Karachi, GlaxoSmithKline experienced a notable price increase in today's trading at the Pakistan Stock Exchange. Opening at 133.33, the stock closed at 137, reaching a high of 135.85 after a low of 132.05. A total of 219,500 shares were traded during the session. According to information available from the Pakistan Stock Exchange (PSX), GlaxoSmithKline's stocks ended the day at a price of 131.76.