After a day of selling, buying interest returned to the Pakistan Stock Exchange (PSX), with the benchmark KSE-100 Index gaining over 500 points during the opening minutes of Thursday. At 10:10am, the benchmark index was hovering at 187,571.71, an increase of 538.45 points or 0.29%. Buying was observed in key sectors, including automobile assemblers, cement, fertiliser, oil and gas exploratio