Jack Ma 55 Retired - Laying the foundation of his retirement on his 55th birthday, Jack Ma, a Chinese tech- mogul who co-founded the e-commerce retail company, Alibaba – which primarily was a B2B company but later on expanded into B2C and C2C service through many of its subsidiaries. It was recorded that Alibaba is China's largest integrated international online wholesale marketplace. It is ranked among the top 10 most valuable companies in the world by the Global 2000 list and enjoys the 9th highest global brand value.