Mumbai, Apr 07 (ANI): Mumbai Indians co-owner Nita Ambani rang the opening bell at the Bombay Stock Exchange (BSE) on Thursday along with team skipper Rohit Sharma and head coach Ricky Ponting. The Mumbai Indians will open their campaign against Rising Pune Supergiants at the Wankhede stadium on April 9 in the ninth edition of the Indian Premier League (IPL) tournament.