The Sensex remained volatile before ending with a loss of 57.27 points, or 0.30 per cent, to 18,735.60, the levels last seen on November 26, 2012. The index had lost 778 points in last five sessions. The gauge shuttled between 18,859.82 and 18,669.20 during the session.
Similarly, the broad-based National Stock Exchange index Nifty declined 7.40 points, or 0.13 per cent, to 5,651.35, after moving between 5,691.45 and 5,631.80.
They said a weakening Asian trend and lower opening in Europe as Cypriot lawmakers begin a debate to unlock bailout funds and prevent a financial collapse, further influenced the market sentiment.
In 30-BSE index components, 18 stocks declined led by State Bank of India, ICICI Bank, Infosys, Reliance Industries, Bharti Airtel, Dr Reddy's Lab, Tata Motors and Tata Steel.
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Nearly half of the benchmark kitty stocks lost over five per cent this week, while the small and medium six sector stocks suffered heavy losses on all-round selling.
However, a gain in stocks of Bajaj Auto, Hero MotoCorp, Hindalco, Sterlite Industries, Jindal Steel and Tata Power saved the market from any major eventuality.