Equity benchmark index Sensex tumbled 551 points to close below the 66,000 level on Wednesday due to profit-taking in banking, financial and energy stocks amid a sharp jump in global crude oil prices.
A sluggish trend in global equity markets following lingering geopolitical worries also sapped the risk appetite of investors, traders said.
After a day's breather, the 30-share BSE Sensex plunged 551.07 points or 0.83 per cent to settle at 65,877.02. During the day, it fell 585.99 points or 0.88 per cent to 65,842.10.
The Nifty declined 140.40 points or 0.71 per cent to 19,671.10.
"Profit booking ensued in Indian markets, spurred by weak global sentiments and escalating Middle East tensions. A sudden rise in the tension has led to instability in energy prices; Brent prices rapidly rose above USD 92.5 by the day's closing time.
"The initial Q2 earnings disappointments by the IT and financials sector may have prompted attention in the domestic markets. All these factors are presumed to be a knee-jerk reaction as the total outlook on the domestic market is stable, underpinned by healthy Q2 result forecast and favourable fiscal position," Vinod Nair, Head of Research at Geojit Financial Services, said.
Among the Sensex firms, Bajaj Finance fell by nearly 3 per cent, the most among the 30 frontline companies. Bajaj Finserv, Axis Bank, HDFC Bank, Reliance Industries, NTPC, ICICI Bank and IndusInd Bank were the other major laggards.
"Fresh weakness in banking and financial majors combined with a downtick in other heavyweights like Reliance is pointing towards further slide," said Ajit Mishra, SVP - Technical Research, Religare Broking Ltd.
In contrast, Tata Motors, Sun Pharma, Maruti and Mahindra & Mahindra were the gainers.
"The market is showing early signs of fatigue within the mid and small-cap space and there is a clear investor shift to large caps and safe havens. While the geopolitical events have not yet cracked the Indian market, it has definitely slowed the momentum.
"The Indian markets hence appear relatively better placed compared to its regional peers. US markets have caught a bit of a tailwind with the Fed speakers highlighting that there is a lower need to raise rates going forward," Jaykrishna Gandhi, Head - Business Development, Institutional Equities, Emkay Global Financial Services, said.
In the broader market, the BSE midcap gauge declined 0.85 per cent and smallcap index dipped 0.32 per cent.
