Shares of Torrent Pharma, which accounts for 70 percent of these siblings' fortune, more than doubled, propelled by higher sales in the US and Europe. In May, younger sibling Samir became chairman of the pharma outfit though he stays on as vice chairman of Torrent Power. Sudhir is now chairman emeritus of Torrent Pharma but continues to be chairman of the power unit, whose shares have also surged due to rising tariffs. Three of their sons work in the power business.