https://phys.org/news/2018-07-apple-amazon-trillion.html

But Amazon is right behind: on Friday, its market cap reached $917 billion, before finishing at $882 billion, thanks to quarterly figures well received by investors.

Google's parent company Alphabet ($886 billion) and Microsoft ($827 billion) are also on track, while Facebook ($505 billion) is out of the race, having shed $119 billion in value after results released Thursday.