The benchmark KSE-100 index swung between sharp gains and losses, touching an intraday high of 812 points before sliding to a low of 791 points. It eventually settled at 157,554, down 482 points or 0.31 percent.

Traders pointed to a rise in the Margin Trading System (MTS) rate to 17.10, reflecting increased pressure on leveraged investors. With rollover activity in play, analysts expect volatility to remain elevated in the coming sessions.

On the sectoral front, gains in PSO, HUBC, OGDC, and GLAXO collectively added 408 points to the index.

However, major heavyweights including UBL, ENGRO, MEBL, FFC, and LUCK pulled it lower by 660 points.

In terms of traded value, PSO led the market with Rs6.96 billion, followed by BOP (Rs3.41 billion), OGDC (Rs2.74 billion), PPL (Rs2.24 billion), and TRG (Rs2.20 billion).

Overall market activity slowed compared with the previous session, with 1,664 million shares traded and total value at Rs60.8 billion. K-Electric (KEL) topped the volume chart, with 236 million shares changing hands.

Last week, the PSX maintained its upward trend, with the KSE-100 Index surging 3,597.68 points, or 2.3%, closing at 158,037.37 points, compared to 154,439.69 points the week prior.