mumbai ignoring weak global cues domestic stock markets ended a volatile session on a positive note on wednesday on short covering in the derivatives segment ahead of the august series expiry on thursday stocks were subdued at start of the session till a surge in metal and oil gas shares lifted indices from lows the bse metal index rose 424 per cent to 1120377 and was the top gainer among sectors tata steel surged 899 per cent to rs 65985 hindalco industries gained 212 per cent to rs 15655 jindal steel climbed 264 per cent to rs 3795 and sesa goa was up 286 per cent to rs 192665 the bombay stock exchanges sensex closed up 74 points or 05 per cent at 1499304 the index touched a high of 1502953 and low of 1459211 earlier biggest sensex gainers were tata steel up 899 ongc 305 bhel 245 hindalco industries 212 and reliance energy 204 infosys technologies down 255 ntpc 129 hdfc 119 satyam computer 098 and icici bank 061 were the biggest laggards national stock exchanges nifty ended higher by 39 points or 089 per cent at 435930 making a high of 436860 and low of 422635 intra day market breadth on bse showed 1530 advances and 1094 declines while on nse 676 shares advanced and 476 declined telecom shares witnessed a downslide in reaction to telecom regulatory authority of indias recommendations on the licensing policy according to trai market share of a merged entity following a proposed merger or acquisition should not exceed 40 per cent either in terms of subscriber base or revenue which is currently 67 per cent the regulator also removed the existing spectrum cap of 15 mhz for an operator in a circle trai has also marginally increased the spectrum charges of frequencies up to 10 mhz to 5 per cent from the existing 4 per cent despite the early weakness bharti airtel closed up 054 per cent at rs 87970 mtnl up 096 per cent at rs 13735 and idea cellular gained 274 per cent to rs 11995 in line with the rest of the market in the derivatives segment nifty august futures ended at 6point premium to the spot while open interest decreased to 206 crore provisional meanwhile asian stocks ended lower with the japanese nikkei down 169 per cent hang seng 147 per cent lower and straits times down 025 per cent in europe the ftse and cac recovered from early losses up half a per cent but the dax was still 009 per cent lower courtesy