Monday's trading session at the Pakistan Stock Exchange delivered a robust rebound, with the benchmark KSE-100 index climbing over 2,100 points to close above 178,000. The surge, driven by sliding global oil prices and renewed hopes for US-Iran diplomacy, marked a sharp reversal from July's lackluster performance. Main Developments The KSE-100 index opened strongly, gaining 2,273.78 points by 11am from the previous close of 176,094.11 points. Gains later trimmed to 1,781.72 points by 2:18pm, but a post-2pm recovery lifted the index to an intraday low of 177,759.88 points before closing at 178,200.02 points—up 2,105.91 points or 1.20 per cent. Topline Securities attributed the rally to "renewed risk appetite as investors welcomed signs of easing regional tensions and softer energy prices." Key contributors included FFC, MEBL, LUCK, PPL, and ENGROH, which collectively added roughly 699 points to the index. Read also: Oil Prices Plunge as Trump Pauses Iran Strike, Eyes Hormuz Deal Market activity saw total traded volume reach 785 million shares, with traded value standing at Rs33bn. Mettis Global noted that investors took cues from easing geopolitical tensions after US President Donald Trump called off a planned strike on Iran, reducing immediate concerns over a wider regional conflict. Background The positive momentum extended gains from the previous week, as Awais Ashraf, director of research at AKD Securities, explained that optimism was fueled by expectations of a swift US-Iran agreement. He noted that sentiment improved after Trump announced talks would resume on Monday, without setting a deadline for an accord following the cessation of hostilities. July had ended on a sour note, with the KSE-100 index closing down 4,208 points or 2.3 per cent month-on-month, according to Topline Securities. Escalating US-Iran tensions had pushed global crude prices higher, weighing on investor sentiment. Average daily traded volume in July was 845 million shares, while average daily traded value was Rs37.5bn. Why It Matters Monday's rally signals a potential shift in market sentiment, as easing geopolitical risks and softer energy prices could lower inflation pressures. Ashraf highlighted that the return of inflation to single digits in July—with data due for release on Monday—would provide an additional catalyst by strengthening expectations of monetary easing and boosting investor confidence. A sustained upward trend would mark a recovery from July's losses, offering a more favorable outlook for investors and the broader economy. However, the market's dependence on geopolitical developments and oil price movements underscores its vulnerability to external shocks. What's Next Investors will closely watch the July inflation data, scheduled for release on Monday, which could influence the central bank's monetary policy stance. Additionally, the progress of US-Iran talks will remain a key driver, with any setbacks potentially reversing the current optimism. Market participants will also monitor whether the rally can sustain its momentum into subsequent sessions, particularly given the sharp intraday fluctuations observed on Monday.