Buying interest returned at the Pakistan Stock Exchange (PSX), with the benchmark KSE-100 Index gaining over 900 points during the opening minutes of trading on Thursday. At 9:50am, the benchmark index was hovering at 177,771.47, up by 925.11 points or 0.52%. Buying was observed in key sectors, including automobile assemblers, cement, commercial banks, oil and gas exploration companies, OMCs