADH: Saudi Arabia’s main index reversed some of its gains to close lower on the last trading day of the week, as investor concerns shifted over a recession. As of Thursday’s closing bell, TASI, fell 0.47 percent to reach 12,530, while the parallel market, Nomu, gained 1.14 percent at 22,272. Alhokair Group was up 10 percent, leading the market gainers; Wataniya Insurance