Dubai-headquartered Landmark Group, the Middle East retailing giant he founded and chairs, has latched onto e-tailing with landmarkshops.com. Landmark has close to 2,000 stores generating an estimated $6 billion in revenues annually, across the Middle East, Africa and India. SportsOne, the group's sporting goods chain, has been expanding rapidly. Jagtiani, whose wife Renuka helps him run the retailing empire, also has interests in hotels, fitness gyms and confectionery. Jagtiani disputes our net worth estimate.