The 30-share index Sensex lost its early gains on account of profit booking witnessed across select heavyweight scrips.

Realty, bankex and IT stocks were in public interest, whereas consumer durable, oil & gas, healthcare and FMCG topped the losers chart.

At 12.57 p. m., the Sensex was trading 69.01 points up at 17,902.55.

In the meantime, the Nifty gained 20.50 points at 5,372.95.

The country's industrial output, assessed by index of industrial production, grew at a slower-than-expected 11.5% as against the last year, below the twelve monthly growth of 16.5% in April.

The major gainers in the Sensex pack were I C I C I Bank, HDFC, State Bank Of India, Bharat Heavy Electricals and HDFC Bank

The top losers were Oil & Natural Gas Corporation, Reliance Infrastructure, Hero Honda Motors, Bharti Airtel, Reliance Communications and ITC.

The Midcap and Smallcap index gained 0.19% and 0.58% respectively.

Among sectoral indices, the Realty index surged 46.42 points, the Bankex increased 105.45 points, the Consumer Durables index declined 4,960.78 and the Oil & Gas index remained down by 45.1 points.