India, Feb. 27 -- Equity benchmark indices Sensex and Nifty ended almost flat after a volatile day of trading on Thursday, dragged down by HDFC Bank and other blue-chip stocks. Also, caution ahead of the US-Iran talks made investors stay on the sidelines.

Paring morning gains, the 30-share BSE Sensex dipped marginally by 27.46 points or 0.03 per cent to settle at 82,248.61. During the day, it hit a high of 82,579.16 and a low of 81,970.47, gyrating 608.69 points. The 50-share NSE Nifty eked out a marginal gain of 14.05 points or 0.06 per cent to end at 25,496.55.

From the Sensex pack, Trent, Eternal, Power Grid, HDFC Bank, Asian Paints, UltraTech Cement, NTPC and Axis Bank were among the biggest laggards. Bharat Electronics, Sun Pharma,...