Sensex tumbled over 440 points and the NSE Nifty cracked below the key 15,000-level in early trade on Friday in line with a slump in other Asian markets as US bond market turmoil continued to fan investor worries globally.
Sensex was trading at 50,405.99, showing a drop of 440.09 points or 0.87 per cent in the opening session.
Similarly, Nifty was quoted lower by 124.75 points or 0.83 per cent at 14,956.
On the Sensex chart, IndusInd Bank, ICICI Bank, SBI, PowerGrid and HDFC Bank emerged as major laggards — dropping as much as 3 per cent.
Of the Sensex shares, 21 traded in the red.
Elsewhere in Asia, equity markets continued their decline on Friday following a retreat on Wall Street amid concerns over rising yields in bond markets.
On Thursday, the Sensex had shed 598.57 points or 1.16 per cent, and the Nifty had lost 164.85 points or 1.08 per cent.
Foreign investors had offloaded equities worth Rs 223.11 crore on a net basis in Indian capital markets on Thursday, according to exchange data.
Meanwhile, Brent was trading 0.77 per cent higher at $64.32 per barrel.