Lenovo personal computer brand in China since 1997. In 2001, "Business Week" named him one of Asia's rising stars in business. Yang was president and CEO of Lenovo until 2004, when Lenovo closed its acquisition of IBM's PC division, after which Yang was succeeded as Lenovo CEO by IBM's Stephen M. Ward, Jr. Ward was succeeded by Bill Amelio on 20 December 2005. In February 2009, Yang replaced Amelio as CEO and has served in that capacity ever since. Yang was chairman of Lenovo's board from 2004 to 2008, and returned as chairman in 2012 alongside his role as CEO. In
Lenovo including its ThinkPad and ThinkCentre lines. As of January 2013, shipments of THINK-branded computers have doubled since Lenovo's takeover of the brand, with profit margins thought to be above 5%. Lenovo aggressively expanded the THINK brand away from traditional laptop computers in favor of tablets and hybrid devices such as the ThinkPad Tablet 2, ThinkPad Yoga, ThinkPad 8, ThinkPad Helix, and ThinkPad Twist; the shift came as a response to the growing popularity of mobile devices, and the release of Windows 8 in October 2012. Lenovo has achieved significant success with this high-value strategy and it now controls more than