RIYADH: Saudi stocks dropped for a second straight day on Wednesday, even as Moody’s affirmed the Kingdom’s credit rating at ‘A’ with a stable outlook. The main TASI index lost 0.5 percent to 12,596, and the parallel market Nomu slipped nearly 0.6 percent to 22,206 despite a rise in oil prices. As Saudi Arabia led the fall in the region, fellow Gulf Cooperation Council bourses