After opening with a 139-points rally, the index touched a high of 17,530.94, before ending the session down with a gain of 120.99 points at 17,464.81, as the latest food inflation data that touched nearly 20 per cent, slightly dented the momentum towards the later part of the session.

However, capital goods and refinery stocks supported the market.
The broader National Stock Exchange index Nifty 50 too surged to retain the psychological 5,200 mark by rising 31.60 points to close at 5,201.05. It touched the day’s high of 5,221.85 points. The Sensex witnessed a historic 82 per cent rally this year, boosted by the UPA victory in May.

The last day’s gain was backed by power sector stocks led by NTPC by rising 1.20 per cent to Rs 235.70, a level never seen since the last two years on reports the government may relax a rule to allow power producers to sell at market prices.