Stock markets closed with losses for the fifth consecutive day on Thursday, with the Sensex tumbling 555.95 points due to relentless foreign fund outflows and concerns over the US H-1B visa fee, making investors jittery.Photograph: Danish Siddiqui/ReutersThe 30-share BSE Sensex tanked 555.95 points or 0.68 per cent to settle at 81,159.68.During the day, it dropped 622.74 points or 0.76 per cent to 81,092.89. The 50-share NSE Nifty tumbled 166.05 points or 0.66 per cent to 24,890.85.A weak trend in global pe ...