The Pakistan Stock Exchange (PSX) commenced trading on a positive note, with the benchmark KSE-100 Index trading over 400 points during the opening minutes of trading on Wednesday. At 9:35am, the benchmark index was hovering at 170,878.64, an increase of 431.35 points or 0.25%. Buying interest was observed in key sectors, including cement, commercial banks, fertiliser, oil and gas exploratio