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 comparisons" for CEO pay, for example comparing their executive against execs in much larger companies (used to get CBS CEO Leslie Moonves a $70 million package in 2011), against a different year when pay was higher (used to help PerkinElmer CEO Robert Friel in 2011), against executives in different industries where pay is higher (for example health-care executives rather than agribusiness executives for Hugh Grant of Monsanto), and changing back again when pay in that other industry went down (used to help Frederick Waddell of Northern Trust). According to Bloomberg Businessweek, four of five studies "by academic researchers have found