A former private banker at Citigroup Inc. has attracted almost $2 billion in assets for his new investment firm in India by tapping a growing wealth market that he thinks could be worth at least$10 trillion in a decade.Anirudha Taparia founded Nexedge Capital less than a year ago and has hired 60 bankers so far, with another 30 expected to join in the next few months. Taparia spent 13 years as joint chief executive officer at 360 One WAM Ltd., one of India’s largest wealth managers, and was previously a se ...