Preeti Singh Ashutosh Joshi And Alexander Sazonov Bloomberg

Uday Kotak built his Kotak Mahindra Bank Ltd. over decades to become Asia's richest banker. After India's regulator slapped his bank with a surprise ban, he's facing one of his biggest tests yet - and a dip in wealth.

Uday Kotak built his Kotak Mahindra Bank Ltd. over decades to become Asia's richest banker. After India's regulator slapped his bank with a surprise ban, he's facing one of his biggest tests yet - and a dip in wealth.