The Indian equity benchmarks edged lower for second straight session dragged down by weakness in index heavyweights like Reliance Industries, Bharti Airtel, Hindustan Unilever, ITC, Titan and IndusInd Bank. However, the losses were capped owing to buying interest in HDFC Bank, ICICI Bank, Tata Consultancy Services and HDFC. The Sensex fell as much as 310 points and Nifty 50 index touched an intraday low of 17,824.