The index, which was boosted by heavyweights Reliance Industries, Tata Motors and ITC, erased gains of as much as 150 points. It was dragged lower by Infosys and ICICI Bank.
Realty and auto shares gained on the BSE as seven of the 13 sectoral indices rose. Stocks of auto and consumer durables companies advanced after the government decided to infuse funds to enable PSU banks to offer cheaper retail loans.
The benchmark S&P BSE Sensex opened lower than the previous close and dropped to 19,833.17. It recovered to the day's high of 20,052.00 but was unable to sustain the gains. It finally ended at 19,915.95, rising 13.88 points or 0.07 per cent. It was the highest closing since September 24.
Over the past week, the Sensex has gained 188.68 points or 0.96 per cent. The CNX Nifty index on the National Stock Exchange was little changed, down 2.4 points, or 0.04 per cent, at 5,907.30. The SX40 index on the MCX Stock Exchange ended at 11,852.38, down 0.89 points.
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