Valuation history

• on August 25, 2017
• on February 26, 2017
• $13.8B on February 1, 2017
• $13.8B on January 1, 2017
• $13.8B on December 1, 2016
• $16.9B on October 12, 2016
• $13.8B on October 1, 2016
• $13.8B on September 1, 2016
• $13.8B on August 1, 2016
• $13.8B on July 1, 2016
• $13.3B on June 1, 2016
• $13.3B on May 1, 2016
• $16B on March 9, 2016
• $11.6B on August 1, 2015
• $10B on June 25, 2015
• $5B on December 16, 2014