Tata Motors Ltd
Analysts say such incidents can sap the confidence of investors at a time when the RBI has cautioned that further rate cuts are conditional on government action to control India's twin deficits.
"These incidents would affect sentiment of investors and government should therefore bring the physical settlement of derivatives to avoid such instances," said Kishor Ostwal, chairman and managing director, CNI Research.
0.57 percent, or 113.79 points, to end at 19,781.19. It lost 1.6 percent for the week.
The broader Nifty fell 0.59 percent, or 35.85 points, to end at 5,998.90, closing below the psychologically important 6,000 level, also ending 1.2 percent lower for the week.
The sudden fall in the share prices of these index stocks added to investor worries after Indian manufacturing slowed to a three-month low in January, and Bharti Airtel Ltd
Shares also fell on profit-taking after the BSE Sensex added 2.4 percent in January to post its third-straight monthly gain.
Tata Motors shares fell 5.49 percent after six separate block deals comprising 2.07 million shares took place at an average price of 274.92 rupees. The sales sent the auto maker's shares as low as 268.25 rupees.
UltraTech shares fell 3.4 percent after one block deal of 41,863 shares at an average price of 1,853.80 rupees. They dropped as low as 1,712.35 rupees.
Shares in Bharti Airtel, India's top telecoms carrier, fell 3 percent, after October-December profit missed estimates by a wide margin.
Bharat Heavy Electricals Ltd
Satyam Computer Services
Among the gainers, Maruti Suzuki India