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
Helle Thorning-Schmidt Helle Thorning-Schmidt Helle Thorning-Schmidt (; born 14 December 1966) is a retired Danish politician who served as the 26th Prime Minister of Denmark from 2011 to 2015, and Leader of the Social Democrats from 2005 to 2015. She is the first woman to hold each post. Following defeat in 2015, she announced that she would step down as both Danish Prime Minister and Social Democratic party leader. Ending her political career in April 2016, she is the chief executive of the NGO, Save the Children. Thorning-Schmidt served as a Member of the European Parliament for Denmark from 1999 to 2004