KARACHI: A bullish trend is being seen in the Pakistan Stock Exchange. 100-index gained 90 points at the start of trading. The Pakistan Stock Exchange is witnessing a bullish trend on the third day of the business week. Hundred Index increased by 90 points to 41,951. The dollar continues to fly, the dollar is trading at 222 rupees 50 paise at the inter-bank exchange. Yesterday, the dollar closed at 221 rupees 42 paise. In the open currency market, the dollar reached 233 rupees.