Jack Ma's office clarified that he remains 'very positive' about Alibaba and has no plans to sell his shares, despite a recent sell-off. Alibaba's shares fell nearly 10% in Hong Kong after the company decided not to fully spin off its cloud computing unit and reported 9% revenue growth. Ma, retired but still a major shareholder, has not sold any shares and believes the stock is undervalued. He is also focusing on education and innovation, taking up an honorary professorship at the University of Hong Kong.