Nadine Ahn appeared to be riding a wave of success earlier this year after a $15 billion mega-deal cemented her status as one of the most powerful women in banking. Weeks later she was sacked. Nadine Ahn appeared to be riding a wave of success earlier this year after a $15 billion mega-deal cemented her status as one of the most powerful women in banking. Weeks later she was sacked. Business / Banking & finance Sydney Morning Herald – Business