The Pakistan Stock Exchange (PSX) opened the week with a decline of more than 1,000 points, the biggest single-day fall in over a month. According to the Karachi-based brokerage firm Topline Securities, it was the highest day-on-day decline since Dec 26. According to the stock exchange data, the benchmark KSE-100 index lost 1,039.34 points, or 1.63pc, to close at 62,773.72 on Monday. Monday’s n