Newcomer to list gets bulk of fortune, which he shares with 2 brothers, from agrochemicals producer PI Industries, whose shares are up close to 40% in the past year, on strong revenues and profits. Started by his father, Pramod Singhal, as Mewar Oil & General Mills in India's lake city of Udaipur to produce edible oils, it now makes fertilizers and pesticides. He took charge in 1979 but has since handed over operations to son Mayank. Other interests include energy management firm Secure Meters.