Larry Page using Android software and, by 2010, 17.2% of the handset market consisted of Android sales, overtaking Apple for the first time. Android became the world's most popular mobile operating system shortly afterward. Following a January 2011 announcement, Page officially became the chief executive of Google on April 4, 2011, while Schmidt stepped down to become executive chairman. By this time, Google had over $180 billion market capitalization and more than 24,000 employees. After Schmidt announced the end of his tenure as CEO on January 20, 2011, he jokingly tweeted on Twitter: "Adult-supervision no longer needed." Quartz organizational management reporter, Max
Executive compensation in the United States Former SEC Chairman, William H. Donaldson, called executive compensation "and how it is determined ... One of the great, as-yet-unsolved problems in the country today." One factor that does "not" explain CEO pay growth is CEO productivity growth if the productivity is measured by earnings performance. Measuring average pay of CEOs from 1980 to 2004, Vanguard mutual fund founder John Bogle found it grew almost three times as fast as the corporations the CEOs ran—8.5 percent/year compared to 2.9 percent/year. Whether CEO pay has followed the stock market more closely is disputed. One calculation by one executive compensation consultant (Michael