Tata Motors' scrip plunged 5.05 per cent to end at Rs 559.75 on the BSE. During the day, it fell by 6.24 percent to Rs 552.75. The stock was the biggest loser among the 30-Sensex scrips.
On the NSE, the scrip was down 4.96 percent to close the day at Rs 559.95. Tracking weakness in the stock, the company's market valuation fell by Rs 10,540.41 crore to Rs 1,50,801.59 crore.
In terms of volume, 8.94 lakh shares of the company changed hands on the BSE and over one crore shares were traded on the NSE during the day.
"Tata Motors' Q3 FY15 results were below our estimates due to higher losses in the standalone business and lower than expected margins at JLR," said Bharat Gianani, Senior Research Analyst - Automobile, Angel Broking.

Tata Motors had yesterday reported 25.5 percent drop in consolidated net profit at Rs 3,581 crore for the December quarter due to massive loss in domestic business and marginal dip in its bread and butter unit JLR's profit.

The company had posted consolidated net profit of Rs 4,804.8 crore in the same quarter last fiscal. The company also said that it is cautiously optimistic about cash flow at JLR next year due to a massive capital expenditure of up to 3.8 billion pounds involving its China venture and other expansion in Britain, where the company is setting up a new engine facility, and in Brazil.
On a standalone basis, Tata Motors India reported a massive net loss of Rs 2,122.72 crore as against a profit of Rs 1,251.4 crore in the same period a year ago.
After many quarters of robust bottomline growth, its marquee British arm JLR too reported a marginal dip in net income at 593 million pounds from 619 million pounds.

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