The key benchmark indices are trading lower tracking their Asian peers which sank on Thursday after Wall Street suffered its worst drubbing in eight months.
A sinking rupee also added to investors' concerns. The rupee also slipped to a new record low of 74.48 against the US dollar so far in intra-day trade, down 26 paise from its previous close.
Globally, MSCI's broadest index of Asia-Pacific shares outside Japan plummeted 3.9 per cent to its lowest since March 2017. Japan's Nikkei fell 4.4 per cent, the steepest daily drop since March, while the broader TOPIX lost around $230 billion in market value. Shanghai shares dropped 4.3 per cent, on track for their worst day since February 2016, to their lowest level since late 2014, while China blue chips slid 4 per cent.
Back home, at 11:43 AM, BSE SENSEX was at 33941.21 down by -819.68 points or by -2.36 % and then NSE Nifty was at 10204.55 down by -255.55 points or by -2.44 %.
The BSE Sensex touched intraday high of 34063.82 and intraday low of 33723.53 The NSE Nifty touched intraday high of 10219.55 and intraday low of 10138.6.
The top gainers of the BSE Sensex pack were YES Bank Ltd. (Rs. 238.00,+1.69%), Oil And Natural Gas Corporation Ltd. (Rs. 150.20,+1.04%), among others.
The top losers of the BSE Sensex pack were State Bank of India (Rs. 262.60,-5.57%), Tata Steel Ltd. (Rs. 554.45,-4.91%), IndusInd Bank Ltd. (Rs. 1587.35,-3.18%), Infosys Ltd. (Rs. 678.70,-3.08%), Vedanta Ltd. (Rs. 211.70,-2.87%), among others.
The Market breadth, indicating the overall strength of the market, was weak. On BSE out of total shares traded 2422, shares advanced were 593 while 1718 shares declined and 111 were unchanged.