South Korea’s securities and derivatives markets will adjust their schedules on November 19 for the nationwide College Scholastic Ability Test, with regular stock-market trading starting at 10 a.m. The Korea Exchange will operate its Securities, KOSDAQ and KONEX markets from 10 a.m. to 4:30 p.m., followed by after-hours trading from 4:40 p.m. to 8 p.m. Stocks, exchange-traded funds and exchange-traded notes are covered by the change. Stock and interest-rate derivatives will trade from 9:45 a.m. to 4:45 p.m., while currency products and gold futures will have only their opening times delayed. The night market will run from 7 p.m. to 6 a.m. the following day. Nextrade will suspend its 8 a.m. to 8:50 a.m. pre-market and run its main market from 10 a.m. to 4:20 p.m. and its after-hours market from 4:30 p.m. to 8 p.m. More than 551,000 high school seniors and graduates are scheduled to take the exam.