The social networking giant has been showing positive results since the beginning of 2017. Its shares have risen more than 50 per cent and reached two billion monthly users across the globe.
According to Forbes' real-time rankings of the world's billionaires, Amazon's Jeff Bezos overtook Bill Gates to become the richest person in the world.
Mr Bezos, who is also chairman and chief executive of the Seattle-based company, was worth almost $91 billion after Amazon's share price rose more than one per cent in morning trading in New York, the Independent reported.
That has put his fortune ahead of Microsoft co-founder Bill Gates's. The latter has a net worth of around $90.7 billion and has been at the top of Bloomberg's rich list since 2013.