Positive sentiments were observed at the Pakistan Stock Exchange (PSX), with the benchmark KSE-100 Index gaining nearly 500 points during the opening minutes of trading on Tuesday. At 9:45am, the benchmark index was hovering at 178,970.18, up by 498.32 points or 0.28%. Buying was observed in key sectors, including cement, commercial banks, oil and gas exploration companies, OMCs, and power gene