The Sensex has slipped deeper into red and is now down 210 points at 14,087.
Hindalco is trading at Rs 123, down over 11%, on the back of ex-rights adjustment.
Reliance Infrastructure has plunged 3.3% to Rs 934, and Reliance has shed 2.7% at Rs 2,089.
Wipro, Larsen & Toubro and Reliance Communications have tumbled around 2.5% each to Rs 414, Rs 2,510 and Rs 387, respectively.
HDFC and DLF have slipped over 2% each to Rs 2,240 and Rs 468, respectively.
BHEL, HDFC Bank and ICICI Bank have declined nearly 2% each to Rs 1,649, Rs 1,210 and Rs 637, respectively.
Mahindra & Mahindra, Hindustan Unilever and TCS are down over 1% each at Rs 569, Rs 244 and Rs 810, respectively.
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Tata Motors and Bharti Airtel are up 1% each at Rs 427 and Rs 812, respectively.
Out of 2,647 stocks traded so far, 1,686 have declined, 862 have advanced and the rest are unchanged.