Shares of ITC tanked 8.27 per cent to Rs 361.25 on the BSE. During the day, it plunged 11.12 per cent to Rs 350.
The heavyweight stock was the biggest loser among the 30-Sensex scrips.
Stocks of Godfrey Phillips India were down by 1.90 per cent, while VST Industries fell by 0.86 per cent on the BSE.
Finance Minister Arun Jaitley today came down heavily on smokers and tobacco consumers with a steep increase in excise duty.
He made changes to the compounded levy scheme applicable to pan masala, gutkha and certain other tobacco products.