New Delhi, June 30 -- JB Chemicals and Pharmaceuticals share price plunged by as much as 6.48 per cent to Rs.1,684.60 each on the NSE during early trading on Monday, June 30, after the announcement of a major deal in which Torrent Pharma will acquire the company.

The pharma stock opened at Rs.1,699 per share on Monday, as compared to previous close of Rs.1,801.40. JB Chemicals shares have given multibagger returns to its long-term investors by surging over 370 per cent in five years.

Torrent Pharmaceuticals announced on Sunday that it will acquire a majority stake in J B Chemicals and Pharmaceuticals through a Rs.19,500 crore deal, positioning it as the second most valuable pharmaceutical company in India.

As part of the transaction, T...