Mumbai, Sep 14 (IANS): Key Indian equity indices -- the BSE Sensex and NSE Nifty50 -- traded on a flat note with marginal gains during the mid-afternoon session on Thursday, with healthy buying in healthcare and banking stocks.

However, profit booking in metal and oil and gas stocks capped gains.

Around 1.15 p.m., the wider 51-scrip Nifty50 of the National Stock Exchange (NSE) was up 5.20 points, or 0.05 per cent to trade at 10,084.50 points.

The 30-scrip Sensitive Index (Sensex) of the BSE, which opened at 32,289.26 points, traded at 32,218.49 points -- up 32.08 points, or 0.10 per cent, from its previous close at 32,186.41 points.

The Sensex has so far touched a high of 32,328.61 points and a low of 32,187.20 points during the intra-day trade.

The BSE market breadth was slightly bullish -- with 1,254 advances and 1,216 declines.

On Wednesday, the benchmark indices closed on a flat-to-negative note, as profit booking eroded investors' risk-taking appetite.

Consequently, the NSE Nifty 50 closed at 10,079.30 points -- down 13.75 points or 0.14 per cent, whereas BSE Sensex closed at 32,186.41 points -- up only 27.75 points, or 0.09 per cent.