The massive addition in the investors' wealth has been cornered by Daiichi Sankyo, which holds 63.92 per cent stake in the domestic drug major as on March 31, 2009.
Daiichi Sankyo's wealth swelled by a whopping Rs 1,229.60 crore (Rs 12.29 billion) in a single trading session.
Shares of Ranbaxy Lab settled higher by 20.73 per cent at Rs 266.70 on BSE. During the trade, the scrip had rallied 24 per cent to touch a high of Rs 273.35.
At the end of trade, Ranbaxy's market capitalization stood at Rs 11,211.26 crore (Rs 112.11 billion), an addition of Rs 1,923.66 crore (Rs 19.23 billion) over Rs 9,287.60 crore (Rs 92.87 billion) at the end of Friday's trade.
On the volume front, the scrip remained among the top traded counters with over 2.21 crore (22.1 million) shares changing hands.
Ranbaxy chief Malvinder Mohan Singh had on Sunday resigned as CMD, paving way for the appointment of Atul Sobti as the new chief executive officer and managing director for three years. Also Tsutomu Une, non-executive director, has been elected as chairman of the board of Ranbaxy.
The scrip has jumped two-fold from its 52-week low of Rs 133.15 witnessed on March 12, 2009.