Karachi, Pak Refinery's stocks traded under PRL-NOV started the day at 18.45, touched a high of 19.07, saw a low at 17.6, and closed at 18.5 with a trading volume of 524,500 shares. The PRL-OCT variant began at 17.78, peaked at 18.75, dropped to 17.65, and finished the day at 18.18 with a whopping 19,999,000 shares traded.