As part of its efforts to revive the euro economy, the European Central Bank cut its deposit rate deeper into the negative territory and extended its bond-buying programme by six months. But many market players felt that was just not enough.
The rupee clouded the picture as it faltered again and fell to 66.68, an over two-year low, which along with capital outflows made investors more anxious.
It has now lost 531.30 points in the last three days.
The broader NSE Nifty cracked below yet another crucial 7,800-mark by falling 82.25 points, or 1.05 per cent, to close at 7,781.90. It moved between 7,775.70 and 7,821.40 intra-day.
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For the week, the Sensex and the Nifty were down 490.09 points, or 1.87 per cent, and 160.80 points, or 2.02 per cent, respectively.
"Weak global cues on account of status quo from ECB indicating that it would not pump more new money has dampened sentiment globally. Continued selling of foreign investors form emerging markets, including India, and a weak rupee have shaken confidence," said Gaurav Jain, Director, Hem Securities.
HDFC and M&M tanked the most, down 2.42 per cent each.
Of the 30-share Sensex components, 26 ended in the red.
NTPC, ITC, ICICI Bank, Tata Motors and RIL too lost.
However, Sun Pharma was a bright spot, which soared 4.02 per cent after one of its subsidiaries got USFDA approval to manufacture and market generic version of Novartis' Gleevec.
Bharti Airtel, Coal India and Tata Steel gained though.
Sector-wise, the BSE power index bled the most by falling 1.78 per cent, followed by realty, FMCG, auto and banking.
While premier indices in China, Hong Kong, Japan,
Singapore, South Korea and Taiwan fell by up to 2.18 per cent at the close, those in France, Germany and the UK moved down by up to 0.39 per cent in early session.
"With few rhetorics now being heard from Parliament on the GST front, Indian markets have been looking for cues to remain on an uptrend. Sentiment has also been affected, with Chennai floods crippling several businesses including brokerages," said Anand James, Co Head Technical Research Desk, Geojit BNP Paribas.
The total turnover slumped to Rs 2,989.76 crore, from Rs 3,096.30 crore yesterday.