Karachi—KSE-100 Index positioned above 40,000 though with a slight gain of 19 points to close in green at 40,050 levels here on Tuesday. Dewan Cement was the volume leader of the day amid a market volume of 240 million shares. While other top performers were including K Electric and Dewan Salman with respective trade volumes of 17 million and 13 million shares to their credit. Oil and gas sector, fertilizer sector seem attractive at current levels. It may be noted that the rally in the international oil prices prevails that helped the prices to touch $45/bbl primarily due growing confidence that a production freeze may be discussed by OPEC next month after Saudi Arabia hinted that it may be open to the possibility.