Alibaba.com, the largest business-to-business portal in China underwent its first day of public share trading in Honk Kong, and the results exceeded all expectations, as the price tripled, raising $1.5 billion. The public offering is expected to raise nearly $2 billion in Hong Kong, making its debut offering as large as Google’s 2004 I.P.O. in the United States. ‘We are pleased to welcome investors from Hong Kong and around the world to join us in building a world-class e-commerce company,’ said Jack Ma, non-executive chairman of the company and chairman and chief executive officer of Alibaba Group…