Buying was observed at the Pakistan Stock Exchange (PSX), with the benchmark KSE-100 Index gaining over 600 points during the opening minutes of trading on Tuesday. At 9:35am, the benchmark index was hovering at 177,610.06, a gain of 643.38 points or 0.36%. Buying interest was observed in key sectors, including automobile, cement, commercial banks, oil and gas exploration companies, OMCs and