KARACHI: Pakistani stocks witnessed a sharp ascent on Thursday as Karachi Stock Exchange 100-index rose by 400 points and crossed the level of 29,000. In the inter-bank market, the dollar fell to 100.90 rupees as it saw a slight decline of 20 paisa. The foreign investors with net purchases of $0.21m worth of stocks also helped to lift sentiments. The market has been fidgety due to the ongoing protests by Pakistan Tehreek-i-Insaf (PTI) and Pakistan Awami Tehreek (PAT).