Bezos, the world's richest man, owns about 78.9 million shares of Amazon, according to a November 14 filing.
On Friday, Amazon founder Jeff Bezos became the only person with a $100bn (£75bn) fortune, seeing his wealth creep up by $2.4bn thanks to a 2% jump in Amazon's shares. In fact, the latter had amassed just over $90 billion back in July, temporarily wresting the mantle from the former Microsoft CEO and chairman before regaining it once again in the last few weeks.
Gates is the second wealthiest man, according to Bloomberg's Billionaire's Index, with a net worth estimated earlier this year of $88.9 billion. It also makes him the most recent person to rack up a 12-figure fortune since Bill Gates managed the milestone nearly two decades ago, in 1999.
It came as sales over the internet overall shot up by almost a fifth (18.4%) on the day - as shoppers snapped up bargains - compared to the same 24-hour period past year, figures show.
Bezos started 2017 as the fourth richest person in the world, and surpassed both Inditex (ZTSTF, +2.98%) founder Amancio Ortega and Berkshire Hathaway's Warren Buffet this year as well.More news: Mississippi State QB Nick Fitzgerald out after gruesome ankle injury
Bezos surpassed Gates in October as Amazon delivered better-than-expected quarterly profits on the back of its ultra-successful web services arm of the business. Bezos' climbing net worth is due in part to an exceptionally profitable year for Amazon, which saw the acquisition of Whole Foods.
Unlike Gates, Bezos has donated relatively little of his fortune to charity and other philanthropic causes.
Meanwhile, Bezos himself has shown interest in philanthropy.
But Mr Bezos has to date has not given away any of his wealth, but in June he tweeted that he wanted the help people with his fortune and was looking for ideas for how to share it.