Urban Co. will begin trading in Mumbai on Wednesday after wrapping up India’s most oversubscribed major initial public offering this year. The rent-a-service firm could be poised for a strong start as its shares on the gray market were trading more than 60% above the high end of the price marketed during the IPO.  IPO bids exceed 100 times on offerInvestors flocked to the stock during the $215 million IPO, bidding more than 100 times the number of shares on sale, making it the most sought-after new listing ...