The stock plunged 5.13 per cent to settle at Rs 474.75 on BSE. During the day, it slumped 5.63 per cent to Rs 472.20 -- its 52-week low.
The scrip was the worst hit among the BSE's 30-share index pack.
On NSE, it dipped 5.19 per cent to close at Rs 474.35.
The stock has slipped for the 6th straight trading session, down over 11 per cent wiping out Rs 14,373.78 crore from its market valuation.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)