Mumbai, Jan 17 (IANS): Key Indian equity indices on Wednesday surged to record high levels, with the barometer 30-scrip Sensitive Index (Sensex) of the BSE closing above 35,000-mark and the NSE Nifty50 above 10,800-level intra-day -- both for the first time.

According to market observers, optimism around quarterly corporate earnings, along with a surge in banking, capital goods and healthcare stocks, lifted the equity indices to fresh highs.

The wider Nifty50 of the National Stock Exchange, which scaled a record high of 10,803 points intra-day, augmented by 88.10 points or 0.82 per cent, to provisionally close (at 3.30 p.m) at 10,788.55 points.

The Bank Nifty recorded a fresh high of 26,328.40 points during the intra-day trade.

On the BSE, the Sensex closed firm at 35,081.82 points -- up 310.77 points or 0.89 per cent from its previous session's close -- after touching a new intra-day high of 35,118.61 points.

The BSE market breadth turned bullish marginally as 1,458 stocks advanced against 1,443 declines.

On Tuesday, the benchmark indices closed in the negative zone as sentiments were dampened by higher crude oil prices as well as the country's widening trade deficit.

The Nifty50 fell by 41.10 points, or 0.38 per cent, to close at 10,700.45 points, while the Sensex closed at 34,771.05 points -- down 72.46 points or 0.21 per cent.