The 30-share index, which had gained 67.35 points in the previous session, added 76.39 points, or 0.26 per cent, at 30,002.54 on sustained buying activity in early trade.
Among BSE sectoral indices, metal index gained the most by 1.2 per cent, followed by realty 1.1 per cent, capital goods 0.97 per cent and power 0.96 per cent.
Indian equity markets closed on a flat note on Tuesday on the back of mixed global cues and a weak rupee. "Aviation and media-entertainment sector stocks traded firm on strong buying support", Desai told IANS.
The NSE Nifty too was quoting 24.90 points, or 0.26%, higher at 9,338.95.
"Major Asian markets have all ended on a positive note, barring SET and Shanghai index".
In investments, provisional data with the exchanges showed that foreign institutional investors (FIIs) sold stocks worth Rs 542.47 crore while domestic institutional investors (DIIs) purchased scrips worth Rs 663.33 crore.
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The Indian rupee weakened by 32 paise to 64.62-63 per U.S. dollar from its previous close of 64.30-31.
Asian stock markets were subdued on Tuesday, taking their cue from a flat Wall Street, as investors searched for the next catalyst following France's presidential election, while oil inched higher on expectations OPEC supply cuts will be extended. Meanwhile, the Nifty was trading higher by 23.30 points or 0.25% at 9,337.35 with 37 components gaining.
BSE Mid-cap index closed higher by 0.19% at 14,821.
Bharti Airtel fell 1.75 per cent as investors trimmed their positions ahead of its results.
Tata companies were in focus with Tata Steel gaining 1.2%, Tata Motors 0.8% and TCS 0.5% in morning trade.
This is published unedited from the IANS feed.