Stock of the company tumbled 13.57 per cent to Rs 3,421.05 on the BSE.
On the NSE, it slumped 13.65 per cent to Rs 3,420.50.
Marketmen said that profit-booking pulled down the stock.
The board of directors of the software company had on September 12, declared an interim dividend of Rs 485 per equity share of Rs 5 each.
The record date for the purpose of the interim dividend declared by the company is fixed as September 25, 2014.
The issuing company fixes a particular date which is termed as record date when the investor must own shares in order to be eligible to participate in events like receiving dividend, bonus shares.
An ex-dividend is classification of trading shares when a declared dividend belongs to the seller rather than the buyer.