Valuation history

• $18.2B on February 1, 2017
• $17.9B on January 1, 2017
• $17.9B on December 1, 2016
• $17.6B on November 1, 2016
• $17.6B on October 1, 2016
• $17.6B on September 1, 2016
• $17.6B on August 1, 2016
• $17.6B on July 1, 2016
• $18B on May 26, 2016
• $16.8B on May 1, 2016
• $16B on March 3, 2016
• $16.8B on March 1, 2016
• $16.8B on February 1, 2016
• $16.8B on January 1, 2016
• $16.9B on December 1, 2015
• $16.9B on November 1, 2015
• $17.6B on October 1, 2015
• $17.7B on September 1, 2015
• $17.7B on August 1, 2015
• $17.6B on July 1, 2015
• $15B on May 29, 2015
• $15B on December 31, 2014