Karachi, Pakistan: Blue-Ex (GEMBLUEX) closed marginally higher at PKR 19.93 after a day of volatile trading. The company's shares fluctuated significantly, starting the day at PKR 19.90 and dropping to a low of PKR 17.15 before rebounding to a high of PKR 19.93. The trading volume for the day stood at 7,000 shares, with the stock finally settling at a closing price of PKR 18.54.