Shares at the Pakistan Stock Exchange (PSX) opened the week in the red, with analysts attributing the slump to uncertainty over an agreement with the International Monetary Fund (IMF). The benchmark KSE-100 index lost 444.97 points, or 1.08 per cent, to close at 40,673.64 points. It reached an intraday low of 494.64 points, or 1.2pc, around 3:27pm. Aba Ali Habib Securities’ Head of Research