Equity benchmark Sensex tumbled over 575 points on Thursday, tracking heavy losses in index-heavyweights HDFC twins, TCS and Reliance Industries amid a weak trend in global markets.Declining for the third straight day, the 30-share Sensex slumped 575.46 points or 0.97 per cent to settle at 59,034.95. During the day, it tanked 633.06 points or 1.06…Continue Reading