Pakistan, May 26 -- Stocks gained ground on Monday as oil prices fell to two-week lows on growing hopes of a US-Iran peace deal, while IMF-related developments and progress on a proposed fixed tax scheme for retailers further supported sentiment. The Pakistan Stock Exchange's (PSX) benchmark KSE-100 Index settled at 171,725.29 points, up 3,881.05 points, or 2.31%, from the previous close of 167,844.24. During the session, the index touched an intraday high of 171,920.80, gaining 4,076.56 points, or 2.43%, and a low of 170,161.66, still up 2,317.42 points, or 1.38%, from the previous close. "The market is looking to track back to previous levels due to declining oil prices and the potential end to the hostilities in the Middle East," said ...